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How to add JavaScript

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Adding JavaScript to Your Web Page

There are two ways of adding JavaScript to your web page. They are

  • External JavaScript
  • Inline (Internal) JavaScript

External JavaScript

The HTML <script> tag with src attribute is used to link JavaScript to a webpage.

Note: The external JavaScript file used in this example is alert-me.js

Example

HTML Online Editor
<!DOCTYPE html> <html lang="en-US"> <body> <button onclick="myFunction()">Click Me</button> <script src="/script/alert-me.js"></script> </body> </html>

Inline JavaScript

The HTML <script> tag is used to add inline JavaScript to a webpage.

Example

HTML Online Editor
<!DOCTYPE html> <html lang="en-US"> <body> <button onclick="myFunction()">Click Me</button> <script> // Inline JavaScript goes here. function myFunction(){ alert("I'm from Inline JavaScript"); } </script> </body> </html>

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