如何将Javascript变量分配给另一个变量的相同值

Question

How do you make a Javascript value have the same value as another variable. I have a variable called "buttonId", and another called "toWin", I want to make it so that buttonId's value doesn't change, but, toWin changes to have the same value as buttonId. something like:

toWin=buttonId;

Can anyone help me? No jQuery, please.

Answer 1

Just like you have it, but if you're declaring it for the first time, use the var keyword.

var toWin = buttonId;

If buttonId is an object, you may want to clone the object before setting toWin to the value of buttonId to avoid changing the value of the original object ( buttonId ) when and if you change toWin .

Answer 2

You forgot to mention var while declaring the second variable. you should do it like this:

var something = '1'; 
var anotherthing = something;

alert(anotherthing);

The output will be 1.

Answer 3

This works:

toWin=buttonId;

I was debugging my Javascript, and thought that this might be the problem, so I just checked on here if it works, but now I know that my problem is completely different.