河流图触发不了点击事件

描述:当前是关于Echarts图表中的 示例。
 
              		option = {

  		    tooltip: {
  		        trigger: 'item',
  		        axisPointer: {
  		            type: 'line',
  		            lineStyle: {
  		                color: 'rgba(0,0,0,0.2)',
  		                width: 1,
  		                type: 'solid'
  		            }
  		        }
  		    },

  		    legend: {
  		        data: ['DQ', 'TY', 'SS', 'QG', 'SY', 'DD']
  		    },

  		    singleAxis: {

  		        // top: '8%',

  		        axisTick: {},

  		        axisLabel: {},

  		        type: 'time',

  		        // position: 'top',

  		        splitLine: {
  		            show: true,
  		            lineStyle: {
  		                type: 'dashed',
  		                opacity: 0.2
  		            }
  		        }
  		    },

  		    series: [{
  		        type: 'themeRiver',
  		        itemStyle: {
  		            emphasis: {
  		                shadowBlur: 20,
  		                shadowColor: 'rgba(0, 0, 0, 0.8)'
  		            }
  		        },
  		        data: [
  		            ['2015/11/08', 10, 'DQ'],
  		            ['2015/11/09', 15, 'DQ'],
  		            ['2015/11/10', 35, 'DQ'],
  		            // ['2015/11/11',38,'DQ'],['2015/11/12',22,'DQ'],['2015/11/13',16,'DQ'],
  		            ['2015/11/14', 7, 'DQ'],
  		            ['2015/11/15', 2, 'DQ'],
  		            ['2015/11/16', 17, 'DQ'],
  		            ['2015/11/17', 33, 'DQ'],
  		            ['2015/11/18', 40, 'DQ'],
  		            ['2015/11/19', 32, 'DQ'],
  		            ['2015/11/20', 26, 'DQ'],
  		            ['2015/11/21', 35, 'DQ'],
  		            ['2015/11/22', 40, 'DQ'],
  		            ['2015/11/23', 32, 'DQ'],
  		            ['2015/11/24', 26, 'DQ'],
  		            ['2015/11/25', 22, 'DQ'],
  		            // ['2015/11/26',16,'DQ'],['2015/11/27',22,'DQ'],['2015/11/28',10,'DQ'],
  		            ['2015/11/08', 35, 'TY'],
  		            ['2015/11/09', 36, 'TY'],
  		            ['2015/11/10', 37, 'TY'],
  		            ['2015/11/11', 22, 'TY'],
  		            ['2015/11/12', 24, 'TY'],
  		            ['2015/11/13', 26, 'TY'],
  		            ['2015/11/14', 34, 'TY'],
  		            ['2015/11/15', 21, 'TY'],
  		            ['2015/11/16', 18, 'TY'],
  		            ['2015/11/17', 45, 'TY'],
  		            ['2015/11/18', 32, 'TY'],
  		            ['2015/11/19', 35, 'TY'],
  		            ['2015/11/20', 30, 'TY'],
  		            ['2015/11/21', 28, 'TY'],
  		            ['2015/11/22', 27, 'TY'],
  		            ['2015/11/23', 26, 'TY'],
  		            ['2015/11/24', 15, 'TY'],
  		            ['2015/11/25', 30, 'TY'],
  		            ['2015/11/26', 35, 'TY'],
  		            ['2015/11/27', 42, 'TY'],
  		            ['2015/11/28', 42, 'TY'],
  		            ['2015/11/08', 21, 'SS'],
  		            ['2015/11/09', 25, 'SS'],
  		            ['2015/11/10', 27, 'SS'],
  		            ['2015/11/11', 23, 'SS'],
  		            ['2015/11/12', 24, 'SS'],
  		            ['2015/11/13', 21, 'SS'],
  		            ['2015/11/14', 35, 'SS'],
  		            ['2015/11/15', 39, 'SS'],
  		            ['2015/11/16', 40, 'SS'],
