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# JavaScript includes() Method [ JavaScript String Object](#) ## Example Find out if a string contains "Tutorial": var str = "Hello world, welcome to the Tutorial。"; var n = str.includes("Tutorial"); _n_ Output: true [Try it »](#) * * * ## Definition and Usage The includes() method is used to determine whether a string contains a specified substring. It returns true if a match is found, otherwise it returns false. **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. The position in the string to start the search from. Default is 0. | ## Return Value | Type | Description | | --- | --- | | Boolean | Returns true if a match is found, otherwise returns false. | ## Technical Details | JavaScript Version: | ECMAScript 6 | | --- | * * * ## More Examples ## Example Search for a string starting from index position 12: var str = "Hello world, welcome to the Tutorial."; var n = str.includes("world", 12); _n_ Output: false [Try it »](#) * * JavaScript String Object](#)