JavaScript

• instanceOf ProgrammingLanguage

Strict equality and null !== undefined

console.log(null === undefined) // false (not the same type)
console.log(null == undefined) // true (but the "same value")
console.log(null === null) // true (both type and value are the same)

Resources

• https://stackoverflow.com/questions/73297947/how-to-type-an-object-with-optional-and-default-values
• https://stackoverflow.com/questions/5076944/what-is-the-difference-between-null-and-undefined-in-javascript

Learning Resources

• https://madza.hashnode.dev/21-github-repositories-to-become-a-javascript-master
• https://medium.com/@kubiak.maciej/3-tips-i-wish-someone-had-given-me-when-i-started-my-adventure-with-typescript-ddec0073862a
  • 1. Use the types property retrieving option
  • 2. Narrow down your argument types
  • 3. Use predefined types
• https://docs.microsoft.com/en-us/learn/certifications/exams/98-382
• https://hackr.io/blog/best-javascript-certification
• https://javascript.plainenglish.io/28-javascript-skills-a-qualified-intermediate-front-end-engineer-needs-to-master-ffed93de3f38

async

• https://medium.com/@ajmeyghani/async-javascript-a-pocket-reference-2bb16ac40d21

---

Children

1. Destructuring
2. Discriminated Union
3. Generator Function
4. JavaScript Testing
5. Operator
6. Symbol
7. global-object
8. javascript decorators
9. javascript reflection
10. metaprogramming in javascript
11. naming-convention

---

Backlinks

• JavaScript