• JavaScript at W3Schools
• Babel
• Coding "Snake" in 4 min 30 sec (plain browser JavaScript)
• "Please disable JavaScript to view this site."
• "I'm going to release a (roughly) weekly infographic about beginner concepts, with a focus on HTML, CSS, and JavaScript."

• jsfiddle — playground for JavaScript and CSS
  • example1
  • example2
• Plunker
  • example

hat tip

1- freecodecamp 2- Codewell 3- CSSBattle 4- Coderbyte 5- JavaScript30 6- Treehouse 7- Frontend Mentor