How to know that two javascript variable point to the same memory address

Question

Is there a way to know that 2 javascript variable point to the same memory address ?

var my_var = {     id: 1,     attribute: "myAttribute" }  var copy = my_var;  //someting like if(copy === my_var) return true; 

Answer 1

You can't alias variables like you can in C. In javascript, something like

var x = 1; var y = x y = 4; // x is still 1 

will always be the case.

However, objects are always passed by reference

var x = { one: 1, two: 2 }; var y = x; y.one = 100; // x.one is now 100