How to combine external JavaScript?

To combine external JavaScript, open external JavaScript files in the browser, then copy paste their contents to a single file.

Here's are the steps:

  1. Open all external JavaScript files in the browser
  2. Create a new local JavaScript file (for example, code.js) in your text editor
  3. Copy paste first external JavaScript file to the local JavaScript file
  4. Press Enter in the local JavaScript file
  5. Copy paste the second external JavaScript file to the local JavaScript file
  6. Repeat for every external file
  7. Save the local JavaScript file and reference it in your HTML page like so: <script src="code.js"></script>