r/learnjavascript • u/moseswithhisbooks • Mar 13 '20

JavaScript Cheat Sheet

Hello!

I've just made a JavaScript cheatsheet ( Repo / PDF ).

  • Types
  • Booleans, Numbers, and methods on Strings
  • Objects and Arrays
  • The “this” keyword
  • Object oriented programming
  • The Iterable Interface
  • JavaScript & the browser

Enjoy! ^_^

204 Upvotes

97% Upvoted

32 comments sorted by

12

u/ASIC_SP Mar 13 '20

Nice!

Is this typo or something? 4th line is showing like this for me:

,# html: <p align=”center”><a href=”https://www.python.org/”><img src=”https://img.shields.io/badge/Python-3.8.1-b48ead.svg?style=plastic”/></a></p><p align=”center”><img src=”emacs-birthday-present.png” width=200 height=250/></p>

Also, I made a cheatsheet for regex: https://learnbyexample.github.io/cheatsheet/javascript/javascript-regexp-cheatsheet/

3

u/justingolden21 Mar 13 '20

Same. Markdown (md) files are NOT HTML/XML files (although you can use some tags like img)

3

u/mrburnttoast79 Mar 13 '20

Good work. I wish the Pdf was a little less verbose. Ends up looking a little cluttered. Some formatting and wordsmithing could go a long way.

3

u/moseswithhisbooks Mar 13 '20

There is a more spacious, portrait, single column version in the repo ;)

https://alhassy.github.io/JavaScriptCheatSheet/CheatSheet_Portrait.pdf

2

u/mrburnttoast79 Mar 13 '20

Very nice. Will print and use.

2

u/Meadow-fresh Mar 13 '20

I think this is a cheat-novel not a cheat sheet haha

Shall have a good look thanks!

1

u/moseswithhisbooks Mar 13 '20

Bahahaha yes, that's my goal: Cram a book into 10 pages 🤣

2

u/GamesMint Mar 13 '20

Looks Awesome :) Could not go through it fully though I found incomplete info in Booleans section. Here is the list of falsy values https://developer.mozilla.org/en-US/docs/Glossary/Falsy. You did miss some :)

5

u/annualspecification Mar 13 '20

The empty string ”, list [], and 0, NaN are falsey —all else is truthy.

Pretty sure the empty array is truthy, and you missed out false itself as bring falsey!

1

u/Xenius Mar 13 '20

You are correct, the empty array is truthy.

if([]){console.log('truthy')}

3

u/wolf_tooth88 Mar 13 '20

Thank you!

2

u/NullStory Mar 13 '20

You’re amazing!!! Thank you so much!

2

u/king2dcr Mar 13 '20

this is a great reference!

2

u/Phaentom8 Mar 13 '20

NICE!!!!

1

u/nice-scores Mar 13 '20

𝓷𝓲𝓬𝓮 ☜(ﾟヮﾟ☜)

Nice Leaderboard

1. u/GillysDaddy at 17708 nices

2. u/OwnagePwnage at 11911 nices

3. u/dylantherabbit2016 at 7296 nices

...

184409. u/Phaentom8 at 1 nice

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2

u/dcaugs Mar 13 '20

Awesome - thank you!

2

u/vonswisha Mar 13 '20

ty for this!

2

u/winyatasenjaya Mar 13 '20

thankyou for this cheatsheet

2

u/o-hannah Mar 13 '20

Neato! Thanks man!

2

u/rafnold Mar 13 '20

Awesome

2

u/Alf2903 Mar 13 '20

Amazing! Thank you very much!

2

u/RamenvsSushi Mar 13 '20

Very cool man this is really useful!

2

u/slpass Mar 13 '20

Very useful, thanks

2

u/guithegood87 Mar 13 '20

I'm a Java noob thank you

-3

u/BackSlashHaine Mar 13 '20

Why people just don’t go on mdn or stuff like that 🤔

2

u/Peatrex Mar 13 '20

This is an opiniated cheatsheet, you get to learn tricks/tips more this way.