How to create an array of object literals in a loop?

I need to create an array of object literals like this:

var myColumnDefs = [
    {key:"label", sortable:true, resizeable:true},
    {key:"notes", sortable:true,resizeable:true},......

In a loop like this:

for (var i = 0; i < oFullResponse.results.length; i++) {
    console.log(oFullResponse.results[i].label);
}

The value of key should be results[i].label in each element of the array.