Equals vs Threequals in JS
Knowing the lingo matters
Hoisting in JS
What is hoisting? Hoisting is a relatively new concept, which you will not find anything about in documentation prior to ES6. According to MDN:
Go, fetch()
Using Fetch in Javascript
Rails Generators
Amongst the things I found myself constantly referencing while building my first Rails app were Rails generators. You can check out the Rails Guides for more official documentation.