Summary Java script basic to advanced

JavaScript Complete Tutorial in Tamil | Basic to
Advance | Tutor Joes
Tutor Joe's Stanley

Javascript Complete notes

Hi friends! In this notes, we will cover everything you need to know about JavaScript, from basic
to advanced concepts.

Setting up the Development Environment

Open Visual Studio Code or any other code editor of your choice.
Download Visual Studio Code from the official website: https://code.visualstudio.com/
Install Visual Studio Code by following the on-screen instructions.
Once installed, open Visual Studio Code and go to Extensions (Ctrl+Shift+X).
Search for "HTML CSS Support" and install the extension.
Add the following script tag to your HTML file:

<script src="script.js"></script>
Start a live server by right-clicking on your HTML file and selecting "Open with Live Server".
You are now ready to start coding in JavaScript!
Introduction to JavaScript
JavaScript is a dynamic programming language that is widely used for web development. It is
often compared to other programming languages like C, C++, and Java.

Variables and Data Types

In JavaScript, you can declare variables using the let keyword. For example:



let a = 25;

JavaScript supports various data types such as numbers, strings, booleans, symbols, dates, and
objects.



Numbers

, You can perform arithmetic operations on numbers in JavaScript. For example:



let a = 10;let b = 5;let c = a + b; // c will be 15

Strings

A string is a group of characters. You can use single quotes or double quotes to define a string.
For example:



let name = 'John';let message = "Welcome to my website!";

Booleans

A boolean can be either true or false. It is often used in conditional statements. For example:



let isMarried = true;

Symbols

Symbols are unique and immutable values that can be used as property keys in objects. They
were introduced in ECMAScript 6.



Dates

The Date object is used to work with dates and times in JavaScript. For example:



let today = new Date();console.log(today);

Objects

An object is a collection of key-value pairs. It can be used to represent complex data structures.
For example:



let person = { name: 'John', age: 25, isStudent: true};

Operators