似乎您为 http://做对了www.jqplot.com/

您想要数据 [['Firefox'，183]，['Chrome'，28]，['IE'，2]，['Opera'，1]];

There You want Data [['Firefox', 183], ['Chrome', 28], ['IE', 2], ['Opera', 1]];

只需在您的js中将visitTime数据解析为int.
这是演示: http://jsfiddle.net/Simplybj/HCNL5/

Simply In your js parse the visitTime data to int.
Here is the Demo : http://jsfiddle.net/Simplybj/HCNL5/

var BrowserWiseVisit = [];
                        if (msg.d.length > 0) {
                            var arrVisit = [];
                            $.each(msg.d, function (index, item) {

                                arrVisit = [];
                                arrVisit.push(item.Browser);
                                arrVisit.push(parseInt(item.VisitTime));
                                BrowserWiseVisit.push(arrVisit);

                            });
                    }