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Asked: 2026-06-13T23:21:36+00:00

It seems to me that Firefox ought to be better equipped to return the

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It seems to me that Firefox ought to be better equipped to return the proper value when using $(window).height().

I am using jQuery 1.8.2. Is this a bug in that particular build? Every other browser I have tested returns an appropriate value when calculating viewport height.

To work around this, I’ve used snip below to apply a pixel value to a div.

$(window).bind('cwsObjectsShown', function() {
  var height = $(window).height();
  if (height === 0) {
     height = window.innerHeight;
  }
  height = height - '120';
  $('#game_objects').css('height', height + 'px');
});
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1 Answer

  1. Editorial Team

    jQuery’s $(window).height() is sensitive to doctype. Try <!doctype html> ?

    The jQuery 1.8.1 release notes say

    Don’t use Quirks mode! jQuery has never supported Quirks mode and we do not perform any testing in Quirks. This can affect values like $(“window”).height(), and the jQuery 1.8 Quirks mode results did change in order to support some modern browser features. The majority of problem cases we’ve seen are from developers that wanted to be in Standards mode but had an invalid doctype or extraneous markup before their tag. When in doubt, use the simple and short <!doctype html>.

    For example, with jQuery 1.8.2 and Firefox 16, I get a valid $(window).height() with doctype html, but height 0 with doctype html5. In Chromium 20, both work. (The W3C HTML5 spec does say to use doctype html, not html5.)

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