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

Actually String.contains is not supported in Chrome as per the MDN

Here's the way to resolve the issue:

Polyfill

You can easily polyfill this method :

if (!('contains' in String.prototype)) String.prototype.contains = function (str, startIndex) {
    return -1 !== String.prototype.indexOf.call(this, str, startIndex);
};

var ClearFilterValue = 'family Schools';
if (ClearFilterValue.contains("family") == true) {
    alert('Success');
}

Demo: Fiddle