My AreaChart gives me a Unable to get property 'bta' of undefined or null
reference
after it has 1) loaded a chart with no rows, 2) loaded a chart with some
rows, and 3) tries to load a chart with no rows again.
The chart-of-no-rows is pretty basic. As JSON:
{"cols": [{"label": "Email", "type": "string"},{"label": "Count", "type":
"number"}], "rows": [ ]}
which works the first time around. Any ideas what's causing this?
My AJAX javascript is also pretty straightforward so far as I know; it
works if there is always data. I just don't know why the AreaChart fails
the *second* time there's no rows
var jsonData = $.ajax({
// ... blah blah blah; the ajax call works
async: true,
failure: function () { isWaitingOnServer = false; },
success: function () {
data = new google.visualization.DataTable(jsonData.responseText);
chart.draw(data, options);
jsonData = null;
isWaitingOnServer = false;
}
});
Help?
-Ron
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