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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/tree_role/index.md
--- title: "ARIA: tree role" slug: Web/Accessibility/ARIA/Roles/tree_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#tree - https://www.w3.org/WAI/ARIA/apg/patterns/treeview/examples/treeview-navigation/ --- A `tree` is a widget that allows the user to select one or more items from a hierarchica...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/article_role/index.md
--- title: "ARIA: article role" slug: Web/Accessibility/ARIA/Roles/article_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#article - https://www.w3.org/WAI/ARIA/apg/patterns/feed/examples/feed/ --- The `article` role indicates a section of a page that could easily stand on its own on a page, in ...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/checkbox_role/index.md
--- title: "ARIA: checkbox role" slug: Web/Accessibility/ARIA/Roles/checkbox_role page-type: aria-role --- The `checkbox` role is for checkable interactive controls. Elements containing `role="checkbox"` must also include the [`aria-checked`](/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-checked) attribute to exp...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/definition_role/index.md
--- title: "ARIA: definition role" slug: Web/Accessibility/ARIA/Roles/definition_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#definition --- The `definition` ARIA role indicates the element is a definition of a term or concept. ## Description The `definition` ARIA role can be included on an eleme...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/radio_role/index.md
--- title: "ARIA: radio role" slug: Web/Accessibility/ARIA/Roles/radio_role page-type: aria-role --- The `radio` role is one of a group of checkable radio buttons, in a `radiogroup`, where no more than a single radio button can be checked at a time. ## Description A radio button is a checkable input that when associ...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/menu_role/index.md
--- title: "ARIA: menu role" slug: Web/Accessibility/ARIA/Roles/menu_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#menu - https://www.w3.org/WAI/ARIA/apg/patterns/menubar/examples/menubar-navigation/ --- The `menu` role is a type of composite widget that offers a list of choices to the user. ...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/landmark_role/index.md
--- title: "ARIA: landmark role" slug: Web/Accessibility/ARIA/Roles/landmark_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#landmark --- A landmark is an important subsection of a page. The `landmark` role is an abstract superclass for the aria role values for sections of content that are important e...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/menubar_role/index.md
--- title: "ARIA: menubar role" slug: Web/Accessibility/ARIA/Roles/menubar_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#menubar - https://www.w3.org/WAI/ARIA/apg/patterns/menubar/examples/menubar-navigation/ --- A `menubar` is a presentation of `menu` that usually remains visible and is usual...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/marquee_role/index.md
--- title: "ARIA: marquee role" slug: Web/Accessibility/ARIA/Roles/marquee_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#marquee --- A `marquee` is a type of [live region](/en-US/docs/Web/Accessibility/ARIA/ARIA_Live_Regions) containing non-essential information which changes frequently. ## Descrip...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/form_role/index.md
--- title: "ARIA: form role" slug: Web/Accessibility/ARIA/Roles/form_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#form - https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/form.html --- The `form` role can be used to identify a group of elements on a page that provide equivalent func...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/composite_role/index.md
--- title: "ARIA: composite role" slug: Web/Accessibility/ARIA/Roles/composite_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#composite --- The `composite` [abstract role](/en-US/docs/Web/Accessibility/ARIA/Roles#6._abstract_roles) indicates a widget that may contain navigable descendants or owned ch...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/heading_role/index.md
--- title: "ARIA: heading role" slug: Web/Accessibility/ARIA/Roles/heading_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#heading - https://www.w3.org/WAI/ARIA/apg/practices/structural-roles/#when_to_use_structural_roles --- The `heading` role defines this element as a heading to a page or sect...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/command_role/index.md
--- title: "ARIA: command role" slug: Web/Accessibility/ARIA/Roles/command_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#command --- The `command` role defines a widget that performs an action but does not receive input data. > **Note:** The `command` role is an abstract role. It is included here f...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/slider_role/index.md
--- title: "ARIA: slider role" slug: Web/Accessibility/ARIA/Roles/slider_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#slider --- The `slider` role defines an input where the user selects a value from within a given range. ## Description The `slider` role is for range input widgets where the user ...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/gridcell_role/index.md
