ant-design-vue/es/_util/dom-matches.js

An enterprise-class UI design language and Vue-based implementation

/**
 * source by `dom-matches`
 * https://github.com/necolas/dom-matches.git
 */

/**
 * Determine if a DOM element matches a CSS selector
 *
 * @param {Element} elem
 * @param {String} selector
 * @return {Boolean}
 * @api public
 */
export default function matches(elem, selector) {
  // Vendor-specific implementations of `Element.prototype.matches()`.
  var proto = window.Element.prototype;
  var nativeMatches = proto.matches || proto.mozMatchesSelector || proto.msMatchesSelector || proto.oMatchesSelector || proto.webkitMatchesSelector;

  if (!elem || elem.nodeType !== 1) {
    return false;
  }

  var parentElem = elem.parentNode; // use native 'matches'

  if (nativeMatches) {
    return nativeMatches.call(elem, selector);
  } // native support for `matches` is missing and a fallback is required


  var nodes = parentElem.querySelectorAll(selector);
  var len = nodes.length;

  for (var i = 0; i < len; i++) {
    if (nodes[i] === elem) {
      return true;
    }
  }

  return false;
}