You can manually add or update code to your script in two areas:
Show Source – Javascript
Javascript
Show Source - Javascript
You can update or add code to the script to include logic in the flow. If you want the script procedure to include instructions that cannot be controlled using the options present in the Script window, then you can manually edit the code in the source code area. You add functionalities to a page using the Show Source option. When you click the Show Souce button, auto-updated Javascript appears. You can manually edit the page to add additional functionalities.
Javascript Tab
You can add Javascript code to a script. You can add the code for the entire script to control the script functionality from the Javascript tab. For more information, see JavaScript.