Javascript Doc

a sort-of guide to revise/learn JS

1) Basics of JavaScript

• Variables (how variables work)
• var, let, const
• hoisting of variables

2) Functions

• Arrow Functions
• Higher Order Functions

3) Arrays and Objects

• Array De-structuring
• Object De-structuring
• rest operator
• spread operator

4) Conditions in JavaScript

• if else
• ternary operators
• using && and ||
• Optional chaining

5) Array Methods

• map()
• filter()
• reduce()
• sort()

6) Event Listeners

• onClick
• onBlur
• onChange
• onFocus
• setTimeout() & setInterval()
• EventBubling and EventCapturing method

7) Asynchronous Events

• Callbacks
• Callback Hell
• Promises
• Promise APIS

8) Async Await

9) Try Catch

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all the js you need to know for react.js (almost)

• Use arrow functions for cleaner code and better callback handling.
• Utilize ternary operators for concise conditionals in React's JSX.
• Understand object destructuring and copying with spread operator.
• Employ the .map() function for rendering dynamic lists in React.
• Use .filter() function to manipulate and filter arrays in React. Understanding searching and filtering through lists using .filter() function.
• Key concepts: Promises, async/await, and data fetching with Fetch API are crucial for web development and communication with APIs.