JavaScript String includes() Method
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JavaScript String includes() Method
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Reference
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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
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
Try it Yourself »
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Reference
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