How to declare and assign values to key value pairs in an array

Question

I declared and and assigning values to an array in the following way but it says error at this line attributes.categoryKey: '2051' unexpected token '.'.Can someone help me.Thanks.

  var arr2 = [ {'attributes': {'categoryKey': '' },'value': '' } ]
         $.each(value, function (i, v) {
         arr2.push({ attributes.categoryKey: '2051', 'value': v.name });

Answer 1

You cannot do this directly

 arr2.push({ attributes.categoryKey: '2051', 'value': v.name }); 

as here attributes is not defined yet so .categoryKey is invalid hence you need to define its as further properties of object as you did initially

It needs to be as :

 var arr2 = [ {'attributes': {'categoryKey': '' },'value': '' } ]
 var value = [{name:"name1"}]       
 $.each(value, function (i, v) {
     arr2.push({ attributes: {categoryKey: '2051'}, 'value': v.name });
 })
 console.log(arr2);

See this fiddle https://jsfiddle.net/7ggcjjh7/

Answer 2

You used wrong syntax:

var object = {key: 'value'};

the key must be clearly and we cannot use some expression in it.

But I have a suggestion to by pass this:

var a = {'value': v.name };
a[attributes.categoryKey] = '2051';

Finally:

arr2.push(a);