Array.isArray()The Array.isArray() static method checks whether a value is an array.arraysArrayswidely2015-07-292018-01-29https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.isarrayhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/isArrayjavascript.builtins.Array.isArrayhttps://nowyoucanuse.com/features--array-isarray.html