Adding dynamic variables in object keys

Question

Is something like this allowed in Javascript:

var object = {
    'key1' + var1 : 'value',
    'key2' + var1 : 'value'
};

I'd liked to concat the var1 variable with the key but I'm getting a syntax error. Here's the full error:

Uncaught SyntaxError: Unexpected token +

When you are not sure if its ok or not, try it in the developer console. — phylax
– phylax, Commented Apr 17, 2014 at 16:20
@phylax Probably OP has tried, syntax errors don't occur without doing something wrong ; ). — Teemu
– Teemu, Commented Apr 17, 2014 at 16:22
This is relatively often asked question, just pick your dup... — Teemu
– Teemu, Commented Apr 17, 2014 at 16:27

Amit Joki · Accepted Answer · 2014-04-17 16:20:49Z

2

No, obviously(You are getting an error),

But you can do this:

var obj = {};
obj["key1" + var1] = 'value';

It's using bracket notation to set the dynamic so called key

answered Apr 17, 2014 at 16:20

Amit Joki

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