--- title: "ARIA: gridcell role" slug: Web/Accessibility/ARIA/Roles/gridcell_role page-type: aria-role --- The [gridcell role](https://www.w3.org/TR/wai-aria-1.1/#gridcell) is used to make a cell in a [grid](/en-US/docs/Web/Accessibility/ARIA/Roles/grid_role) or [treegrid](/en-US/docs/Web/Accessibility/ARIA/Roles/tree...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/scrollbar_role/index.md
--- title: "ARIA: scrollbar role" slug: Web/Accessibility/ARIA/Roles/scrollbar_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#scrollbar --- A `scrollbar` is a graphical object that controls the scrolling of content within a viewing area. ## Description A `scrollbar` is a range that controls what pa...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/columnheader_role/index.md
--- title: "ARIA: columnheader role" slug: Web/Accessibility/ARIA/Roles/columnheader_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#columnheader - https://www.w3.org/WAI/ARIA/apg/patterns/table/examples/table/ --- The `columnheader` value of the ARIA role attribute identifies an element as bein...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/dialog_role/index.md
--- title: "ARIA: dialog role" slug: Web/Accessibility/ARIA/Roles/dialog_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#dialog - https://www.w3.org/WAI/ARIA/apg/patterns/dialog-modal/examples/dialog/ --- The `dialog` role is used to mark up an HTML based application dialog or window that separa...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/document_role/index.md
--- title: "ARIA: document role" slug: Web/Accessibility/ARIA/Roles/document_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#document --- The `document` role is for focusable content within complex composite [widgets](/en-US/docs/Web/Accessibility/ARIA/Roles/widget_role) or [applications](/en-US/docs/...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/tab_role/index.md
--- title: "ARIA: tab role" slug: Web/Accessibility/ARIA/Roles/tab_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#tab - https://www.w3.org/WAI/ARIA/apg/patterns/tabs/examples/tabs-manual/ --- The ARIA `tab` role indicates an interactive element inside a `tablist` that, when activated, displays ...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/region_role/index.md
--- title: "ARIA: region role" slug: Web/Accessibility/ARIA/Roles/region_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#region - https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/region.html --- The **`region`** role is used to identify document areas the author deems significant. It ...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/directory_role/index.md
--- title: "ARIA: directory role" slug: Web/Accessibility/ARIA/Roles/directory_role page-type: aria-role status: - deprecated spec-urls: https://w3c.github.io/aria/#directory --- The `directory` role was for a list of references to members of a group, such as a static table of contents. > **Warning:** The `director...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/rowgroup_role/index.md
--- title: "ARIA: rowgroup role" slug: Web/Accessibility/ARIA/Roles/rowgroup_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#rowgroup --- An element with `role="rowgroup"` is a group of [rows](/en-US/docs/Web/Accessibility/ARIA/Roles/row_role) within a tabular structure. A `rowgroup` contains one or m...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/banner_role/index.md
--- title: "ARIA: banner role" slug: Web/Accessibility/ARIA/Roles/banner_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#banner - https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/banner.html --- The `banner` role is for defining a global site header, which usually includes a logo, com...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/spinbutton_role/index.md
--- title: "ARIA: spinbutton role" slug: Web/Accessibility/ARIA/Roles/spinbutton_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#spinbutton --- The `spinbutton` role defines a type of range that expects the user to select a value from among discrete choices. ## Description The `spinbutton` role indi...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/listitem_role/index.md
--- title: "ARIA: listitem role" slug: Web/Accessibility/ARIA/Roles/listitem_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#listitem --- The ARIA `listitem` role can be used to identify an item inside a list of items. It is normally used in conjunction with the [`list`](/en-US/docs/Web/Accessibility/...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/switch_role/index.md
--- title: "ARIA: switch role" slug: Web/Accessibility/ARIA/Roles/switch_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#switch - https://w3c.github.io/html-aria/#index-aria-switch --- The ARIA **`switch`** role is functionally identical to the [checkbox](/en-US/docs/Web/Accessibility/ARIA/Roles...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/term_role/index.md
--- title: "ARIA: term role" slug: Web/Accessibility/ARIA/Roles/term_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#term --- The `term` role can be used for a word or phrase with an optional corresponding [`definition`](/en-US/docs/Web/Accessibility/ARIA/Roles/definition_role). ## Description The `...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/input_role/index.md
--- title: "ARIA: input role" slug: Web/Accessibility/ARIA/Roles/input_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#input --- The `input` abstract role is a generic type of widget that allows user input. > **Note:** The `input` role is an [abstract role](/en-US/docs/Web/Accessibility/ARIA/Roles#6....
