Thread by @Prathkum

The next 19 tweets will help you start your JavaScript journey with zero inconvenience

🧵 👇🏻

Some valid reasons why you should learn JavaScript

🔹 Currently used by 94.5% websites
🔹 Wide range of applications including mobile and desktop devices
🔹 Most in-demand language

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Here's a crash course of JavaScript by Freecodecamp.

Crash courses are just for quick look. Don't just stop learning after it. Keep exploring things by your own



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First things first, interesting part about JavaScript is that you can start writing it directly in your browser.

Few simple steps:

- Open your browser
- Right click anywhere
- Inspect
- A window will come
- From the top navigation bar, go to console
- Start writing

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JavaScript is a vast language but the basic principles are same here as well. In the beginning you need to learn some basic concepts.

Let's see what are these concepts 👇🏻

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This is great website and here you'll find a proper syllabus of JavaScript

🔗 javascript.info

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Start with the basics of JavaScript or we can say basic of any programming language

- Print statement
- Data types and variables
- Basic operators
- Logical operators
- Comparisons
- Loops and statements

These all are pretty basic stuff in any programming language

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📌 Start with JavaScript Variables

Variable are nothing but containers for storing data values. You will use them almost 100% in your JavaScript code.
There are three ways to declare a variable using var, let and const keyword

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📌 JavaScript helps you to add behaviour in you websites.

These two methods can help you to add interaction using which user can interact with your web page

1. alert()
2. prompt()

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alert() - display a dialog with an optional message, and to wait until the user dismisses the dialog

prompt() - display a dialog with an optional message prompting the user to input some text, and to wait until the user either submits the text or cancels the dialog

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📌 Loops and conditional statements

Loops are nothing but piece of code that repeats itself on a particular situation whereas conditional statement is a piece of code that runs when particular conditions occurs

Loops:

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Some intermediate topics that you should cover in JavaScript

- Arrays
- Objects
- Functions
- Arrow function
- Array methods

📌
📌

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I think much JavaScript would be good enough before jumping onto DOM manipulation

Basic things you need to cover in DOM

📌 Finding HTML Elements

- getElementsByTagName()
- getElementsById()
- getElementsByClassName()

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📌 Changing HTML Element

- element.innerHTML
- element.attribute
-element.style.property
- element.setAttribute(attr, value)

📌 Adding and deleting elements

- document.createElement(element)
- document.removeChild(element)
- document.appendChild(element)

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After learning these basic properties and methods, its time to move onto Evnets and Event Listener

The addEventListener() method attaches an event handler to the specified element.

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Upto this point you will able to make a fully functional website using JavaScript. But there are always some margin of improvement

Here are some advance key concepts

- Hoisting
- Closures
- Callbacks
- Promises
- Async & Await
- Currying
- And other ES6 feature

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Although you will need an editor as you go further into this field

There are plethora of editors out there. But I would recommend VS Code. Why?

- Many built-in features
- It's fast
- Large community
- IntelliSense code completion and debugging

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JavaScript in Visual Studio Code

code.visualstudio.com/docs/languages…

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Here I compiled 9 website so that you can start learning JavaScript with minimum efforts

https://twitter.com/Prathkum/status/1380418201503272960?s=20

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I think that's pretty much it for this thread. I hope you like it

Thanks for reading this ❤️

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