JQuery implements text expansion and contraction special effect _ jquery

There is only one small area on the webpage, but the descriptive text is very long. The following script shows the long text. If you have similar requirements, refer to the following, I hope it will help you. There is only one small area on the webpage, but the descriptive text is very long. The script below implements the display of long text.
When you click expand, the text is expanded, and the text is shrunk.

Originally, you can write with the toggle () that comes with jQuery. However, when I do not work, toggle uses the click + flag to do this.