To run in the browser console

https://github.com/bgrins/devtools-snippets

http://bgrins.github.io/devtools-snippets/

https://www.telerik.com/blogs/6-snippets-to-keep-in-your-chrome-devtools

https://dev.to/viclafouch/improve-your-productivity-with-snippets-of-javascript-on-the-chrome-devtools-3gfm