Question

I want to get the value of json array using .each

here’s where I set the values of array

$allRecords= array();
    while($row = mysql_fetch_array($result)){
        $oneRecord[] = array("orderNo"=>$row['order_no'],"orderDate"=>$row['order_date'],"orderTime"=>$row['order_Time']);
        array_push(&$allRecords,$oneRecord);
    }

    echo json_encode($allRecords);

and here’s what I make in jquery

$.post("controllers/OrderViewer.controller.php?action=viewOrders",param,function(result){
 // var data = JSON.parse(result); // I tried this but doesn't work
 // var data= eval(result);  // I tried this but doesn't work

    $.each(result,function(index,v){

            alert(index +" "+ v.orderNo);  // return undefined for values
            // what should I write here to reach array element

    });
    });

what should I write in .each to get array elements

here’s the response data structure

Array
(
[0] => Array
    (
        [orderNo] => 1
        [orderDate] => 2011-02-12
        [orderTime] => 00:00:10
    )

[1] => Array
    (
        [orderNo] => 2
        [orderDate] => 2011-02-12
        [orderTime] => 11:10:00
    )

)

Answer 1

If index and v are returning undefined values in your each() loop, then the value of result must not be what you think it is. The only way to make progress here is for you to see what result actually looks like.

Is it actually an array? If so, what are the items in the array? Are they what you expect? If it’s not an array, what is it?

The best way to see result is to set a breakpoint on the start of your each() loop and look at result in the debugger. Chrome and Safari come with built-in debuggers that take 15 mins to learn how to set a breakpoint and then inspect the values of variables once it hits that breakpiont. Firefox has a free add-on (Firebug) that gives it a debugger too. IE has tools you can download from MS with a debugger.