- if ( value != undefined ) {
- if ( name == "type" && jQuery.nodeName(elem,"input") && elem.parentNode )
- throw "type property can't be changed";
- elem.setAttribute( name, value );
+ // These attributes require special treatment
+ var special = /href|src|style/.test( name );
+
+ // Safari mis-reports the default selected property of a hidden option
+ // Accessing the parent's selectedIndex property fixes it
+ if ( name == "selected" && elem.parentNode )
+ elem.parentNode.selectedIndex;
+
+ // If applicable, access the attribute via the DOM 0 way
+ if ( name in elem && notxml && !special ) {
+ if ( set ){
+ // We can't allow the type property to be changed (since it causes problems in IE)
+ if ( name == "type" && jQuery.nodeName( elem, "input" ) && elem.parentNode )
+ throw "type property can't be changed";
+
+ elem[ name ] = value;
+ }
+
+ // browsers index elements by id/name on forms, give priority to attributes.
+ if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) )
+ return elem.getAttributeNode( name ).nodeValue;
+
+ // elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
+ // http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
+ if ( name == "tabIndex" ) {
+ var attributeNode = elem.getAttributeNode( "tabIndex" );
+ return attributeNode && attributeNode.specified
+ ? attributeNode.value
+ : elem.nodeName.match(/(button|input|object|select|textarea)/i)
+ ? 0
+ : elem.nodeName.match(/^(a|area)$/i) && elem.href
+ ? 0
+ : undefined;
+ }
+
+ return elem[ name ];