I am making a Chrome extension to work with Google Calendar and I wonder if it possible to instigate Google's own new event dialog (as per the image below) programmatically in JavaScript using the calendar API? If I could set what date was displayed too, that would be even better.
After lots of experimentation, I found that I can go to a URL like this:
https://calendar.google.com/calendar/u/0/r/eventedit?dates=20230329T220000Z/20230329T220000Z
and this will be the "more options" version of the dialog in the picture - you can modify the start/end date in the URL and the dialog will change accordingly. I'd still prefer the simpler dialog.
...and more details in this old SO question but still no info about getting the simpler dialog.