Glad you hear you’ve got it working!
There isn’t really a webversion of the Tinker app, but that shouldn’t be that much of a problem. The main reason the Tinker app was made, was to connect your Cores using TI’s SmartConfig. Other than that, the app provides little usability, apart from controlling some pins. If it’s the SmartConfig you’re after, there’s a Java applet that you should be able to use. Everything you can do with the app, you should be able to recreate with a web-app.
There are some web-apps you can look at which provide log-in, function and variables functionalities. I’ve personally used this one a lot, since it’s proven to be very useful, especially while testing:
I tried to recreate the above by using the SparkJS library, mainly to test that out. You can see/use the page here. When you right-click for the source, you can see all the code/files.
What exactly are you trying to make?