how to read the json values with jquery?

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my JSON response is like this { "items":[{"s": "2","f": "host","m": "hi..:)"}, ] }

I wrote the following code to read the JSON data. but not getting the any value. alert box also not working. If any one please inform me where I did mistake ...

$.ajax({

url: "ChatHandler.aspx?action=chatheartbeat",
cache: false,
dataType: "json",
success: function (data) {

$.each(data.items, function (i, item) {

if (item) { // fix strange ie bug

chatboxtitle = item.f;

alert(item.m);

}
});
});

Posted 4-Jan-13 1:19am

GopinathGuru

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Sergey Alexandrovich Kryukov · Accepted Answer · 2013-01-04T01:37:00

Alert might not work by one of the following reasons:

data.items is empty; then the function in the $.each loop is never called;
data is undefined; then the exception is thrown when you try to dereference it by getting data.items; so the rest of the script's call stack is skipped; note that unhandled exceptions are not shown;
the function in the loop is called but exception is thrown inside it.

To find out which case takes place you can use the step-by-step debugging or handle exceptions and provide test output.

—SA