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27 lines
565 B
JavaScript
27 lines
565 B
JavaScript
/**
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* @file 担心会有些浏览器不支持，所以网上抄了一段
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* @author mdn
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*/
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if (!Element.prototype.matches) {
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Element.prototype.matches =
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Element.prototype.msMatchesSelector ||
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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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if (!document.documentElement.contains(el)) {
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return null;
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}
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do {
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if (el.matches(s)) {
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return el;
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}
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el = el.parentElement;
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} while (el !== null);
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return null;
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};
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}
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