Information about html object library

The best thing to do would be to get a grasp of HTML, there are loads of resources out there for doing that. Once you understand html and the different types of web requests, POST, GET etc everything should fall into place

As far as I know, you can't since javascript will run throughout the page until you navigate away. You could keep checking whether the relevant objects you are wanting to use have beeb added to the dom with the relevant error handling though. just use getelementbyid in a loop until tge relevant object is found.

You don't really need to learn a backend language like php, just http requests, have a look on w3c schools. ideally you don't wabt to use internet explorer, you want to send requests directly to the server with libraries like msxml

It doesn't work I'm afraid norie, most javascript uses the ready event of the browser to start as before that the full dom may bot have loaded so the code will fail. Using the same value in vba is therefore unreliable since chances are you'd be running vba concurrently with the JavaScript.

Its one of tge reasons that it's best to avoid ie altogether for complex web applications (or at all if possible).

It may well do, but it isn't reliable; it depends heavily on the structure of the page and exactly what the javascript is doing and how much of it is actually required for the page to function. But it's all kind of moot since the automation of ie is only really necessary in fringe cases, 99% of web interaction can be performed much more efficiently without automating internet explorer.