JavaScript Programming Tutorial for Beginners
JavaScript has become one of the most popular programming languages in recent years. It is a versatile language that allows developers to build dynamic and interactive websites. If you are new to programming or want to learn JavaScript, this tutorial is the perfect starting point for you.
Getting Started with JavaScript:
To begin with, you need to have a basic understanding of HTML and CSS, as JavaScript is typically used in conjunction with these languages to create web pages. If you are already familiar with these languages, you’re ready to jump into JavaScript.
Setting up your Environment:
Before you start coding, you’ll need a code editor. There are many options available, such as Visual Studio Code, Sublime Text, or Atom. Choose the one that suits your preferences.
You don’t need to install anything to run JavaScript code, as most modern browsers support it natively. You can simply open your preferred browser and use the built-in developer tools to write and run JavaScript code.
Understanding JavaScript Syntax:
The syntax of JavaScript is similar to other programming languages like C++ or Java. However, JavaScript has a few unique features that make it special. Let’s go through some of the basic syntax rules:
1. Variables: To store and manipulate data, you need to declare variables using the “var,” “let,” or “const” keyword. “Var” has a global scope, while “let” and “const” have block scopes.
2. Data Types: JavaScript has several data types, including strings, numbers, booleans, arrays, and objects. Understanding the different data types and how to use them is crucial in JavaScript.
3. Operators: JavaScript offers several operators, such as arithmetic, comparison, logical, and assignment operators. These are used to perform various operations on data.
4. Control Flow: JavaScript allows you to control the flow of your code using conditional statements like “if-else” and loops like “for” and “while.”
Basic JavaScript Concepts:
Once you are familiar with the syntax, it’s time to dive into some of the core concepts of JavaScript. These concepts are essential to building any JavaScript application.
1. Functions: Functions are a fundamental part of JavaScript. They allow you to group and reuse blocks of code. You can define functions and call them whenever you need to execute that code.
2. Objects: JavaScript is an object-oriented programming language, which means objects play a significant role. Objects are collections of key-value pairs and can be used to represent real-world entities or structures.
3. Events: JavaScript enables you to make your website interactive by responding to user actions, such as clicking a button or hovering over an element. You can attach event listeners to HTML elements and define actions to be executed when events occur.
4. DOM Manipulation: The Document Object Model (DOM) is a programming interface for manipulating HTML documents. You can use JavaScript to dynamically modify HTML elements, change styles, add or remove elements, and more.
Practicing and Building Projects:
Once you grasp the basics, the best way to improve your JavaScript skills is through hands-on practice. Start by building small projects, like a simple calculator or a to-do list application. As you gain more confidence, challenge yourself with more complex projects.
There are also numerous online resources, tutorials, and coding challenges available to help you practice and enhance your skills. Don’t be afraid to experiment and explore different possibilities.
Conclusion:
JavaScript is a powerful language that allows you to create dynamic and interactive websites. This tutorial covered the fundamentals of JavaScript, including syntax, concepts, and some practical tips. By practicing and building projects, you can further strengthen your skills and unleash the full potential of JavaScript programming. So, have fun coding and welcome to the exciting world of JavaScript!
/**
* For of loop @5:00:30
**/
let num = new Set("bookkeeper");
for (const val of num) {
console.log(val);
}
5:15:48
The stack overflow error reached 11391 in my Chrome browser
done and dusted with this
can you suggest me a new playlist to upgrade myself on react/ angular/node js
5:00:21
Solution:
let data = new Set();
data.add(1);
data.add(2);
data.add('String1');
data.add('String2');
data.forEach(values => console.log(values))
49
Great effort Naveen reddy
answer for 3:41:39 is
let add=(num1,num2)=>
{
if(num1>0 && num2>0)
return num1+num2
}
let result=add(3,-8)
console.log(result)
answer for 3:16:50
let alien={
name:'nvin',
tech:'js',
laptop:{
cpu:'i7',
ram:4,
brand:'asus'
}
}
for(let key in alien.laptop){
console.log(key, alien.laptop[key])
}
Sir ,
I have a doubt.,
2:18:10
Here the ternary I tried the Same way it's work as well.
And also there I remove the zero like this:
result = (num%2) ? Even : odd
The code also work same.,
Then why we want put zero there sir.,
And how it's work without Zero I mentioned
11292
3:17:17
alien={
name:"Vamsi",
laptop:{
company:"Lenovo",
ram:8
}
}
for(let key in alien.laptop){
console.log(key, alien. Laptop[key])
}
/**
* Function to add two numbers
* add positive numbers
* @3:42
*/
let add = (num1, num2) => {
return Math.abs(num1) + Math.abs(num2);
};
console.log(`result = ${add(5, -6)}`);
solution @3:17:08
let alien = {
name: "Saif",
tech: "JS",
laptop: {
cpu: "i7",
ram: "16GB",
brand: "Mac",
},
};
for (let key in alien.laptop) {
console.log(key, alien.laptop[key]);
}
Hello Aliens, Hope you all are doing great.
3.16.43 ( Time Stamp) :
let allien = {
name : 'Sachin',
tech : 'JS',
laptop : {
cpu : 'i10',
ram : 4,
brand : 'hitachi'
}
};
for(let key in allien.laptop)
{
console.log(key, allien.laptop[key]);
}
since nobody have done the laptop code for all properties i am writing it :-
for(let key in alien.laptop)
{
console.log(key,alien.laptop[key]);
}
for(let key in alienss.laptop){
console.log(key, alienss.laptop[key])
}
5:00:19 ——-> Set in java script
Print the values using "For of"
let nums = new Set();
nums.add(2);
nums.add(9);
nums.add("komal");
nums.add("Dev");
nums.add(2);
console.log(nums);
for (let n of nums) {
console.log(n);
}
Set(4) { 2, 9, 'komal', 'Dev' }
2
9
komal
Dev
sir we can put object inside constructor
I wanted a quick JavaScript crash course before I headed to ReactJS. This video was awesome. Helped a lot. Thanks Navin Guruji..!!🙏
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