JS Objects Object Definitions Object Properties Object Methods Object Display Object Accessors Object Constructors Object Prototypes Object Iterables Object Sets Object Maps Object Reference However, you can easily polyfill this method: if (! Tutorial JS HOME JS Introduction JS Where To JS Output JS Statements JS Syntax JS Comments JS Variables JS Let JS Const JS Operators JS Arithmetic JS Assignment JS Data Types JS Functions JS Objects JS Events JS Strings JS String Methods JS String Search JS String Templates JS Numbers JS BigInt JS Number Methods JS Number Properties JS Arrays JS Array Methods JS Array Sort JS Array Iteration JS Array Const JS Dates JS Date Formats JS Date Get Methods JS Date Set Methods JS Math JS Random JS Booleans JS Comparisons JS If Else JS Switch JS Loop For JS Loop For In JS Loop For Of JS Loop While JS Break JS Iterables JS Sets JS Maps JS Typeof JS Type Conversion JS Bitwise JS RegExp JS Precedence JS Errors JS Scope JS Hoisting JS Strict Mode JS this Keyword JS Arrow Function JS Classes JS Modules JS JSON JS Debugging JS Style Guide JS Best Practices JS Mistakes JS Performance JS Reserved Words This method has been added to the ECMAScript 2015 specification and may not be available in all JavaScript implementations yet. For example, the following expression returns false: 'Blue Whale'.includes('blue') // returns false This method lets you determine whether or not a string includes another string.

True if the search string is found anywhere within the given string otherwise, false if not. position Optional The position within the string at which to begin searching for searchString. Syntax str.includes( searchString) Parameters searchString A string to be searched for within str. If you'd like to contribute to the interactive examples project, please clone and send us a pull request.

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Javascript includes string