myChart.on('click', function (params) {
  // 点击事件
  console.log(params);
});

myChart.on('legendselectchanged', function (params) {
  //切换图例开关时触发
  console.log(params);
});

myChart.on('click', 'series.line', function (params) {
  console.log(params);
});

myChart.on('mouseover', {seriesIndex: 1, name: 'xx'}, function (params) {
  console.log(params);
});