18 must-bookmark cheatsheets for webdevelopers

18 must-bookmark cheatsheets for webdevelopers: "A cheat sheet or crib sheet is a concise set of notes used for quick reference. Cheat sheets are so named because they may be used by students without the instructor’s knowledge to cheat on a test. Here is a collection of 18 cheat sheets , a must have collection for web developers.
1. CSS cheat [...]"