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/select_role/index.md
--- title: "ARIA: select role" slug: Web/Accessibility/ARIA/Roles/select_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#select --- The **`select` role**, an abstract role, is superclass role for form widgets that allows the user to make selections from a set of choices. > **Note:** The `select` role...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/meter_role/index.md
--- title: "ARIA: meter role" slug: Web/Accessibility/ARIA/Roles/meter_role page-type: aria-role spec-urls: https://www.w3.org/TR/wai-aria-1.2/#meter --- The `meter` role is used to identify an element being used as a meter. > **Note:** Where possible, it is recommended that you use a native {{HTMLElement("meter")}} ...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/note_role/index.md
--- title: "ARIA: note role" slug: Web/Accessibility/ARIA/Roles/note_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#note --- A `note` role suggests a section whose content is parenthetic or ancillary to the main content. ## Description The `note` role can be added to parenthetic or ancillary conten...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/treeitem_role/index.md
--- title: "ARIA: treeitem role" slug: Web/Accessibility/ARIA/Roles/treeitem_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#treeitem - https://www.w3.org/WAI/ARIA/apg/patterns/treeview/examples/treeview-navigation/ --- A `treeitem` is an item in a `tree`. ## Description A [`tree`](/en-US/docs...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/menuitemcheckbox_role/index.md
--- title: "ARIA: menuitemcheckbox role" slug: Web/Accessibility/ARIA/Roles/menuitemcheckbox_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#menuitemcheckbox - https://www.w3.org/WAI/ARIA/apg/patterns/menubar/examples/menubar-navigation/ --- A `menuitemcheckbox` is a `menuitem` with a checkable ...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/img_role/index.md
--- title: "ARIA: img role" slug: Web/Accessibility/ARIA/Roles/img_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#img --- The ARIA `img` role can be used to identify multiple elements inside page content that should be considered as a single image. These elements could be images, code snippets, text,...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/navigation_role/index.md
--- title: "ARIA: navigation role" slug: Web/Accessibility/ARIA/Roles/navigation_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#navigation - https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/navigation.html --- The `navigation` role is used to identify major groups of links used for n...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/rowheader_role/index.md
--- title: "ARIA: rowheader role" slug: Web/Accessibility/ARIA/Roles/rowheader_role page-type: aria-role spec-urls: https://w3c.github.io/aria/#rowheader --- An element with `role="rowheader"` is a [cell](/en-US/docs/Web/Accessibility/ARIA/Roles/cell_role) containing header information for a [row](/en-US/docs/Web/Acce...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/table_role/index.md
--- title: "ARIA: table role" slug: Web/Accessibility/ARIA/Roles/table_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#table - https://www.w3.org/WAI/ARIA/apg/patterns/table/examples/table/ --- The `table` value of the ARIA `role` attribute identifies the element containing the role as having a ...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/complementary_role/index.md
--- title: "ARIA: complementary role" slug: Web/Accessibility/ARIA/Roles/complementary_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#complementary - https://www.w3.org/WAI/ARIA/apg/patterns/landmarks/examples/complementary.html --- The `complementary` [landmark role](/en-US/docs/Web/Accessibil...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/menuitemradio_role/index.md
--- title: "ARIA: menuitemradio role" slug: Web/Accessibility/ARIA/Roles/menuitemradio_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#menuitemradio - https://www.w3.org/WAI/ARIA/apg/patterns/menubar/examples/menubar-navigation/ --- A `menuitemradio` is checkable menuitem in a set of elements wi...
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data/mdn-content/files/en-us/web/accessibility/aria/roles
data/mdn-content/files/en-us/web/accessibility/aria/roles/menuitem_role/index.md
--- title: "ARIA: menuitem role" slug: Web/Accessibility/ARIA/Roles/menuitem_role page-type: aria-role spec-urls: - https://w3c.github.io/aria/#menuitem - https://www.w3.org/WAI/ARIA/apg/patterns/menubar/examples/menubar-navigation/ --- The `menuitem` role indicates the element is an option in a set of choices con...
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data/mdn-content/files/en-us/web/accessibility/aria
data/mdn-content/files/en-us/web/accessibility/aria/annotations/index.md
--- title: ARIA annotations slug: Web/Accessibility/ARIA/Annotations page-type: guide --- <section id="Quick_links"> <ol> <li><a href="/en-US/docs/Web/Accessibility/ARIA/Annotations">ARIA annotations</a></li> <li><a href="/en-US/docs/Web/Accessibility/ARIA/ARIA_Guides">ARIA guides</a></li> <li><a href="/...
