assigning dynamic key name in javascript/jquery object

dynamic key name javascript object

here you can see the live demo and see code there also
live demo url:  http://jsbin.com/edibuk

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js"></script>

<script>
var curdoctypedata = {};

var map = {
  'key 1 from map': 'val1',
  'key 2 from map': 'val2'
};

//assign dynamic key
$.each(map, function(key, value) {
    curdoctypedata[key] = value ;
});

//display assigned dynamic key name
$.each(curdoctypedata, function(key, value) {
    alert ('key: ' + key + '|||' + 'value: ' +value);
});


</script>