echarts对每个data[i]的图片添加点击事件

<script type="text/javascript">
window.onload=function(){
    //配置echarts的路径
    require.config({
        packages: [{
               name: ‘echarts‘,
               location: ‘echarts‘,
               main: ‘echarts‘
           }]
     });
    //样例数据，可以是后端传过来的json字符串
    var arr1 = new Array(100,130,76,150);    
    require([‘echarts‘,‘echarts/chart/pie‘],
        function drawPie(ec){
            myChart1 = ec.init(document.getElementById(‘myChart1‘)); 
            var option1 = {
                title : {
                     text: ‘上个月每周的学习时间分布‘,
                      //subtext: ‘饼图（Pie Chart）‘,
                      x:‘center‘
                },
                tooltip : {
                  trigger: ‘item‘,
                  //trigger: ‘axis‘,
                  formatter: "{a} <br/>{b} : {c} ({d}%)"
                },
                legend: {
                  orient : ‘vertical‘,
                  x : ‘left‘,
                  y : ‘center‘,
                  data:[‘第一周‘+arr1[0]+‘学时‘,
                        ‘第二周‘+arr1[1]+‘学时‘,
                        ‘第三周‘+arr1[2]+‘学时‘,
                        ‘第四周‘+arr1[3]+‘学时‘
                        ]
                },
                toolbox: {
                  show : true,
                  feature : {
                    //mark : {show: true},
                    dataView : {show: true, readOnly: false},
                    restore : {show: true},
                    saveAsImage : {show: true}
                  }
                }, 
                calculable : true,
                series : [
                  {
                      //name:‘饼图实例-------------------------------‘,-------------‘,
                    type:‘pie‘,
                    radius : ‘75%‘,
                    center: [‘50%‘, ‘60%‘],
                    data:[
                        {value:arr1[0], name:‘第一周‘+arr1[0]+‘学时‘},
                        {value:arr1[1], name:‘第二周‘+arr1[1]+‘学时‘},
                        {value:arr1[2], name:‘第三周‘+arr1[2]+‘学时‘},
                        {value:arr1[3], name:‘第四周‘+arr1[3]+‘学时‘}
                          ]
                  }
                ]
              };
            
            // 为echarts对象加载数据 
            myChart1.setOption(option1);
            //添加点击事件（单击），还有其他鼠标事件和键盘事件等等
            myChart1.on("click", function (param){               
                alert(param.dataIndex+‘:‘+option1.series[0].data[param.dataIndex].name);
            });
    });
    
}
</script>