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data/mdn-content/files/en-us/web/accessibility/aria
data/mdn-content/files/en-us/web/accessibility/aria/aria_techniques/index.md
--- title: "Using ARIA: Roles, states, and properties" slug: Web/Accessibility/ARIA/ARIA_Techniques page-type: guide --- <section id="Quick_links"> <ol> <li><a href="/en-US/docs/Web/Accessibility/ARIA/Annotations">ARIA annotations</a></li> <li><a href="/en-US/docs/Web/Accessibility/ARIA/ARIA_Guides">ARIA gui...
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data/mdn-content/files/en-us/web/accessibility/aria
data/mdn-content/files/en-us/web/accessibility/aria/aria_live_regions/index.md
--- title: ARIA live regions slug: Web/Accessibility/ARIA/ARIA_Live_Regions page-type: guide --- <section id="Quick_links"> <ol> <li><a href="/en-US/docs/Web/Accessibility/ARIA/Annotations">ARIA annotations</a></li> <li><a href="/en-US/docs/Web/Accessibility/ARIA/ARIA_Guides">ARIA guides</a></li> <li><a ...
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data/mdn-content/files/en-us/web/accessibility
data/mdn-content/files/en-us/web/accessibility/understanding_wcag/index.md
--- title: Understanding the Web Content Accessibility Guidelines slug: Web/Accessibility/Understanding_WCAG page-type: guide --- {{QuicklinksWithSubPages}} This set of articles provides quick explanations to help you understand the steps that need to be taken to conform to the recommendations outlined in the W3C Web...
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data/mdn-content/files/en-us/web/accessibility/understanding_wcag
data/mdn-content/files/en-us/web/accessibility/understanding_wcag/robust/index.md
--- title: Robust slug: Web/Accessibility/Understanding_WCAG/Robust page-type: guide --- {{QuicklinksWithSubPages("Web/Accessibility/Understanding_WCAG")}} This article provides practical advice on how to write your web content so that it conforms to the success criteria outlined in the **Robust** principle of the We...
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data/mdn-content/files/en-us/web/accessibility/understanding_wcag
data/mdn-content/files/en-us/web/accessibility/understanding_wcag/understandable/index.md
--- title: Understandable slug: Web/Accessibility/Understanding_WCAG/Understandable page-type: guide --- {{QuicklinksWithSubPages("Web/Accessibility/Understanding_WCAG")}} This article provides practical advice on how to write your web content so that it conforms to the success criteria outlined in the **Understandab...
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data/mdn-content/files/en-us/web/accessibility/understanding_wcag
data/mdn-content/files/en-us/web/accessibility/understanding_wcag/perceivable/index.md
--- title: Perceivable slug: Web/Accessibility/Understanding_WCAG/Perceivable page-type: guide --- {{QuicklinksWithSubPages("Web/Accessibility/Understanding_WCAG")}} This article provides practical advice on how to write your web content so that it conforms to the success criteria outlined in the **Perceivable** prin...
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data/mdn-content/files/en-us/web/accessibility/understanding_wcag/perceivable
data/mdn-content/files/en-us/web/accessibility/understanding_wcag/perceivable/color_contrast/index.md
--- title: Color contrast slug: Web/Accessibility/Understanding_WCAG/Perceivable/Color_contrast page-type: guide --- {{QuicklinksWithSubPages("Web/Accessibility/Understanding_WCAG")}} The [color contrast](https://www.w3.org/TR/WCAG21/#dfn-contrast-ratio) between background and foreground content (that is, usually tex...
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data/mdn-content/files/en-us/web/accessibility/understanding_wcag/perceivable
data/mdn-content/files/en-us/web/accessibility/understanding_wcag/perceivable/use_of_color/index.md
--- title: Use of color slug: Web/Accessibility/Understanding_WCAG/Perceivable/Use_of_color page-type: guide --- {{QuicklinksWithSubPages("Web/Accessibility/Understanding_WCAG")}} While [color contrast](/en-US/docs/Web/Accessibility/Understanding_WCAG/Perceivable/Color_contrast) is often primarily an aesthetic choice...
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data/mdn-content/files/en-us/web/accessibility/understanding_wcag
data/mdn-content/files/en-us/web/accessibility/understanding_wcag/keyboard/index.md
--- title: Keyboard slug: Web/Accessibility/Understanding_WCAG/Keyboard page-type: guide --- {{QuicklinksWithSubPages("Web/Accessibility/Understanding_WCAG")}} To be fully accessible, a web page must be operable by someone using only a keyboard to access and control it. This includes users of screen readers, but can ...
