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How can I reliably detect the browser without using window.navigator?

A thought:

  • IE uses ActiveX (still does up to IE11, legacy), You can fairly easy deduce the fact that the user is using IE from looking at activeX availability, however if the security settings are on, you need to fall back on, guess what, other feature detection.
  • Chrome and Firefox both support the use of extensions, maybe detecting these extensions will help
  • Chrome has the window['chrome']['webstore'] object available in the global scope.
  • You can sort through the window object with Object.keys and look for vendor specific names like 'moz' or 'ms' or 'o'.

If you combine moz, ms and chrome-object you can sniff out the three largest browsers.

On a side note, feature detection is still the best option, not for the OP, but for the "I'm-just-getting-into-programming-and-I-like-to-know-how-I-sniff-out-a-browser-programmers" out there.

Categories : Javascript

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