Overview of web development technologies: HTML, CSS, JavaScript, and PHP.

1.2. JAVASCRIPT

JAVASCRIPT

Definition

JavaScript is a powerful, high-level scripting language used primarily for client-side interactivity and behavior in websites.

Features

1.       Manipulates HTML content through the DOM (Document Object Model).

2.       Supports event-driven programming (e.g., click, input).

3.       Performs form validation, animations, and API interactions.

4.       Works alongside HTML/CSS to create single-page applications (SPAs).

Syntax Example

<button onclick="showMessage()">Click Me</button>

<script>

function showMessage() {

    alert("You clicked the button!");

}

</script>

Advanced Features

1. Asynchronous programming using Promises and async/await.
2. Fetching external data using AJAX, Fetch API, or libraries like Axios.
3. Frameworks like React, Angular, and Vue.js enhance JavaScript capabilities.