Here you can find the source of contains(it)
String.prototype.contains = function(it) { return this.indexOf(it) !== -1; };
String.prototype.contains = function () { return String.prototype.indexOf.apply(this, arguments) !== -1; };
String.prototype.contains = function (a) { if (this.indexOf(a) > -1) return true; else return false; };
var string = "Hello world, my name is cole hudson. This is super cool."; String.prototype.contains = function(argument){ var parent = this.toLowerCase(); var argumentString = argument.toLowerCase(); return (parent.indexOf(argumentString) > -1); }; console.log(string.contains("World"));
String.prototype.contains = function(char) { return this.indexOf(char) != -1; };
String.prototype.contains = function(it) { return this.indexOf(it) != -1; }; function geturlform(addr){ if(addr.contains('http') || addr.contains('https')){ return "<a href='"+addr+"'>"+addr+"</a>"; }else{ return addr;
String.prototype.contains = function(it) { if (it instanceof Array) { for (var i in it) { if (this.indexOf(it[i]) != -1) return true; return false; else ...
function arrayIncludes(value, array) { return array.indexOf(value) > -1; String.prototype.contains = function(it) { return this.indexOf(it) != -1; };
String.prototype.contains = function(it) { return this.indexOf(it) != -1;
String.prototype.contains = function (it) { return this.indexOf(it) != -1; }; String.prototype.pick = function (min, max) { var n, chars = ''; if (typeof max === 'undefined') { n = min; } else { n = min + Math.floor(Math.random() * (max - min)); for (var i = 0; i < n; i++) { ...