Clean up expando removal code - only try to delete the expando from an element if...

[jquery.git] / src / support.js

diff --git a/src/support.js b/src/support.js
index c9ff58c..c9bfdf0 100644 (file)
--- a/src/support.js
+++ b/src/support.js
@@ -59,6 +59,7 @@
                parentNode: div.removeChild( div.appendChild( document.createElement("div") ) ).parentNode === null,
 
                // Will be defined later
+               deleteExpando: true,
                checkClone: false,
                scriptEval: false,
                noCloneEvent: true,
@@ -110,6 +111,17 @@
                document.body.appendChild( div );
                jQuery.boxModel = jQuery.support.boxModel = div.offsetWidth === 2;
                document.body.removeChild( div ).style.display = 'none';
+
+               // Test to see if it's possible to delete an expando from an element
+               // Fails in Internet Explorer
+               try {
+                       div.test = 1;
+                       delete doc.test;
+       
+               } catch(e) {
+                       jQuery.support.deleteExpando = false;
+               }
+
                div = null;
        });