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data/mdn-content/files/en-us/web/accessibility/understanding_wcag
data/mdn-content/files/en-us/web/accessibility/understanding_wcag/operable/index.md
--- title: Operable slug: Web/Accessibility/Understanding_WCAG/Operable page-type: guide --- {{QuicklinksWithSubPages("Web/Accessibility/Understanding_WCAG")}} This article provides practical advice on how to write your web content so that it conforms to the success criteria outlined in the **Operable** principle of ...
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data/mdn-content/files/en-us/web/accessibility/understanding_wcag
data/mdn-content/files/en-us/web/accessibility/understanding_wcag/text_labels_and_names/index.md
--- title: Text labels and names slug: Web/Accessibility/Understanding_WCAG/Text_labels_and_names page-type: guide --- {{QuicklinksWithSubPages("Web/Accessibility/Understanding_WCAG")}} There are many situations in which a control, dialog, or other website feature should be given a descriptive name or label to allow ...
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data/mdn-content/files/en-us/web/accessibility
data/mdn-content/files/en-us/web/accessibility/mobile_accessibility_checklist/index.md
--- title: Mobile accessibility checklist slug: Web/Accessibility/Mobile_accessibility_checklist page-type: guide --- <section id="Quick_links"> {{ListSubpagesForSidebar("Web/Accessibility", 1)}} </section> This document provides a concise checklist of accessibility requirements for mobile app developers. It is int...
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data/mdn-content/files/en-us/web/accessibility
data/mdn-content/files/en-us/web/accessibility/keyboard-navigable_javascript_widgets/index.md
--- title: Keyboard-navigable JavaScript widgets slug: Web/Accessibility/Keyboard-navigable_JavaScript_widgets page-type: guide --- <section id="Quick_links"> {{ListSubpagesForSidebar("Web/Accessibility", 1)}} </section> Web applications often use JavaScript to mimic desktop widgets such as menus, tree views, rich ...
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data/mdn-content/files/en-us/web/accessibility
data/mdn-content/files/en-us/web/accessibility/understanding_colors_and_luminance/index.md
--- title: "Web Accessibility: Understanding Colors and Luminance" slug: Web/Accessibility/Understanding_Colors_and_Luminance page-type: guide --- <section id="Quick_links"> {{ListSubpagesForSidebar("Web/Accessibility", 1)}} </section> While understanding color, luminance, and saturation is important for design and...
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data/mdn-content/files/en-us/web/accessibility
data/mdn-content/files/en-us/web/accessibility/cognitive_accessibility/index.md
--- title: Cognitive accessibility slug: Web/Accessibility/Cognitive_accessibility page-type: guide --- <section id="Quick_links"> {{ListSubpagesForSidebar("Web/Accessibility", 1)}} </section> Cognitive accessibility covers accessibility considerations for people with cognition and learning disabilities. This docum...
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data/mdn-content/files/en-us/web/accessibility
data/mdn-content/files/en-us/web/accessibility/seizure_disorders/index.md
--- title: Web accessibility for seizures and physical reactions slug: Web/Accessibility/Seizure_disorders page-type: guide --- <section id="Quick_links"> {{ListSubpagesForSidebar("Web/Accessibility", 1)}} </section> This article introduces concepts behind making web content accessible for those with vestibular dis...
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data/mdn-content/files/en-us/web
data/mdn-content/files/en-us/web/webdriver/index.md
--- title: WebDriver slug: Web/WebDriver page-type: landing-page --- {{QuickLinksWithSubpages}} WebDriver is a remote control interface that enables introspection and control of user agents. It provides a platform- and language-neutral wire protocol as a way for out-of-process programs to remotely instruct the behavi...
