Tristan Yang
19 lines
555 B
JavaScript
19 lines
555 B
JavaScript
// scrollIntoViewIfNeeded
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const isSupported = "scrollIntoViewIfNeeded" in Element.prototype;
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if (!isSupported) {
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Element.prototype.scrollIntoViewIfNeeded = function (centerIfNeeded = true) {
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const el = this;
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new IntersectionObserver(function ([entry]) {
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const ratio = entry.intersectionRatio;
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if (ratio < 1) {
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let place = ratio <= 0 && centerIfNeeded ? "center" : "nearest";
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el.scrollIntoView({
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block: place,
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inline: place
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});
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}
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this.disconnect();
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}).observe(this);
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};
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}
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