<script type="text/javascript">

        var myChart;

  myChart = echarts.init(document.getElementById('main'));

  var legendDate="";

var series="";

var ser="";

var legend="";

var option={};

 $.ajax({

      type: "post",

      async: false, //同步执行

      url: "task/result_charts",

      dataType: "json", //返回数据形式为json

      success: function (result) {

          legendDate = ["2014","2015","2016"];

          series =  [ { "name":"2014", "type":"bar", "data":[51, 2, 43],"len":"中国"} ,{ "name":"2015", "type":"bar", "data":[55, 36, 4] ,"len":"美国"},{ "name":"2016", "type":"bar", "data":[5, 20, 40],"len":"英国"}];

          legend = ["中国","美国","德国"];

             optionSeries();

             for(i=0;series.length>i;i++){

             option.series[i]=series[i];

             }

      },

      error: function (errorMsg) {

      }

  });

 function optionSeries(){

  option = {

    title: {

        text: '性能数据采集入库效率趋势图'

    },

    tooltip: {

        trigger: 'axis',

        axisPointer: {

            type: 'shadow'

        }

    },

    legend: {

        data: legendDate

    },

    grid: {

        left: '3%',

        right: '4%',

        bottom: '3%',

        containLabel: true

    },

    xAxis: {

        type: 'value',

        boundaryGap: [0, 0.01]

    },

    yAxis: {

        type: 'category',

        data: legend

    },

    series: [ ]

};

 }

 //通过Ajax获取数据

  myChart.setOption(option);

    </script>