To declare an object where one of the keys is variable, you can do the following:
var obj={};
obj[variable]="foo";
Is they a more concise syntax ?
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3No, this is a good as it can get, unless you use a helper function. – Bergi May 09 '14 at 11:45
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Someone's gotta do it: `eval('var obj ={' + variable + ':"foo"}')`. Not posting it as an answer though… – RobG May 09 '14 at 12:00
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2@RobG I wouldn't call this more concise, just less readable... :) – Cedric Reichenbach May 09 '14 at 12:03