Array key type
by rmadhuram
HTML
<div id="result"></div>
CSS
#result {
font-family: 'helvetica';
font-size: 12px;
}
JavaScript
var x = {"i": 1},
y = {"j": 2};
var arr = {};
arr[x] = "hello";
arr[y] = "world";
$("#result").html(JSON.stringify(arr));