1. When making the funnel chart, I found that it was not displayed in reverse order but presented a strange arrangement, 
Sort:'descending' has been used in series, but it doesn't work! The data in the series is dynamically obtained from the background. 
#2. I found that when there was no data display, I found that some of the animations that should have been bubbling were indeed bubbling animations, and some were empty (I added a text explanation. ) 
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Provide an idea to solve the problem:
1. Copy the dynamically generated data and put it in the data of the echarts web page sample to see if it can be displayed correctly (only the data content is placed);
If it cannot be displayed correctly, Compare whether the series you wrote is the same as the official one;
2. If there is no data displayed yet, go to the document and search for the noDataLoadingOption
3. Read more documents, the echarts2.0 document is already very detailed