Why y equals 4 here instead of 3?

Question

var x = 1
y = ++x + x
alert(y)

I assume "++x" changed the value of x first and thus by adding it to x (which is 'itself') the equation becomes like "y = 2 + 2", am I correct?

Answer 1

Yes. Your reasoning is correct.

If you reverse the order then you will get 3.

y = x + ++x