echarts 柱状图 如何添加点击事件

// option 是绑定的数据源
function refresh(isBtnRefresh) {

if (myChart && myChart.dispose) {
myChart.dispose();
}
myChart = echarts.init(domMain);
window.onresize = myChart.resize;
myChart.setOption(option, true);
var ecConfig = require('echarts/config');
function eConsole(param) {
switch (param.dataIndex) {
case 0:    //柱子1
window.location.href = "http://blog.sina.com.cn/eul";
break;
case 1:  //柱子2
window.location.href = "http://www.dacai.com/desc/4778";
break;
case 2:  //柱子3
window.location.href = "http://www.dacai.com/desc/4778";
break;
default:
break;

}

}

myChart.on("click", eConsole);
domMessage.innerHTML = '';
}