百度echarts显示loading效果

//定义myChart
myChart = echarts.init(document.getElementById(id));

//showLoading显示loading
myChart.showLoading({
   text: 'loading',
   color: '#36a8f1',
   textColor: '#36a8f1',
   maskColor: 'rgba(255, 255, 255, 0)',
   zlevel: 0
});

//hideLoading关闭loading
myChart.hideLoading();  //提示关闭