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data/mdn-content/files/en-us/web/webdriver
data/mdn-content/files/en-us/web/webdriver/errors/index.md
--- title: WebDriver errors slug: Web/WebDriver/Errors page-type: landing-page --- {{QuickLinksWithSubpages}} Any WebDriver [command](/en-US/docs/Web/WebDriver/Commands) that is sent to might plausibly receive an error [response](/en-US/docs/Web/WebDriver/Response). An error is represented by an [HTTP response](/en-U...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/unknowncommand/index.md
--- title: Unknown command slug: Web/WebDriver/Errors/UnknownCommand page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **unknown command** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when the driver does not recognize the command/HTTP endp...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/javascripterror/index.md
--- title: JavaScript error slug: Web/WebDriver/Errors/JavaScriptError page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **JavaScript** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when a script the supplied by the user fails to execute. T...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/staleelementreference/index.md
--- title: Stale element reference slug: Web/WebDriver/Errors/StaleElementReference page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **stale element reference** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs because the referenced [web eleme...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/scripttimeout/index.md
--- title: Script timeout slug: Web/WebDriver/Errors/ScriptTimeout page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **script timeout** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when a script the user has provided did not complete before...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/invalidcookiedomain/index.md
--- title: Invalid cookie domain slug: Web/WebDriver/Errors/InvalidCookieDomain page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **invalid cookie domain** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when an illegal attempt was made to set...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/unknownmethod/index.md
--- title: Unknown method slug: Web/WebDriver/Errors/UnknownMethod page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **unknown method** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when the driver does not recognize the [HTTP request method...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/invalidselector/index.md
--- title: Invalid selector slug: Web/WebDriver/Errors/InvalidSelector page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **invalid selector** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when an element retrieval command is used with an unk...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/invalidsessionid/index.md
--- title: Invalid session ID slug: Web/WebDriver/Errors/InvalidSessionID page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **invalid session ID** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when the server does not recognize the unique se...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/invalidargument/index.md
--- title: Invalid argument slug: Web/WebDriver/Errors/InvalidArgument page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **invalid argument** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when the arguments passed to a [command](/en-US/docs/...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/unknownerror/index.md
--- title: Unknown error slug: Web/WebDriver/Errors/UnknownError page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **unknown element** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when an unspecified error occurs in the driver whilst proces...
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data/mdn-content/files/en-us/web/webdriver/errors
data/mdn-content/files/en-us/web/webdriver/errors/insecurecertificate/index.md
--- title: Insecure certificate slug: Web/WebDriver/Errors/InsecureCertificate page-type: webdriver-error --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Errors")}} The **insecure certificate** error is a [WebDriver error](/en-US/docs/Web/WebDriver/Errors) that occurs when the remotely controlled browser hits...
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data/mdn-content/files/en-us/web/webdriver
data/mdn-content/files/en-us/web/webdriver/commands/index.md
--- title: Commands slug: Web/WebDriver/Commands page-type: landing-page browser-compat: webdriver.commands --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver")}} The following is a list of the available WebDriver commands. {{SubpagesWithSummaries}} ## Browser compatibility {{Compat}}
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/setwindowrect/index.md
--- title: Set Window Rect slug: Web/WebDriver/Commands/SetWindowRect page-type: webdriver-command browser-compat: webdriver.commands.SetWindowRect --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/commands")}} The _Set Window Rect_ [command](/en-US/docs/Web/WebDriver/Commands) of the [WebDriver](/en-US/docs/We...
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/getelementproperty/index.md
--- title: Get Element Property slug: Web/WebDriver/Commands/GetElementProperty page-type: webdriver-command browser-compat: webdriver.commands.GetElementProperty --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Commands")}} The _Get Element Property_ [command](/en-US/docs/Web/WebDriver/Commands) of the [WebDr...
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/getwindowhandles/index.md
--- title: Get Window Handles slug: Web/WebDriver/Commands/GetWindowHandles page-type: webdriver-command browser-compat: webdriver.commands.GetWindowHandles --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Commands")}} The _Get Window Handles_ [command](/en-US/docs/Web/WebDriver/Command) of the [WebDriver](/en...
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/gettimeouts/index.md
--- title: Get Timeouts slug: Web/WebDriver/Commands/GetTimeouts page-type: webdriver-command browser-compat: webdriver.commands.GetTimeouts --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Commands")}} The _Get Timeouts_ [command](/en-US/docs/Web/WebDriver/Commands) of the [WebDriver](/en-US/docs/Web/WebDrive...
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/getelementattribute/index.md
--- title: Get Element Attribute slug: Web/WebDriver/Commands/GetElementAttribute page-type: webdriver-command browser-compat: webdriver.commands.GetElementAttribute --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Commands")}} The _Get Element Attribute_ [command](/en-US/docs/Web/WebDriver/Command) of the [We...
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/getelementtagname/index.md
--- title: Get Element Tag Name slug: Web/WebDriver/Commands/GetElementTagName page-type: webdriver-command browser-compat: webdriver.commands.GetElementTagName --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Commands")}} The _Get Element Tag Name_ [command](/en-US/docs/Web/WebDriver/Command) of the [WebDrive...
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/closewindow/index.md
--- title: Close Window slug: Web/WebDriver/Commands/CloseWindow page-type: webdriver-command browser-compat: webdriver.commands.CloseWindow --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Commands")}} The _Close Window_ [command](/en-US/docs/Web/WebDriver/Command) of the [WebDriver](/en-US/docs/Web/WebDriver...
