21 lines
789 B
JavaScript
21 lines
789 B
JavaScript
Element.prototype.closest = Element.prototype.closest ||
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function closest(selector, selectedElement = this) {
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if (!selectedElement) return null;
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return selectedElement.matches(selector) ?
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selectedElement :
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Element.prototype.closest(selector, selectedElement.parentElement);
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};
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Element.prototype.matches = Element.prototype.matches ||
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Element.prototype.matchesSelector ||
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Element.prototype.mozMatchesSelector ||
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Element.prototype.msMatchesSelector ||
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Element.prototype.oMatchesSelector ||
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Element.prototype.webkitMatchesSelector ||
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function matches(selector) {
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const elms = (this.document || this.ownerDocument).querySelectorAll(selector);
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let i = elms.length - 1;
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while (i >= 0 && elms.item(i) !== this) { i -= 1; }
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return i > -1;
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};
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