Fix :visible does not work properly when display:none is set directly on an element...

[jquery.git] / src / support.js

diff --git a/src/support.js b/src/support.js
index d35dbed..299fbd2 100644 (file)
--- a/src/support.js
+++ b/src/support.js
@@ -65,7 +65,8 @@
                checkClone: false,
                scriptEval: false,
                noCloneEvent: true,
-               boxModel: null
+               boxModel: null,
+               reliableHiddenOffsets: true
        };
 
        // Make sure that the options inside disabled selects aren't marked as disabled
@@ -117,6 +118,18 @@
 
                document.body.appendChild( div );
                jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
+
+               // Check if table cells still have offsetWidth/Height when they are set
+               // to display:none and there are still other visible table cells in a
+               // table row; if so, offsetWidth/Height are not reliable for use when
+               // determining if an element has been hidden directly using
+               // display:none (it is still safe to use offsets if a parent element is
+               // hidden; don safety goggles and see bug #4512 for more information).
+               // (only IE 8 fails this test)
+               div.innerHTML = '<table><tr><td style="display:none"></td><td>t</td></tr></table>';
+               jQuery.support.reliableHiddenOffsets = div.getElementsByTagName('td')[0].offsetHeight === 0;
+               div.innerHTML = '';
+
                document.body.removeChild( div ).style.display = 'none';
                div = null;
        });