es7 introduced one method to, which includes a.

For more details and discussion, see Specifications SpecificationĮCMAScript Latest Draft (ECMA-262) The definition of '' in that specification.ĮCMAScript 2016 (ECMA-262) The definition of '' in that specification. Creates a new array concatenating array with any additional arrays and/or values. ES7, also called ECMAScript2006 is the latest javascript language released in 2017. Please do not add polyfills on reference articles. The Array.isArray() method checks if a value is an array, it returns true if the value you are looking for is present, otherwise returns false. () is the method provided in javascript that helps us to determine whether any given array contains the specified value element considering all its entries and elements and this method returns a boolean value either true or false depending on the appropriate result and scenario. There are four ways that the includes () method can be used in JavaScript today: with arrays with strings with TypedArray s with IndexedDB We'll focus on the first two use-cases as those seem to be more common than the other two.

Javascript includes array