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Embedding JavaScript

Explore three ways to embed JavaScript into HTML documents including inline scripting for small tasks, internal scripting within the HTML file, and external scripting for modular code. Understand how each method works, their benefits, and best practices to write clean, maintainable code and enhance web page interactivity.

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In this lesson, we will explore three ways to integrate JavaScript into an HTML document to make web pages interactive. Understanding these methods will help us choose the most efficient approach depending on the project’s needs.

How does JavaScript work?

JavaScript runs in the browser using JavaScript engines like Google Chrome’s V8. When we include JavaScript in our HTML, the browser interprets and executes the code line by line. There are three main ways to include JavaScript in a web page:

  • Inline JavaScript: Written directly within HTML tags.

  • Internal JavaScript: Included in a <script> block within the HTML document.

  • External JavaScript: Linked through an external .js file.

Inline scripting

Inline scripting embeds JavaScript directly ...