wcfsetup/install/files/js/closest.js

   1 /*
   2  * Polyfill for `Element.prototype.matches()` and `Element.prototype.closest()`
   3  * Copyright (c) 2015 Jonathan Neal - https://github.com/jonathantneal/closest
   4  * License: CC0 1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/)
   5  */
   6 (function(ELEMENT) {
   7         ELEMENT.matches = ELEMENT.matches || ELEMENT.mozMatchesSelector || ELEMENT.msMatchesSelector || ELEMENT.oMatchesSelector || ELEMENT.webkitMatchesSelector;
   8
   9         ELEMENT.closest = ELEMENT.closest || function closest(selector) {
  10                         var element = this;
  11
  12                         while (element) {
  13                                 if (element.matches(selector)) {
  14                                         break;
  15                                 }
  16
  17                                 element = element.parentElement;
  18                         }
  19
  20                         return element;
  21                 };
  22 }(Element.prototype));