Javascript multiple variables x = y = z?

Question

I stumbled upon some examples of code and what I doesn't know is this x = y = z;

What does this code do?

Is this some kind of validation in javascript?

possible duplicate of [Multiple variable assignments in one row](http://stackoverflow.com/questions/11514401/multiple-variable-assignments-in-one-row) — Qantas 94 Heavy, Oct 21 '14 at 09:22

score 3 · Accepted Answer · answered Oct 21 '14 at 08:58

3

It sets every variable to the value of the right-most expression. In this case, x and y will both get the value of z.

It's an easy way to instantiate multiple variables, for example

for (var i = j = 0; i < 10; i++)

will give you a loop with 2 counters initialised - one that auto increments, and one that you can manually handle inside the loop.

answered Oct 21 '14 at 08:58

Joe

I thought about it and the answer makes sense, but hey this is javascript nothing can suprise me, thanks for answer bro, cheers – Mahuna Oct 21 '14 at 08:59
Fantastic link! hahah – Mahuna Oct 21 '14 at 09:07

score 0 · Answer 2 · answered Oct 21 '14 at 08:59

0

No, it simply means "Set x and y to z".

answered Oct 21 '14 at 08:59

Madara's Ghost

score 0 · Answer 3 · answered Oct 21 '14 at 09:02

0

No nothing like validation its simply assign value of z to y and y to x. so result is value of x , y and z are same.

answered Oct 21 '14 at 09:02

Manan

3 Answers3