如何检测IE11？ [英] How to detect IE11?

问题描述

当我想要检测IE时，我使用这个代码：

When I want to detect IE I use this code:

function getInternetExplorerVersion()
{
  var rv = -1;
  if (navigator.appName == 'Microsoft Internet Explorer')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}
function checkVersion()
{
  var msg = "You're not using Internet Explorer.";
  var ver = getInternetExplorerVersion();

  if ( ver > -1 )
  {
    msg = "You are using IE " + ver;
  }
  alert( msg );
}

但IE11正在返回您没有使用Internet Explorer。如何检测它？

But IE11 is returning "You're not using Internet Explorer". How can I detect it?

推荐答案

IE11不再报告为 MSIE ，根据此更改列表，有意避免错误检测。

IE11 no longer reports as MSIE, according to this list of changes, it's intentional to avoid mis-detection.

如果您真的想知道它是IE检测<$如果 navigator.appName 返回 Netscape ，则用户代理中的c $ c> Trident / （未经测试的）;

What you can do if you really want to know it's IE is to detect the Trident/ string in the user agent if navigator.appName returns Netscape, something like (the untested);

function getInternetExplorerVersion()
{
  var rv = -1;
  if (navigator.appName == 'Microsoft Internet Explorer')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  else if (navigator.appName == 'Netscape')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("Trident/.*rv:([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}

请注意，IE11（afaik）仍在预览中，用户代理可能发行前更改。

Note that IE11 (afaik) still is in preview, and the user agent may change before release.

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