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String substring() Method with Example in JavaScript

JavaScript String substring() Method: Here, we are going to learn about the substring() method of the string in JavaScript with Example.
Submitted by Shivang Yadav, on February 23, 2020

JavaScript | String substring() Method

The String.substring() method in JavaScript is used to return a part of the string. The substring() extracted is from the given start and end index of the string.

Syntax

    string.substring(startIndex, endIndex);

Parameters

The method accepts two parameters, they are the starting and ending index of the substring string which is to be extracted.

Return Value

The return type of this method is string which is the substring output of the given string.

Browser support:

Chrome, Internet explorer, Mozilla, Safari, Opera mini.

Example 1

<script>
	document.write("Hello".substring(1,3) + "<br/>");
	document.write("Hello".substring(0,2) + "<br/>");
	document.write("Hello".substring(0,5) + "<br/>");
	document.write("Hello".substring(0,8) + "<br/>"); //no error
	document.write("Hello World!".substring(6,12) + "<br/>");
</script>

Output

el
He
Hello
Hello
World!

Example 2

<script>
	str = "www.includehelp.com";

	document.write(str.substring(0,3) + "<br/>");
	document.write(str.substring(4,15) + "<br/>");
	document.write(str.substring(16,19) + "<br/>");
	document.write(str.substring(0) + "<br/>");
	document.write(str.substring(4) + "<br/>");
	document.write(str.substring(16) + "<br/>");
</script>

Output

www
includehelp
com
www.includehelp.com
includehelp.com
com

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