Dynamic variables in JavaScript

Question

Can I attach this value to a TextField?

var data = "testVariable";
eval("var temp_" + data + "=123;");
alert(temp_testVariable);

Why not use the slightly more acceptable `window['temp_' + data] = '123';`? — josh.trow, Jun 14 '11 at 12:42
@josh.trow I'd say that that's a lot more than "slightly" more acceptable :-) — Pointy, Jun 14 '11 at 13:01
http://stackoverflow.com/questions/35221108/how-to-get-random-variables-value-in-javascript/35250618#35250618 — Niklesh Raut, Feb 07 '16 at 09:17

score 6 · Accepted Answer · answered Jun 14 '11 at 12:39

6

What is the use of Dyanmic variables? Any Scenarious

For when people haven't heard of objects or arrays.

Can i attach this value to a TextField?

Yes.

answered Jun 14 '11 at 12:39

Quentin

score 6 · Answer 2 · edited May 23 '17 at 11:52

6

The answer to 2) is 'yes you can'.

However for 1), and overall, you probably shouldn't be using eval: Why is using the JavaScript eval function a bad idea?

As another comment and the currently upvoted answer says - either use arrays or a map.

edited May 23 '17 at 11:52

Community

answered Jun 14 '11 at 12:41

Andras Zoltan

2 Answers2