Create Javascript Variable with name of a variable and string combined

Question

I cant seem to solve this problem, heres what I have...

vid1=0;
vid2=0;
vid3=0;

num=1;

'vid'+num = 1;
// vid1=1;

I want to create the variable based on the number, so if the number is 2, then make a variable by the name of vid2 and set it equal to 1.

PS: This is my first time on stackoverflow, so sorry if I made any mistakes in terms of tradition on this website =) And thannks in advanced.

possible duplicate of [Javascript - variable value is name of another variable](http://stackoverflow.com/questions/14405252/javascript-variable-value-is-name-of-another-variable) — epascarello, Jan 21 '13 at 01:50
possible duplicate of [Javascript Variable Variables](http://stackoverflow.com/questions/592862/javascript-variable-variables) — Felix Kling, Jan 21 '13 at 01:55

score 5 · Accepted Answer · answered Jan 21 '13 at 01:44

5

If you're in the global namespace, use this:

window['vid' + num] = 1;

but this is a really good use case for an array:

var numbers = [0, 0, 0];
var num = 1;

numbers[num] = 1;

answered Jan 21 '13 at 01:44

Joseph Silber

For more details : http://stackoverflow.com/questions/4862193/javascript-global-variables – Libert Piou Piou Jan 21 '13 at 01:49
And where is the `eval` option? – RobG Jan 21 '13 at 02:50
@RobG - I don't go down the sewer drain without full body anti-toxic protective clothing. You get me that, and I'll get you `eval`. – Joseph Silber Jan 21 '13 at 02:52
I just think that for the sake of completeness, it should be mentioned (and warned against of course). – RobG Jan 22 '13 at 08:58

1 Answers1