Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

by tdecs August 05, 2012

JavaScript

var Utils = {
  contains: function (el1, el2) {
    return (el1 === window && (el2 && (el2 === window || el2.nodeType))) || ((el1 && el1.nodeType) && (el2 && el2.nodeType)) ? (el1.contains ? el1.contains(el2) : true) : false;
  }
};

Utils.contains(window, null); // false
Utils.contains({}, {}); // false
Utils.contains([]+[], {}+{}); // false
Utils.contains(window, 0|0); // false

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