![]() ![]() (When those characteristics are undesirable, use typed arrays instead. 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. In JavaScript, arrays aren't primitives but are instead Array objects with the following core characteristics: JavaScript arrays are resizable and can contain a mix of different data types. The includes() method determines whether an array includes a certain element, returning true or false as appropriate. The includes() method determines whether an array includes a certain value among its entries, returning true or false as appropriate. The includes() is a built-in method of JavaScript that is used to discover whether an element is present in an array or not. Please do not add polyfills on reference articles. some (. ![]()
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