[removed] Equality Comparison between two Object/ Array

Question

Let us guess two objects with same property:

var x = {a : \'some\'},
      y = {a: \'some\'};

output:

x == y; and x

Answer 1

This happens because

var p = [1, 2, 3],
q = [1,2,3];

creates two instances of arrays. Equality operators in JS, when comparing non-primitive data, only check if they are the same instance, don't do deep check of values or properties.

With code

var p = q = [1, 2, 3];

you are creating ONE instance of the array and assign this instance to variables p and q. So, both variables store reference to the same instance, so equality operator will return true.