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// https://github.com/angular/angular.js/blob/master/src/Angular.js#L72

function isArrayLike(obj) {
  if (!obj || (typeof obj.length !== 'number')) return false;

  // We have on object which has length property. Should we treat it as array?
  if (typeof obj.hasOwnProperty != 'function' &&
      typeof obj.constructor != 'function') {
    // This is here for IE8: it is a bogus object treat it as array;
    return true;

felixzapata

function ajax(url, opts){
  var xhr = new XMLHttpRequest();
 
  xhr.onreadystatechange = function(){
    var completed = 4;
    if(xhr.readyState === completed){
      if(xhr.status === 200){
        opts.success(xhr.responseText, xhr);
      }else{
        opts.error(xhr.responseText, xhr);

felixzapata

function esCif(c){
  var ultima,
      uletra = ["J", "A", "B", "C", "D", "E", "F", "G", "H", "I"],
      par = 0,
      non = 0,
      regular =/^[ABCDEFGHJKLMNPQRSUVW]\d\d\d\d\d\d\d[0-9,A-J]$/g,
      nn, parcial, control;
  c = c.toUpperCase();

  if (!regular.exec(c)) {return false; }

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function esNie(c){
    var aux = c.charAt(0);
    if(aux.toUpperCase()!=="X" && aux.toUpperCase()!=="Y"){ return false;}
    return comprobarNIE(c.substr(1,c.length), aux);
}
function comprobarNIE(c, letraInicio){
    if(!/^[0-9]{7}([A-Za-z]{1})$/.test(c)) return false;
    var letras = 'TRWAGMYFPDXBNJZSQVHLCKET',
        letraFin = c.substr(7,8).toUpperCase(),
        numero = c.substr(0,7);

felixzapata

function controlHeight(elems, num){
      var len = elems.length;
        if(len !== 0){
          for(var i = 0; i < len; i+=num) {
            var divs = elems.slice(i, i+num),
                height, numArray = [];
                for(var j = 0; j < num; j++){
                  numArray.push(divs.eq(j).height());
                }
            height = Math.max.apply(null, numArray);

felixzapata

function Stack(stackLimit)
  		{
				this.stack = new Array();
				this.stackLimit = stackLimit;
			}
			
			Stack.prototype.isEmpty = function()
			{
				return (this.stack.length == 0);
			}

felixzapata

// http://www.yeikos.com/2013/01/javascript-tips-cadena-aleatoria.html
Math.random().toString(36).substring(2); // 9xfq8ssn2hjjor

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// http://stackoverflow.com/questions/5016313/how-to-determine-if-a-number-is-odd-in-javascript

function oddOrEven(x) {
  return ( x & 1 ) ? "odd" : "even";
}

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// http://stackoverflow.com/questions/1232040/how-to-empty-an-array-in-javascript
// related: Splicing is the worst by far: http://jsperf.com/emptying-arrays/4
matrix.splice(0,matrix.length);

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var i, len = titles.length;
for(i = len-1; i >- 1; i--){
}