why javascript contains property is not working in chrome browser?

Question

Why javascript contains property is not working in chrome browser? I have tried that Contains Property in javascript.It is working fine in Mozila Firefox Browser. But It is

Answer 1

Use your own contains method and override firefox's contains() method. Because this method is widely used I mean -> (indexof).

String.prototype.contains = function(str) { return this.indexOf(str) != -1; };