If you have a Google account, you can save this code to your Google Drive.
Google will ask you to confirm Google Drive access.
Save file as:
If you have saved a file to Google Drive, you can open it here:
Click "Try it". Wait 3 seconds. The page will alert "Hello".
Click "Stop" to prevent the first function to execute.(p>
(You must click "Stop" before the 3 seconds are up.)