JavaScript String includes method | Search one string into another string

JavaScript String includes a method used to determines whether a searching string contains found within another string. It will return a true if the string contains the characters otherwise false.

Note: The JS includes() method is case sensitive

Syntax

string.includes(searchvalue, start)

Parameter Values

  • searchvalue: The string to search for.
  • start: At which position to start the search, optional and the default value is 0.

Return Value:

It will return true if string included else false indicating the absence.

Example of JavaScript String includes method

Let’ see an example of the string contains a character or not in JS using the includes() method.

Let’s see if a string includes “world”:

<!DOCTYPE html>
<html>
  <head>
    <script>

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

    </script>
  </head>   

</html>

Output:

JavaScript String includes method

Same example with starting the search at position 10:

It will return false because “world” word will not found after 10 portion.

<!DOCTYPE html>
<html>
  <head>
    <script>

    	var str = "Hello world, welcome to the EyeHunts.com";
	var n = str.includes("world", 10);
        alert(n)

    </script>
  </head>   

</html>

Output:

include Search one string into another string

Do comment about this tutorial. If any suggestions and example then do comment.

Note: The All JS Examples codes are tested on the Safari browser (Version 12.0.2) and Chrome.
OS: macOS 10.14 Mojave
Code: HTML 5 Version


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.