Here you can find the source of contains(obj)
Array.prototype.contains = function(obj) { var i = this.length; while (i--) {/* w w w . j a va2 s . c o m*/ if (this[i] === obj) { return true; } } return false; };
Array.prototype.contains = function(o) { for (var i = 0; i < this.length; i++) { if (this[i] == o) { return true; return false;
Array.prototype.contains = function(o) { var flag = false; for (var i = 0; i < this.length; i++) { if (this[i] == o) { flag = true; break; return flag; ...
Array.prototype.contains = function (o, comparer) { comparer = comparer || EqualityComparer; var l = this.length; while (l-- > 0) if (comparer(this[l], o) === true) return true; return false; };
Array.prototype.contains = function(obj) for(i=0;i<this.length;i+=1) if(this[i] === obj) return true; return false;
Array.prototype.contains = function(obj) { var i = this.length; while (i--) if (this[i] === obj) return true; return false;
Array.prototype.contains = function(obj) { var i = this.length; while (i--) { if (this[i] == obj) { return true; return false;
'use strict'; Array.prototype.contains = function(obj) { var i = this.length; while (i--) { if (this[i] == obj) { return true; return false; ...
Array.prototype.contains = function(obj) { var i = this.length; while (i--) { if (this[i] === obj) { return true; return false;
Array.prototype.contains = function (obj) { return this.indexOf(obj) > -1; };