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JavaScript String includes() Method

❮ JavaScript String Reference

Example

Check if a string includes "world":

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

More "Try it Yourself" examples below.


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.


Browser Support

Method
includes() 41 12.0 40 9 28

Syntax

string.includes(searchvalue, start)

Parameter Values

Parameter Description
searchvalue Required. The string to search for
start Optional. Default 0. At which position to start the search


Technical Details

Return Value: A Boolean. Returns true if the string contains the value, otherwise it returns false
JavaScript Version: ECMAScript 6

More Examples

Check if a string includes "world", starting the search at position 12:

var str = "Hello world, welcome to the universe.";
var n = str.includes("world", 12);
Try it Yourself »

❮ JavaScript String Reference