I've an array of Json objects

var persons= [ {name:'peter', age:33}, {name:'john', age:27}, ..... ];

I want to extend every item with a new property with the same value,
by example, active:true

[ {name:'peter', age:33, active:true}, {name:'john', age:27,
active:true}, ..... ]

Now, I do

persons=persons.collect(function(p) {
        return p;

I think it does't the best method. Is there other more efficient
method? (the array is about 1000 length)

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