JavaScript String includes() Method

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JavaScript String includes() Method

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Example

Check if a string includes "world":

var str = "Hello world, welcome to the universe.";

var n = str.includes("world");

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The result of n will be:

true

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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

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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);

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The result of n will be:

false

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Try it Yourself »

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