Build your own rich text editor

1. https://blog.csdn.net/woshinia/article/details/19044521

2. https://blog.csdn.net/thx_bj/article/details/604743

3. Knowledge Point: https: //www.jb51.net/article/26460.htm

4. Reference: https: //jingyan.baidu.com/article/4b52d702c41681fc5c774b0e.html

5. easy to use online editor: https: //www.runoob.com/w3cnote/jsbin-guild-tutorial.html