JavaScript topics to cover before interview

JavaScript Basic:

• Primitive Types, and Reference Types
• Call stack
• JavaScript Objects
• JavaScript Prototype
• Variable Scope and Hoisting
• JavaScript’s “this” With Clarity
• Apply, Call, and Bind
• Object Oriented JavaScript
• IIFE
• setTimeout and setInterval

Advanced JavaScript:

• Closure
• Modules and Namespaces
• Async awaits
• Promise
• Hoisting
• Event loop
• Currying

JavaScript DOM

• How to traverse DOM
• attr vs property HTML
• Element vs Node
• HTMLCollection vs NodeList
• Event bubbling and capturing
• Document fragment

Useful DOM resource

• DOM traversals
• queryselector vs queryselectorall vs getelementsbyclassname
• The DOM tree and nodes
• Access elements in the DOM
• Changes to the DOM

Web performance

• Critical rendering path (DOM, CSSOM, RenderTree, Layout, Paint)
• preload, preconnect, prefetch, dns-prefetch – resource hinting
• catch-control header

Generic topic

• Design pattern
• Data structure
• Algorithms
• Recursion

Additional concepts

• Micro-frontends
• Behavioral questions
• Logical reasoning

Code challenge

• https://www.jschallenger.com/
• https://www.educative.io/blog/crack-amazon-coding-interview-questions
• https://leetcode.com/tag/string/
• https://leetcode.com/tag/array/
• https://leetcode.com/tag/tree/