value instanceof Array
An array is an object. And like any object in JavaScript, the array instance has a constructor function — Array .
Why JavaScript array is object?
An object in JavaScript is similar in structure to the associative array/dictionary seen in most object oriented languages - i.e., it has a set of key-value pairs. An array can be considered to be an object with the following properties/keys: Length - This can be 0 or above (non-negative). The array indices.
Is array an object?
In the Java programming language, arrays are objects (§4.3. 1), are dynamically created, and may be assigned to variables of type Object (§4.3. 2). All methods of class Object may be invoked on an array.
