File size: 1,119 Bytes
1e92f2d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | interface HProps {
index: number
id: string
}
export const H = ({ index, id, ...props }: HProps) => {
const getHighlightedWords = (): [
targetIndex: number[],
allHighlightWords: Element[],
] => {
const codeBlock = document.getElementById(id)
if (!codeBlock) return [[], []]
const allHighlightWords = codeBlock.querySelectorAll(
'.highlight-word'
) as unknown as Element[]
const targetIndex = [index - 1]
if (Math.max(...targetIndex) >= allHighlightWords.length) return [[], []]
else return [targetIndex, allHighlightWords]
}
const handleMouseEnter = () => {
const [targetIndex, allHighlightWords] = getHighlightedWords()
targetIndex.forEach(i => allHighlightWords[i].classList.add('on'))
}
const handleMouseLeave = () => {
const [targetIndex, allHighlightWords] = getHighlightedWords()
targetIndex.forEach(i => allHighlightWords[i].classList.remove('on'))
}
return (
<code
onMouseLeave={handleMouseLeave}
onMouseEnter={handleMouseEnter}
style={{
cursor: 'pointer',
}}
{...props}
/>
)
}
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