Tutoriel HTML, CSS and JavaScript for beginners

Tutoriel HTML, CSS and JavaScript for beginners


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programming 10 months ago

 

HTML: The Foundation of Web Pages

  • What it is: HTML (HyperText Markup Language) is the backbone of every web page. It defines the structure and content of a page, such as headings, paragraphs, images, and links.
  • Key concepts:
    • Elements: Building blocks of HTML, like <h1> for headings, <p> for paragraphs, <img> for images, and more.
    • Tags: Used to define the start and end of elements (e.g., <h1>This is a heading</h1>).
    • Attributes: Provide additional information about elements (e.g., src attribute for image source).
  • Basic structure of an HTML page:

HTML

<!DOCTYPE html>
<html>
<head>
  <title>Page Title</title>
</head>
<body>
  </body>
</html>

 

CSS: Styling for Beauty

  • What it is: CSS (Cascading Style Sheets) controls the visual presentation of web pages, including colors, fonts, layouts, and more.
  • How it works: CSS rules are applied to HTML elements to style them.
  • Key concepts:
    • Selectors: Target specific HTML elements to apply styles.
    • Properties: Define the style characteristics you want to change (e.g., color, font-size, margin).
    • Values: Set the desired values for properties (e.g., color: blue;).
  • Example CSS rule:

CSS

h1 {
  color: red;
  font-size: 40px;
}

 

JavaScript: Adding Interactivity

  • What it is: JavaScript is a scripting language that brings interactivity and dynamic behavior to web pages.
  • What it does:
    • Interacts with HTML elements to modify their content and appearance.
    • Responds to user actions (like clicks, form submissions).
    • Creates animations and visual effects.
  • Key concepts:
    • Variables: Store data for later use.
    • Functions: Reusable blocks of code that perform specific tasks.
    • Events: Actions that trigger JavaScript code execution (e.g., clicks, page loads).
  • Example JavaScript code:

JavaScript

function greet() {
  alert("Hello, world!");
}

 

 

Working Together: The Dynamic Trio

  • HTML provides the structure.
  • CSS adds the style.
  • JavaScript brings the action.

Practice and Exploration:

  • Use online resources and tutorials to delve deeper into each language.
  • Experiment with code examples and create your own web pages.
  • Build interactive and visually appealing websites by mastering these core technologies!