This document provides an introduction to JavaScript, including:
- Why use client-side scripting with JavaScript in addition to server-side PHP. JavaScript allows for faster user interfaces, more efficient page updates, and event-driven interactions.
- What JavaScript is - a lightweight scripting language used to make web pages interactive by inserting dynamic text, reacting to events, and performing calculations in the browser.
- Key differences between JavaScript and other languages like Java and PHP in terms of being interpreted vs compiled, syntax, and where code runs.
- How JavaScript uses event-driven programming in response to user actions rather than starting with a main method.
- The Document Object Model (DOM) which allows JavaScript to access