20 lines
563 B
JavaScript
20 lines
563 B
JavaScript
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/**
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* Polyfills for DOM API's
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*/
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if (!Element.prototype.matches) {
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Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
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}
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if (!Element.prototype.closest) {
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Element.prototype.closest = function (s) {
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var el = this;
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var ancestor = this;
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if (!document.documentElement.contains(el)) return null;
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do {
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if (ancestor.matches(s)) return ancestor;
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ancestor = ancestor.parentElement;
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} while (ancestor !== null);
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return null;
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};
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}
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