  		            ['2015/11/17', 36, 'SS'],
  		            ['2015/11/18', 33, 'SS'],
  		            ['2015/11/19', 43, 'SS'],
  		            ['2015/11/20', 40, 'SS'],
  		            ['2015/11/21', 34, 'SS'],
  		            ['2015/11/22', 28, 'SS'],
  		            // ['2015/11/23',26,'SS'],['2015/11/24',37,'SS'],['2015/11/25',41,'SS'],
  		            // ['2015/11/26',46,'SS'],['2015/11/27',47,'SS'],['2015/11/28',41,'SS'],
  		            // ['2015/11/08',10,'QG'],['2015/11/09',15,'QG'],['2015/11/10',35,'QG'],
  		            // ['2015/11/11',38,'QG'],['2015/11/12',22,'QG'],['2015/11/13',16,'QG'],
  		            ['2015/11/14', 7, 'QG'],
  		            ['2015/11/15', 2, 'QG'],
  		            ['2015/11/16', 17, 'QG'],
  		            ['2015/11/17', 33, 'QG'],
  		            ['2015/11/18', 40, 'QG'],
  		            ['2015/11/19', 32, 'QG'],
  		            ['2015/11/20', 26, 'QG'],
  		            ['2015/11/21', 35, 'QG'],
  		            ['2015/11/22', 40, 'QG'],
  		            ['2015/11/23', 32, 'QG'],
  		            ['2015/11/24', 26, 'QG'],
  		            ['2015/11/25', 22, 'QG'],
  		            ['2015/11/26', 16, 'QG'],
  		            ['2015/11/27', 22, 'QG'],
  		            ['2015/11/28', 10, 'QG'],
  		            ['2015/11/08', 10, 'SY'],
  		            ['2015/11/09', 15, 'SY'],
  		            ['2015/11/10', 35, 'SY'],
  		            ['2015/11/11', 38, 'SY'],
  		            ['2015/11/12', 22, 'SY'],
  		            ['2015/11/13', 16, 'SY'],
  		            ['2015/11/14', 7, 'SY'],
  		            ['2015/11/15', 2, 'SY'],
  		            ['2015/11/16', 17, 'SY'],
  		            ['2015/11/17', 33, 'SY'],
  		            ['2015/11/18', 40, 'SY'],
  		            ['2015/11/19', 32, 'SY'],
  		            ['2015/11/20', 26, 'SY'],
  		            ['2015/11/21', 35, 'SY'],
  		            ['2015/11/22', 4, 'SY'],
  		            ['2015/11/23', 32, 'SY'],
  		            ['2015/11/24', 26, 'SY'],
  		            ['2015/11/25', 22, 'SY'],
  		            ['2015/11/26', 16, 'SY'],
  		            ['2015/11/27', 22, 'SY'],
  		            ['2015/11/28', 10, 'SY'],
  		            ['2015/11/08', 10, 'DD'],
  		            ['2015/11/09', 15, 'DD'],
  		            ['2015/11/10', 35, 'DD'],
  		            ['2015/11/11', 38, 'DD'],
  		            ['2015/11/12', 22, 'DD'],
  		            ['2015/11/13', 16, 'DD'],
  		            ['2015/11/14', 7, 'DD'],
  		            ['2015/11/15', 2, 'DD'],
  		            ['2015/11/16', 17, 'DD'],
  		            ['2015/11/17', 33, 'DD'],
  		            ['2015/11/18', 4, 'DD'],
  		            ['2015/11/19', 32, 'DD'],
  		            ['2015/11/20', 26, 'DD'],
  		            ['2015/11/21', 35, 'DD'],
  		            ['2015/11/22', 40, 'DD'],
  		            ['2015/11/23', 32, 'DD'],
  		            ['2015/11/24', 26, 'DD'],
  		            ['2015/11/25', 22, 'DD'],
  		            ['2015/11/26', 16, 'DD'],
  		            ['2015/11/27', 22, 'DD'],
  		            ['2015/11/28', 10, 'DD']
  		        ]
  		    }]
  		};
  		myChart.on('click',function(params){
  		    console.log(params);
  		    alert(1);
  		})