JavaScript console.log causes error: “Synchronous XMLHttpRequest on the main thread is deprecated…”

Question

I have been adding logs to the console to check the status of different variables without using the Firefox debugger.

However, in many places in which I add a

Answer 1

In a MVC application, I got this warning because I was opening a Kendo Window with a method that was returning a View(), instead of a PartialView(). The View() was trying to retrive again all the scripts of the page.