Strange Ie behavior when connecting through a proxy?

Question

JavaScript

At work, I connect to the Internet through a proxy server.
To do this, I prescribe the address / port in the browser properties.
When opening the browser, I enter the login password to access the proxy.
A web server is installed on a Windows computer to develop the site locally. And an exception has been added to the browser properties for the local address of the site so that the browser does not contact the proxy server when I visit it.
All browsers work fine.
Today I go to work on my localhost site in ie and he tells me in the console:

Объект не поддерживает свойство или метод "defineProperty"
var pimport=function(){for(var i in {"state":false,"host":"logreel.com"})Object.defineProperty(this,i,{value:{"state":false,"host":"localhost"}[i],writable:false,configurable:false});return this;};

I tell him, what if so?:
var pimport=function(){return $sata;};
He tells me okay, let's move on, the next line is already in another file:

Объект не поддерживает свойство или метод "addEventListener"
objectParrent.addEventListener(b[i],function(){a();},false);

I understand that he wakes up to say this every time he calls Object.
I connect to the Internet directly. Everything works fine.
What is going on?

Answer 1

IE doesn't have addEventListener or defineProperty. You may have enabled some kind of compatibility mode.