Loop through and extract item values from JSON notation using Javascript -

i have following json:

{"items":  [   {"id":"5054","nodeid":"3286"},   {"id":"8888","nodeid":"7777"},   {"id":"3421","nodeid":"1234"},   {"id":"8748","nodeid":"2435"}  ] } 

when click button on page want run script retreives value of cookie stored json notation , loops through items within notation , compares id of button clicked ids stored in json. if id matches, nothing done. if not new item should added json object , saved cookie next time server loads page, different content displayed.

the addition of new item existing json notation easy bit , have code that. problem is, code looping through json notation doesn't seem working:

var cookietest = getcookie("wishlist"); /* json */      // check cookie exists     if (cookietest != null) {          var test = json.parse(cookietest)          (prop in test) {             console.log(prop);             console.log(prop[0].id);         }     } 

the first console.log seems return items when try , return id of first item in array, undefined returned.

what doing wrong here? appreciated.

you need first drill down "items" before can loop through array.

var cookietest = '{"items":[{"id":"5054","nodeid":"3286"},{"id":"8888","nodeid":"7777"},{"id":"3421","nodeid":"1234"},{"id":"8748","nodeid":"2435"}]}'; // check cookie exists     if (cookietest != null) {          var test = json.parse(cookietest)         var items = test.items ? test.items : [];         for(thing in items) {             var current = items[thing];             console.log(current.id);         }     } 

http://jsfiddle.net/6n8dr/