请看这个例子:JsFiddle问题:我有以下JSON数组y=[{"LngTrend":15,"DblValue":10,"DtmStamp":1358226000000},{"LngTrend":16,"DblValue":92,"DtmStamp":1358226000000},{"LngTrend":17,"DblValue":45,"DtmStamp":1358226000000},{"LngTrend":18,"DblValue":87,"DtmStamp":1358226000000},{"LngTrend":15,"DblValue":10,"DtmStamp":13582