Convert string value into variable value - JavaScript

Question

I have a string variable: id = '1';
I want to make a variable that holds the value of data.img + id + .dispWidth without making it a string.

For example, if id = '7'; then dw = data.img7.dispWidth;
How can I do this?

Arun P Johny · Accepted Answer · 2015-07-07 05:16:58Z

3

Use bracket notation to use dynamic property keys

dw = data['img' + id].dispWidth;

answered Jul 7, 2015 at 5:16

Arun P Johny

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1 Comment

Thanks for the help. Worked like a charm.

Ivan Jovović · Accepted Answer · 2015-07-07 06:22:59Z

1

data['img' + id].dispWidth should do it. Although at that point you should probably consider whether you don't actually want an array.

Ivan Jovović

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answered Jul 7, 2015 at 5:18

pvg

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Thanks for the help. Worked like a charm.