I have an object:
var obj = {fields : []};
And a variable:
var x = "property_name";
Now how do I use the value in the variable x as the property name for the object that I'm going to push inside the array?
I tried something like the one below, but it takes x literally and uses it as the property name. What I want to use is the value stored in the variable x. Is that possible?
obj.fields.push({x : 'im a value'});
You cannot use the object literal syntax for this purpose. However, you can create a new object and then use the [] syntax - remember, obj.xyz is equivalent to obj['xyz'] - but as you can see with the quotes in the latter, you can use an expression there - such as a variable:
var x = "property_name";
var obj = {};
obj[x] = 'value';
obj.fields.push(obj);
var x = 'property_name'; var obj = eval('({' + x + ': "value"})');. Agggh, the lights are fading...!