Question

what is the reason of this error?

  <script type="text/javascript">
        dojo.xhrGet({
            url: "homeChart.php",
            handleAs: "json",
            load: function(json) {
                $m = [];
                for (var i = 1; i < 10; i++) {
                    $m.push(parseFloat(json[i]["valor" + i]));
                    alert(i);    
                }
                dojo.addOnLoad(makeCharts);
            }
        });
    </script>

the output of homeChart.php is exactly: [200]

thanks

Answer 1

json is [200], which has only one thing in it (200) at index 0.

The for loop uses indices 1 through 10 — those indices aren’t defined for this array.