Skip to content
ebookwale.
JavaScript · Refresher. The core that unlocks the rest

JavaScript in One Week

The whole language in a weekend of crash notes

🎁 New to JavaScript? Start free with the 3-day notes →
JavaScript in One Week sample page 1
JavaScript in One Week sample page 2
JavaScript in One Week sample page 3
JavaScript in One Week sample page 4
JavaScript in One Week sample page 5
JavaScript in One Week sample page 6

What's inside

  • Every JavaScript idea as a one line mental model with a runnable example
  • Hand drawn diagrams for the parts that trip people up
  • A gotcha on every page, the classic mistakes caught early
  • A tight cheat sheet you can keep open while you code

What's covered

  1. 0 · Orientation how JS runs
  2. 1 · Fundamentals types, operators, comparisons
  3. 2 · Control flow & functions Decide which code runs, and how many times it repeats.
  4. 3 · Scope, closures & this Where a name is visible. Inner code can see outward , never inward.
  5. 4 · Objects An object is a collection of key → value pairs, keys are strings (or symbols), values are anything.
  6. 5 · Data & collections One numeric type, every number is a 64-bit float (IEEE-754), so decimals are approximate, not exact.
  7. 6 · Prototypes & classes Every object has a hidden link to another object, its prototype . A missed property is looked up along that chain .
  8. 7 · Async promises & the event loop
  9. 8 · Errors & modules An error unwinds the stack , hunting upward for the nearest catch, if none, the program crashes.
  10. 9 · Sharp tools Power features you'll read more often than you write, recognise them in the wild.
  11. 10 · Cheat sheet & gotchas

JavaScript in One Week compresses the whole JavaScript language into a tight little booklet you can finish in a weekend. Every concept comes with one mental model, one runnable example, a picture when a picture helps, and the one gotcha that trips everyone up.

This book respects your time. No filler and no padding, just the parts that matter, in a handwritten style that is genuinely nice to read.

Preview a few pages below, then grab the PDF. It will be in your inbox in seconds.

Questions

Is JavaScript in One Week enough to learn JavaScript from scratch?

It is a fast crash course and refresher. If you have programmed before it gets you productive in days. Total beginners may prefer the One Month edition.

What format is the book?

A print ready PDF in the same handwritten Classic Ruled style. Read it on any device or print it.

Do I need an account to buy?

No. Buy with just your email and the download link arrives instantly. You can make an account later and grab it again anytime.

Can I get a refund?

Yes. See our refund policy, and if the book is not for you, just reach out.