25 lines
919 B
TypeScript
25 lines
919 B
TypeScript
function toggleCallout(this: HTMLElement) {
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const outerBlock = this.parentElement!
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this.classList.toggle(`is-collapsed`)
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const collapsed = this.classList.contains(`is-collapsed`)
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const height = collapsed ? this.scrollHeight : outerBlock.scrollHeight
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outerBlock.style.maxHeight = height + `px`
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}
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function setupCallout(div: HTMLElement) {
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const collapsed = div.classList.contains(`is-collapsed`)
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const title = div.firstElementChild!
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const height = collapsed ? title.scrollHeight : div.scrollHeight
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div.style.maxHeight = height + `px`
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}
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document.addEventListener(`nav`, () => {
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const collapsible = document.getElementsByClassName(`callout is-collapsible`) as HTMLCollectionOf<HTMLElement>
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for (const div of collapsible) {
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const title = div.firstElementChild
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setupCallout(div)
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title?.removeEventListener(`click`, toggleCallout)
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title?.addEventListener(`click`, toggleCallout)
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}
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})
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