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Hello! I’m Pratik Upreti, a seasoned software engineer with a rich background in languages like C#, Java, JavaScript, Python, SQL, and MySQL, I bring a diverse skill set to the table. I excel in backend and server technologies, including Node.js, Django, GraphQL, and Prisma ORM, and am adept in frontend development with Next.js, React.js and Tailwind CSS. Professionally, contributing at Brilliant Infotech.
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Imagine you're a chef. Just like a chef uses various ingredients and recipes to create a dish, a programmer uses a programming language to build websites and applications. JavaScript is one of these essential 'ingredients' in web development.
It started as a simple way to make web pages interactive but has now grown into a language that can power both front-end and back-end development.
Before you start cooking (coding), you need a kitchen (development environment). Here’s how to set it up:
Node.js: Think of it as your stove – it's where you'll 'cook' your JavaScript code. Download it from the Node.js official website.
Text Editor: This is like your chopping board. A place where you prepare your code. A popular choice is Visual Studio Code, which you can get from VS Code official website.
Let’s cook up something simple. We’ll make the "Hello, World!" dish. In your text editor, create a new file named hello.js and add the following recipe (code):
console.log('Hello, World!');
Now, 'cook' this dish. Open the terminal (like turning on your stove), go to the folder where your file is, and type node hello.js.
Voilà! You should see Hello, World! – your dish is served (your code is executed).
Variables: These are like containers in your kitchen. You store data (ingredients) in them, just like you store salt in a container/jar.
In JavaScript, you can declare variables using let, const, or var.In the next blog we will see the main difference between them.
let ingredient = "Tomato";
console.log(ingredient);
var name="Demo";
console.log(name);
const age=25;
console.log(age);
Data Types: Just like ingredients can be vegetables, fruits, or spices, data in JavaScript has types. The common ones are strings (text), numbers, and booleans (true/false).
let age = 10; // Number
let name = "Mango"; // String
let isRipe = true; // Boolean (true/false)
Operators: These are like your culinary techniques. They help you perform operations on your variables and values. For example, adding (+), subtracting (-), etc.
let sum = 5 + 3; // Adding 5 and 3
let difference = 10 - 2; // Subtracting 2 from 10Wrapping Up Day 1 and A Peek into Day 2 Great job on your first day! You’ve set up your kitchen, cooked your first dish, and learned about some basic ingredients of JavaScript. Tomorrow, we’ll explore how to make decisions in your code, like choosing what dish to cook based on what ingredients you have – we’ll learn about control structures like if statements and loops. Stay tuned!
Great job on your first day! You’ve set up your kitchen, cooked your first dish, and learned about some basic ingredients of JavaScript. Tomorrow, we’ll explore more on types of variables and their major differences, how to make decisions in your code, like choosing what dish to cook based on what ingredients you have – we’ll learn about control structures like if statements and loops. Stay tuned!