🚀 JavaScript Roadmap

1. Fundamentals
(Beginner Level)
📌 Topics to Learn
  • • Variables (let, const, var)
  • • Data Types (string, number, boolean, null, undefined, symbol, bigint)
  • • Operators (+, -, *, /, ==, ===, !=, !==, &&, ||, !, etc.)
  • • Conditionals (if, else, switch)
  • • Loops (for, while, do-while)
  • • Functions (function, return, arrow functions)
2. Intermediate Level
📌 Topics to Learn
  • • Arrays & Objects (map, filter, reduce, forEach)
  • • ES6+ Features (destructuring, spread/rest, template literals, default parameters)
  • • Closures (functions within functions)
  • • Promises & Async/Await (handling asynchronous code)
  • • Event Loop & Callbacks (understanding execution order)
  • • Error Handling (try-catch, finally)
3. Advanced JavaScript
📌 Topics to Learn
  • • Prototypes & Prototypal Inheritance
  • • Closures & Scope Chain
  • • Debouncing & Throttling (Performance Optimization)
  • • Currying & Partial Application
  • • Event Delegation (Efficient event handling)
  • • JavaScript Modules (import/export)
  • Table of Contents
  • 1. Understanding how Links and protocols works 🚀
  • 2. HTTP, Web Browsers, and Web Servers
  • 3. Unveiling the Web Browser: Gateway to the World Wide Web

How to Create a Website Loader: A Guide with Examples and Resources

WEBSITE LOADER

A website loader (or preloader) is an animated graphic that appears while a web page or resource is loading. It enhances user experience by informing visitors that content is being prepared, preventing them from seeing a blank or unresponsive page.

Why Use a Loader?

  • Enhances User Experience: Prevents frustration caused by slow-loading pages.
  • Keeps Visitors Engaged: Makes waiting feel less boring.
  • Improves Branding: Custom loaders can match your website's theme and aesthetics.
Step 1: Creating a Simple CSS Loader

You can create a basic loader using HTML and CSS:

 

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Loader</title>
</head>
<body>

  <!-- Your content goes here -->
  <div class="loader"></div>
  <script src="app.js"></script>
</body>
</html>
Step 2: CSS for the Loader Animation

.loader {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
   border-radius: 50%;
   animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
   100% { transform: rotate(360deg); }
}

Step 3:Adding JavaScript to Show/Hide Loader

If you want the loader to appear while the page loads and disappear once it’s ready, use this JavaScript snippet:

 

document.addEventListener("DOMContentLoaded", function () {
document.querySelector(".loader").style.display = "none";
});

This hides the loader once the content has fully loaded.

Prerequisites

Before diving into JavaScript, ensure the following:

  1. Text Editor: Have a reliable text editor, such as Visual Studio Code or Sublime Text, installed on your computer.
  2. Understanding of HTML and CSS: Familiarize yourself with the basics of HTML and CSS, as JavaScript often works in tandem with these technologies.

Reference Websites for Loaders

If you don’t want to create a loader from scratch, you can use pre-made ones from the following websites:

 

React

  • Jan 18 2025
  • Difficult
  • Interview Question

Unleashing the Power of JavaScript: multiple event techniques

Incorporating dynamic and interactive elements into your content can significantly elevate the user experience. In this tutorial, we’ll explore the fascinating world of JavaScript, covering essential techniques to…

Prev Next
Leave a Reply

    Review Your Cart
    0
    Add Coupon Code
    Subtotal
    Checkout