Comments on: Reliable IE 7 detection with JavaScript? http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/ Hypertext rulez™ Sun, 07 Sep 2008 18:00:54 +0000 http://wordpress.org/?v=2.6 By: And Clover http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-4431 And Clover Tue, 21 Nov 2006 12:19:16 +0000 http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-4431 <blockquote>@if (@_jscript_version == 7)</blockquote><p>Incidentally the correct _jscript_version value for IE7 is 5.7. (Similarly, IE6 is 5.6.)</p>

@if (@_jscript_version == 7)

Incidentally the correct _jscript_version value for IE7 is 5.7. (Similarly, IE6 is 5.6.)

]]> By: ken snyder http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-4011 ken snyder Fri, 17 Nov 2006 23:41:48 +0000 http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-4011 Unfortunately, IE7 has an option to disable native support for XMLHTTP. Unchecking Tools > Options > Advanced > "Enable native XMLHTTP support" causes window.XMLHttpRequest to be undefined. Tested using following block: <code><script> document.write(window.XMLHttpRequest); </script></code> Unfortunately, IE7 has an option to disable native support for XMLHTTP. Unchecking Tools > Options > Advanced > “Enable native XMLHTTP support” causes window.XMLHttpRequest to be undefined. Tested using following block:

<script>
document.write(window.XMLHttpRequest);
</script>

]]> By: DannyB http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3697 DannyB Wed, 15 Nov 2006 19:12:52 +0000 http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3697 You could use conditional compilation… untested but should work… <code> isIE7 = false; /*@cc_on   @if (@_jscript_version == 7)     isIE7 = true;   @end @*/ </code> You could use conditional compilation… untested but should work…
isIE7 = false;
/*@cc_on
  @if (@_jscript_version == 7)
    isIE7 = true;
  @end
@*/

]]> By: marko http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3637 marko Wed, 01 Nov 2006 15:02:56 +0000 http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3637 Nick, true that... thanks! Nick, true that… thanks!

]]> By: marko http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3636 marko Wed, 01 Nov 2006 14:56:31 +0000 http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3636 Berislav, sometimes you simply can’t test for a method or object property. Testing <code>typeof document.style.minHeight</code> returns <code>string</code> in all IE versions, but in IE 6 and lower, you can’t actually apply it, due to unsupported CSS property <code>min-height</code>. What’s even worse, some other <code>element.style</code> object properties, that have unsupported CSS counterparts in IE 6 or lower (for example <code>document.style.maxHeight</code>) return expectable <code>undefined</code>, so there’s no key one could rely on. Or maybe I’m missing something here... Berislav, sometimes you simply can’t test for a method or object property.

Testing typeof document.style.minHeight returns string in all IE versions, but in IE 6 and lower, you can’t actually apply it, due to unsupported CSS property min-height.

What’s even worse, some other element.style object properties, that have unsupported CSS counterparts in IE 6 or lower (for example document.style.maxHeight) return expectable undefined, so there’s no key one could rely on.

Or maybe I’m missing something here…

]]> By: Berislav Lopac http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3632 Berislav Lopac Tue, 31 Oct 2006 22:09:32 +0000 http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3632 The best approach is not to test for browsers in general, but to test for only those features you need. If you need document.all, test for it, not for a particular version of IE. The best approach is not to test for browsers in general, but to test for only those features you need. If you need document.all, test for it, not for a particular version of IE.

]]> By: Aleksandar http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3631 Aleksandar Tue, 31 Oct 2006 19:56:02 +0000 http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3631 Wow, great tip about window.XMLHttpRequest, which I might find a use for, very soon. Wow, great tip about window.XMLHttpRequest, which I might find a use for, very soon.

]]> By: Nick Fitzsimons http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3630 Nick Fitzsimons Tue, 31 Oct 2006 19:07:26 +0000 http://www.maratz.com/blog/archives/2006/10/31/reliable-ie-7-detection-with-javascript/#comment-3630 You don't need to use the triadic operator, as your bracketed condition returns a Boolean value. Just use <code> var ie7 = (document.all && !window.opera && window.XMLHttpRequest); </code> (although the Conditional Comment method is rather elegant, IMHO.) You don’t need to use the triadic operator, as your bracketed condition returns a Boolean value. Just use

var ie7 = (document.all && !window.opera && window.XMLHttpRequest);

(although the Conditional Comment method is rather elegant, IMHO.)

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