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var Person = Class.create({
  initialize: function(name) {
    this.name = name;
  }
})

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Element.Methods.descendantOf = (function() {
  var doc = document.documentElement;
 
  // DOM Level 3 approach (Gecko, Opera)
  if ('compareDocumentPosition' in doc) {
    return function(element, ancestor) {
      return (element.compareDocumentPosition(ancestor) & 8) === 8
    };
  }
  // IE, Safari

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function cmpVersion(a,b) {
  var ai, bi;
  if (a.startsWith('.')) a = '0' + a;
  if (b.startsWith('.')) b = '0' + b;
  a = a.split('.');
  b = b.split('.');
  console.log(a,b)
  for (var i=0, l=Math.max(a.length, b.length); i<l; i++) {
    ai = typeof a[i] == 'undefined' ? 0 : parseInt(a[i]);
    bi = typeof b[i] == 'undefined' ? 0 : parseInt(b[i]);

kangax

(function() {
  
  var getText, setText;
  
  if ('innerText' in document.documentElement) {
    getText = function(element, shallow) {
      return (!shallow) ? $(element).innerText : getText(element);
    }
    setText = function(element, text) {
      (element = $(element)).innerText = text;

kangax

/*

var p = CObject.init().setLeft(100);

p.left; // undefined

p.getLeft(); 100

*/

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var serializeElements = (function(){
  
  function isSuccessful(element) {
    // http://www.w3.org/TR/html401/interact/forms.html#h-17.13.2
    return (
      !element.disabled && // should not be disabled
      element.name && // should have a name
      !'^file|reset$'.test(element.type) && // should not be of `file` or `reset` types
      Element.getValue(element) != null // should have a non-null value
    );

kangax

Class.Methods.createAccessors = function() {
  var accessors = $A(arguments), proto = this.prototype;
  if (!accessors.length) {
    accessors = Object.keys(proto).reject(function(prop) {
      return Object.isFunction(proto[prop]);
    });
  };
  accessors.each(function(prop){
    proto['get' + prop.capitalize()] = function(){ 
      return this[prop];

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;jQuery.fn.extend({
    // Andrea Giammarchi - Mit Style Licence - V0.2
    If: (jQuery.fn.ElseIf = function(fn){
        var __If__ = this.__If__ || this,
            $ = __If__.filter(fn);
        $.__If__ = __If__.filter(function(){return !~$.index(this)});
        return $;
    }),
    Else:function(){
        return this.__If__;

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var sourceIndex = (function(){
  var root = document.documentElement, 
      indexOf = Array.prototype.indexOf;
  if ('sourceIndex' in root) {
    if (root.sourceIndex === 0) { // Opera
      return function(e) {
        return e.sourceIndex + 1;
      }
    }
    else if (root.sourceIndex === 1) { // IE

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// Only one closure is created here - i.e. when one of these functions is returned from within anonymous-outer one. 
// That returned function will be part of the closure and have access to [[Scope]] of anonymous-outer one.  
// The returned function is the only Function object that's being created. 
// Function expressions from other blocks are never reached and so are never created 

var globalEval = (function(){
  if (window.eval) {
    return function(s){ window.eval(s) }
  }
  else if (window.execScript) {