Setting an object value to another value in the same object

Question

I'd like to set one value in an object to another, like so:

var obj = { value1: 'test' value2: value1 }

Of course that doesn't work.
I feel like there would be an easier way than extending the object. Am I right?

Rajaprabhu Aravindasamy · Accepted Answer · 2014-02-14 08:16:46Z

1

Try,

var obj = { value1: 'test' }; obj.value2 = obj.value1;

answered Feb 14, 2014 at 8:16

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3 Comments

I think this is correct way to 'easier way than extending the object' what op wants.

If I'm not wrong, you were missing value2 in the obj :)

@Pavlo Yes, of course. but once the program's flow crosses the second line, the obj would contain a key called value2

Chris Li · Accepted Answer · 2014-02-14 08:29:38Z

Another way:

var value = 'test'; var obj = { value1: value, value2: value }

Be aware that because they point to String values, once value1 is changed, value2 will keep the old string instead of changing with value1.