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/new_window/index.md
--- title: New Window slug: Web/WebDriver/Commands/New_Window page-type: webdriver-command browser-compat: webdriver.commands.NewWindow --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Commands")}} The _New Window_ [command](/en-US/docs/Web/WebDriver/Commands) of the [WebDriver](/en-US/docs/Web/WebDriver) API ...
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/settimeouts/index.md
--- title: Set Timeouts slug: Web/WebDriver/Commands/SetTimeouts page-type: webdriver-command browser-compat: webdriver.commands.SetTimeouts --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Commands")}} The _Set Timeouts_ [command](/en-US/docs/Web/WebDriver/Commands) of the [WebDriver](/en-US/docs/Web/WebDrive...
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data/mdn-content/files/en-us/web/webdriver/commands
data/mdn-content/files/en-us/web/webdriver/commands/getwindowrect/index.md
--- title: Get Window Rect slug: Web/WebDriver/Commands/GetWindowRect page-type: webdriver-command browser-compat: webdriver.commands.GetWindowRect --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Commands")}} The _Get Window Rect_ [command](/en-US/docs/Web/WebDriver/Commands) of the [WebDriver](/en-US/docs/We...
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data/mdn-content/files/en-us/web/webdriver
data/mdn-content/files/en-us/web/webdriver/timeouts/index.md
--- title: Timeouts slug: Web/WebDriver/Timeouts page-type: guide --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver")}} Associated with a [WebDriver](/en-US/docs/Web/WebDriver) session are various timeout definitions that control behavior for [script injection](#script), [document navigation](#pageload), and [e...
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data/mdn-content/files/en-us/web/webdriver
data/mdn-content/files/en-us/web/webdriver/capabilities/index.md
--- title: Capabilities slug: Web/WebDriver/Capabilities page-type: landing-page --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver")}} WebDriver **_capabilities_** are used to communicate the features supported by a [session](/en-US/docs/Web/WebDriver). A client may also use capabilities to define which feature...
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data/mdn-content/files/en-us/web/webdriver/capabilities
data/mdn-content/files/en-us/web/webdriver/capabilities/firefoxoptions/index.md
--- title: firefoxOptions slug: Web/WebDriver/Capabilities/firefoxOptions page-type: webdriver-capability --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Capabilities")}} The **`moz:firefoxOptions` capability** is a namespaced set of capabilities specific to [Firefox](https://www.mozilla.org/en-US/firefox/). ...
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data/mdn-content/files/en-us/web/webdriver/capabilities
data/mdn-content/files/en-us/web/webdriver/capabilities/websocketurl/index.md
--- title: webSocketUrl slug: Web/WebDriver/Capabilities/webSocketUrl page-type: webdriver-capability --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Capabilities")}} With the `webSocketUrl` capability set to `true` a WebSocket server will be started in the browser, supporting bidirectional communication by u...
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data/mdn-content/files/en-us/web/webdriver/capabilities
data/mdn-content/files/en-us/web/webdriver/capabilities/acceptinsecurecerts/index.md
--- title: acceptInsecureCerts slug: Web/WebDriver/Capabilities/acceptInsecureCerts page-type: webdriver-capability --- {{QuickLinksWithSubpages("/en-US/docs/Web/WebDriver/Capabilities")}} The **`acceptInsecureCerts` capability** communicates whether expired or invalid [TLS certificates](/en-US/docs/Glossary/TLS) are...
