Use JavaScript for web interactivity

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IT 9626 - 21 Programming for the Web - JavaScript

21 Programming for the Web - JavaScript

Objective: Use JavaScript for web interactivity

JavaScript is a powerful scripting language that enables dynamic and interactive content on web pages. It runs within the user's web browser, allowing developers to manipulate the Document Object Model (DOM), respond to user events, and communicate with servers.

Key Concepts

  • DOM Manipulation: JavaScript can access and modify the structure, content, and style of HTML elements.
  • Event Handling: JavaScript can respond to various user actions like clicks, mouseovers, and form submissions.
  • Dynamic Content: JavaScript allows for the creation and modification of content on a web page without requiring a full page reload.
  • AJAX (Asynchronous JavaScript and XML): JavaScript can communicate with a server in the background to fetch data and update parts of the page without interrupting the user experience.

Basic JavaScript Syntax

JavaScript code is typically embedded within HTML using the