Question

35

rated 0 times [ 37] [ 2] / answers: 1 / hits: 29879 / 11 Years ago, thu, january 30, 2014, 12:00:00

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;

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answered 11 Years ago alexandreah · Accepted Answer

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