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data/mdn-content/files/en-us/web
data/mdn-content/files/en-us/web/css/index.md
--- title: "CSS: Cascading Style Sheets" slug: Web/CSS page-type: landing-page --- {{CSSRef}} **Cascading Style Sheets** (**CSS**) is a [stylesheet](/en-US/docs/Web/API/StyleSheet) language used to describe the presentation of a document written in [HTML](/en-US/docs/Web/HTML) or [XML](/en-US/docs/Web/XML/XML_introdu...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/scrollbar-gutter/index.md
--- title: scrollbar-gutter slug: Web/CSS/scrollbar-gutter page-type: css-property browser-compat: css.properties.scrollbar-gutter --- {{CSSRef}} The **`scrollbar-gutter`** [CSS](/en-US/docs/Web/CSS) property allows authors to reserve space for the scrollbar, preventing unwanted layout changes as the content grows wh...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/offset-position/index.md
--- title: offset-position slug: Web/CSS/offset-position page-type: css-property browser-compat: css.properties.offset-position --- {{CSSRef}} The **`offset-position`** [CSS](/en-US/docs/Web/CSS) property defines the initial position of an element along a path. This property is typically used in combination with the ...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/rotate/index.md
--- title: rotate slug: Web/CSS/rotate page-type: css-property browser-compat: css.properties.rotate --- {{CSSRef}} The **`rotate`** [CSS](/en-US/docs/Web/CSS) property allows you to specify rotation transforms individually and independently of the {{CSSxRef("transform")}} property. This maps better to typical user i...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/hue-interpolation-method/index.md
--- title: <hue-interpolation-method> slug: Web/CSS/hue-interpolation-method page-type: css-type browser-compat: - css.types.color.color-mix - css.types.image.gradient.conic-gradient.hue_interpolation_method - css.types.image.gradient.linear-gradient.hue_interpolation_method - css.types.image.gradient.radial-gr...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/easing-function/index.md
--- title: <easing-function> slug: Web/CSS/easing-function page-type: css-type browser-compat: css.types.easing-function --- {{CSSRef}} The **`<easing-function>`** [CSS](/en-US/docs/Web/CSS) [data type](/en-US/docs/Web/CSS/CSS_Types) represents a mathematical function that describes the rate at which a value changes....
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/easing-function/cubic-bezier_out_of_range.svg
<svg xmlns="http://www.w3.org/2000/svg" width="480" height="265"><style>text{font:12px sans-serif}</style><path fill="#fff" d="M0 0h480v265H0z"/><marker id="dot" markerHeight="5" markerWidth="5" viewBox="-2.5 -2.5 5 5"><circle r="2" fill="#00f"/></marker><marker id="tick" stroke-linecap="square" markerHeight="10" marke...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/easing-function/step.svg
<svg xmlns="http://www.w3.org/2000/svg" width="480" height="250"><style>text{font:12px sans-serif}.caption{font-size:16px}</style><path fill="#fff" d="M0 0h480v250H0z"/><marker id="dot" markerHeight="5" markerWidth="5" viewBox="-2.5 -2.5 5 5"><circle r="2" fill="#00f"/></marker><marker id="dot-hollow" markerHeight="5" ...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/easing-function/jump.svg
<svg xmlns="http://www.w3.org/2000/svg" width="480" height="500"><style>text{font:12px sans-serif}.caption{font-size:16px}</style><path fill="#fff" d="M0 0h480v500H0z"/><marker id="dot" markerHeight="5" markerWidth="5" viewBox="-2.5 -2.5 5 5"><circle r="2" fill="#00f"/></marker><marker id="dot-hollow" markerHeight="5" ...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/easing-function/linear_function.svg
<svg xmlns="http://www.w3.org/2000/svg" width="480" height="250"><style>text{font:12px sans-serif}.caption{font-size:16px}</style><path fill="#fff" d="M0 0h480v250H0z"/><marker id="dot" markerHeight="5" markerWidth="5" viewBox="-2.5 -2.5 5 5"><circle r="2" fill="#00f"/></marker><marker id="tick" stroke-linecap="square"...
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data/mdn-content/files/en-us/web/css/easing-function/ease.svg
<svg xmlns="http://www.w3.org/2000/svg" width="480" height="500"><style>text{font:12px sans-serif}.caption{font-size:16px}</style><path fill="#fff" d="M0 0h480v500H0z"/><marker id="dot" markerHeight="5" markerWidth="5" viewBox="-2.5 -2.5 5 5"><circle r="2" fill="#00f"/></marker><marker id="tick" stroke-linecap="square"...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/easing-function/cubic-bezier.svg
<svg xmlns="http://www.w3.org/2000/svg" width="290" height="250" viewBox="-65 -195 290 250"><style>text{font:12px sans-serif}.sub{font-size:8px}</style><path fill="#fff" d="M-65-195h290V55H-65z"/><marker id="dot" markerHeight="5" markerWidth="5" viewBox="-2.5 -2.5 5 5"><circle r="2" fill="#00f"/></marker><marker id="do...
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data/mdn-content/files/en-us/web/css
data/mdn-content/files/en-us/web/css/easing-function/linear.svg
<svg xmlns="http://www.w3.org/2000/svg" width="240" height="250" viewBox="-65 -195 240 250"><style>text{font:12px sans-serif}</style><path fill="#fff" d="M-65-195h240V55H-65z"/><marker id="dot" markerHeight="5" markerWidth="5" viewBox="-2.5 -2.5 5 5"><circle r="2" fill="#00f"/></marker><marker id="tick" stroke-linecap=...
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