Javascript Playground

E-Commerce (Express JS)

Get Started

To run application: npm run dev

Troubleshoot

invalid value in custom validator - express-validator/express-validator#619

Movie Fight (Vanilla JS)

Get Started

Movie comparison using OMDb API To run application:

• Create env.js under current folder with below format:

  const OMDB_API_KEY = "YOUR_API_KEY";
  export default OMDB_API_KEY;

• Open application using browser

Message sharing (Vanilla JS)

Get Started

Base64 is used to do the "encryption". To run application, open in browser index.html
To deploy to server, run npx now
See deployed: https://message-sharing-4abdkmh7z-hualiang987-gmailcom.vercel.app/ (Powered by https://vercel.com/)

Testing framework (NodeJS - CLI)

Get Started

npm link
export FORCE_COLOR=true # To set up coloring (Git Bash on PC)
tme

Knowledge Concepts

Notorious This

• Did you define the function with an arrow function? - White console.log(this) on the first valid line about the arrow function. Value of this in the arrow function will be equal to that console log
• Did you call 'bind', 'call', 'apply' on the function when you invoked it? - 'this' is equal to the first argument of 'bind', 'call', 'apply'
• All other cases - 'this' is equal to whatever is to the left of the '.' in the method call