MouseEvent coordinates do not take scrolling into account.

[gugar20]

I have little to no knowledge of JavaScript, but I found it frustrating that the window scroll position would not be taken into account in the coordinates calculation.

I fixed it by going into the bundle.js file and editing the addEventListener function with the "mousemove" argument so as to add variables corresponding to
window.pageXOffset
window.pageYOffset

Adding (not substracting) these values to the coordinate calculation did the trick for me.

[jimmybow]

Hi, you can try visdcc.Run_js to run your javascript more flexibly
https://github.com/jimmybow/visdcc#3-visdccrun_js-

here is the example for adding event listener https://github.com/jimmybow/visdcc/blob/master/example/Run_js/Add_event_and_callback.py