JSlint complains for requestFullscreen

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From	emf <emfril@gmail.com>
Newsgroups	comp.lang.javascript
Subject	JSlint complains for requestFullscreen
Date	Fri, 1 Apr 2016 23:13:02 -0400
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in my Eye Exercises I am using this borrowed full-screen function:

function requestFullScreen() {
     "use strict";
     var el = document.body;
     // Supports most browsers and their versions.
     var requestMethod = el.requestFullScreen || el.webkitRequestFullScreen
             || el.mozRequestFullScreen || el.msRequestFullScreen;
     var wscript;

     if (requestMethod) {
         // Native full screen.
         requestMethod.call(el);
     } else if (window.ActiveXObject !== "undefined") {
         // Older IE.
         wscript = new window.ActiveXObject("WScript.Shell");
         if (wscript !== null) {
             wscript.SendKeys("{F11}");
         }
     }
}

It works fine, however JSlint complains for the last line of code:

Expected 'new' before 'wscript'.
             wscript.SendKeys("{F11}");

Sincerely I do not understand what the problem is and what JSlint wants 
me to change -- the variable has been declared and has been assigned a 
value -- and adding new in front creates more problems and doesn't make 
sense to me. Can someone explain what the problem is and how it can be 
solved to JSlint's satisfaction?

[BTW, the original code did not contain "window." before ActiveXObject; 
I added it to satisfy JSLint.]

also, I am curious, why did the author chose el as a variable name?

And do the experts of this newsgroup consider the code up-to-date?

Eustace

-- 
Eye exercises
http://emf.neocities.org/eyex.html

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JSlint complains for requestFullscreen emf <emfril@gmail.com> - 2016-04-01 23:13 -0400
  Re: JSlint complains for requestFullscreen "Christoph M. Becker" <cmbecker69@arcor.de> - 2016-04-02 18:58 +0200
    Re: JSlint complains for requestFullscreen emf <emfril@gmail.com> - 2016-04-03 04:24 -0400
  Re: JSlint complains for requestFullscreen Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2016-04-02 18:54 +0100
    Re: JSlint complains for requestFullscreen Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-04-03 12:37 +0200
      Re: JSlint complains for requestFullscreen Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2016-04-04 10:52 +0100

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