JavaScript Tutorial

The language for programming web pages.

Chapter Quiz Exercises
Course Topics
JS Introduction JS Where To JS Output JS Variables JS Data Types JS Functions JS Objects JS Arrays JS Strings JS If Conditions JS Loops JS Math JS Errors JS Scope JS DOM JS Events JS Promises & Async JS Classes JS JSON JS RegExp

JS Where To

Where to Put JavaScript?

JavaScript can be placed in the <head> section, in the <body> section, or in an external file.

3 Ways to Include JavaScript:

  1. Inline JS — inside an HTML element attribute
  2. Internal JS — inside a <script> tag in the HTML file
  3. External JS — in a separate .js file linked with <script src="">

Best Practice: Use external JS files to keep code organized and reusable.

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Topics
JS Introduction JS Where To JS Output JS Variables JS Data Types JS Functions JS Objects JS Arrays JS Strings JS If Conditions JS Loops JS Math JS Errors JS Scope JS DOM JS Events JS Promises & Async JS Classes JS JSON JS RegExp