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Teacher, how do you implement the format of your lesson plan so that once you click on the title, the text will be displayed below, and then click to retract
Pure js implementation, you can use display=none/bloack to switch hiding or displaying, and use innerHTML to switch text display/hide
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Pure js implementation, you can use display=none/bloack to switch hiding or displaying, and use innerHTML to switch text display/hide