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

You must understand why contains is not working. Actually there are two methods contains and includes and both have different usage.

contains :

The contains() method returns a Boolean value indicating whether a node is a descendant of a specified node.

A descendant can be a child, grandchild, great-grandchild, and so on.

var span = document.getElementById("mySPAN");
var div = document.getElementById("myDIV").contains(span);

The result of div will be:

true

please find jsfiddle

includes :

Check if a string includes with "world":

var str = "Hello world, welcome to the universe.";
var n = str.includes("world");

The result of n will be:

true

Definition and Usage

The includes() method determines whether a string contains the characters of a specified string.

This method returns true if the string contains the characters, and false if not.

Note: The includes() method is case sensitive.

Please find jsfiddle

And finally ofcourse you can also use indexOf method to achive same output

var ClearFilterValue = 'family Schools';
alert(ClearFilterValue.indexOf("family") != -1);

Hope this make sense