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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
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| const videos = new Map<HTMLVideoElement, DOMRect>(); | ||
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| function playOrPause(video: HTMLVideoElement) { | ||
| const { top, bottom } = video.getBoundingClientRect(); | ||
| if (bottom < 0 || top > window.innerHeight) { | ||
| video.pause(); | ||
| } else { | ||
| video.play(); | ||
| } | ||
| } | ||
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| const onscroll = (evt: Event) => { | ||
| for (const video of videos.keys()) { | ||
| playOrPause(video); | ||
| } | ||
| }; | ||
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| export default { | ||
| name: 'lazy', | ||
| option: { | ||
| mounted: (el: HTMLElement) => { | ||
| if (el instanceof HTMLVideoElement) { | ||
| videos.set(el, el.getBoundingClientRect()); | ||
| el.oncanplay = () => { | ||
| videos.set(el, el.getBoundingClientRect()); | ||
| playOrPause(el); | ||
| } | ||
| } | ||
| if (videos.size) { | ||
| !window.onscroll && (window.onscroll = onscroll); | ||
| } | ||
| }, | ||
| unmounted: (el: HTMLElement) => { | ||
| if (el instanceof HTMLVideoElement) { | ||
| videos.delete(el); | ||
| } | ||
| if (!videos.size) { | ||
| window.onscroll = null; | ||
| } | ||
| }, | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -9,6 +9,7 @@ | |
| "baseUrl": ".", | ||
| "paths": { | ||
| "@/*": ["./src/*"] | ||
| } | ||
| }, | ||
| "esModuleInterop": true, | ||
| } | ||
| } | ||