The JavaScript GUI Builder

The JavaScript GUI Builder is an interactive GUI Builder, available in D3PLOT, PRIMER and T/HIS, making it easier to create JavaScript GUIs, removing the need to write code to create windows and widgets.

It can be started by pressing the GUI Builder button in the JavaScript menu in any of the programs.

You can then design and save your GUI to a file:

Then read the file in your script to automatically generate the window and widgets: