How do i create properties of an object from values of other variables without using the eval() function?
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possible duplicate of Dynamically name a JSON propertyIgnacio Vazquez-Abrams– Ignacio Vazquez-Abrams2011-08-16 06:47:42 +00:00Commented Aug 16, 2011 at 6:47
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2I wouldn't agree that this is a duplicate; wildly different roots for this question, though they're ultimately the same solution. Leaving this Question means a bunch of people find it who might not find the other.coreyward– coreyward2011-08-16 06:50:05 +00:00Commented Aug 16, 2011 at 6:50
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7 Answers
With array notation:
obj[stringvar] = 1;
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var object = {}, stringvar = "name";
object[stringvar] = 1;
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You can use other variables as property names like this:
var a = 'property';
var b = {};
b[a] = 'hello';
This can also then be accessed in he following way:
b.property;
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Something like this with object literal notation:
var method = 'foo()';
// call it
myobject[method];
So you would do:
object[stringvar] = 1;
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Use the bracket notation:
var o = { key: 'value' };
var member = 'key';
o[member] = 'oherValue';
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var myobject = {};
var stringvar = "test";
myobject[stringvar] = 1;
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Javascript objects allow for on-demand properties creation. Just set the property you want:
var object = {name:'A', id:1};
object.description = "Test";
alert(object.description);
