I'm a new JS developer, thanks for sharing! 😁 More on reddit.com

Fun fact, the % operator is a remainder operator , not a modulo. More on reddit.com

I'm going to get this sucker printed and laminated, damn. More on reddit.com

This one is much better in my opinion because it actually defines and explains everything: https://learnxinyminutes.com/docs/javascript/ The one you linked to has all sorts of gaps: It uses both "let" and "var" without ever explaining the difference It shows == and === without ever explaining the difference It mixes in browser features like alert() and XMLHttpRequest, that are NOT part of the JavaScript language and don't work in, say, Node.js or other places that embed JS that aren't a web browser. It mixes in functions and arrow functions without explaining the difference It shows XHR and Fetch without explaining the difference It mixes in design patterns like factories, that are not part of the language at all I know it's a cheat sheet and not a tutorial - but it's just so inconsistent. Some sections it has lots of comments and defines things, others it just shows examples and leaves out such important details. The learnxinyminutes page, on the other hand, is so much more detailed and accurate, while still being quite concise. More on reddit.com