jquery - loop through json string via java script -

i have retrieved data database , parsed javascript

var categories = <?php echo json_encode($categories); ?>;

in source code categories variable has following values:

var categories = [{"id":"27","name":"john"},{"id":"8","name":"jack"}]

now i'm trying loop through array this

$(document).ready(function(){ //alert(categories); cats = jquery.parsejson(categories);  (x in cats) {     alert(cats.name); } }

but i'm getting nothing. problem?

try this.

$(document).ready(function(){     (x in categories)     {         alert(categories[x].name);     } }

Sohocode