JavaScript Coding Questions

As a Front-End developer, JavaScript is the core skill of everything

Difficulty: medium

3. implement Array.prototype.flat()JavaScript medium
9. decode message JavaScript medium
10. first bad version JavaScript Algorithm medium
14. Implement a general memoization function - `memo()`JavaScript medium
16. create an Event Emitter JavaScript medium
57. create an Observable JavaScript medium
83. create an interval JavaScript medium
103. implement Math.sqrt()JavaScript Algorithm medium
113. Virtual DOM I JavaScript Algorithm DOM medium
125. implement classNames()JavaScript medium
161. toBe() or not.toBe()JavaScript medium