Difference between array and object in javascript? or Array Vs Object

Question

How to recognize array & object in js where typeof doesn’t come in handy?

 var arr = [], ob = {};

As everything in js are objects,

if(typeof arr == typeof ob)  => returns true

I want a operator or ... that will tell me that the variable is an array. I can then use only the arrayfunctions to objects which are array. How is that possible?

Answer 1

var arr = [], ob = {};

As everything in js are objects, even **Array is an Object but an instance of class Array

if(typeof arr == typeof ob)  => returns true as Both are **Objects

So, how will you to identify objects.

This is where instanceof operator comes in handy, to identify whether its an array you can put a additional check cde:

if(arr instanceof Object && arr instanceof Array) => returns true 
if(ob instanceof Object && ob instanceof Array) => returns false 

Answer 2

You could use Array.isArray() method to check if a variable is array or otherwise.

var myArray = [1,2,3,4,5];
console.log(Array.isArray(myArray));

true