Use the property name in elem.removeAttribute in IE6/7 to ensure correct removals. Fixes #10514.

src/attributes.js

@@ -7,6 +7,7 @@ var rclass = /[\n\t\r]/g,
 	rfocusable = /^(?:button|input|object|select|textarea)$/i,
 	rclickable = /^a(?:rea)?$/i,
 	rboolean = /^(?:autofocus|autoplay|async|checked|controls|defer|disabled|hidden|loop|multiple|open|readonly|required|scoped|selected)$/i,
+	getSetAttribute = jQuery.support.getSetAttribute,
 	nodeHook, boolHook, fixSpecified;
 
 jQuery.fn.extend({
@@ -143,8 +144,10 @@ jQuery.fn.extend({
 	},
 
 	hasClass: function( selector ) {
-		var className = " " + selector + " ";
-		for ( var i = 0, l = this.length; i < l; i++ ) {
+		var className = " " + selector + " ",
+			i = 0,
+			l = this.length;
+		for ( ; i < l; i++ ) {
 			if ( this[i].nodeType === 1 && (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) > -1 ) {
 				return true;
 			}
@@ -154,7 +157,7 @@ jQuery.fn.extend({
 	},
 
 	val: function( value ) {
-		var hooks, ret,
+		var hooks, ret, isFunction,
 			elem = this[0];
 
 		if ( !arguments.length ) {
@@ -177,7 +180,7 @@ jQuery.fn.extend({
 			return undefined;
 		}
 
-		var isFunction = jQuery.isFunction( value );
+		isFunction = jQuery.isFunction( value );
 
 		return this.each(function( i ) {
 			var self = jQuery(this), val;
@@ -225,7 +228,7 @@ jQuery.extend({
 		},
 		select: {
 			get: function( elem ) {
-				var value,
+				var value, i, max, option,
 					index = elem.selectedIndex,
 					values = [],
 					options = elem.options,
@@ -237,8 +240,10 @@ jQuery.extend({
 				}
 
 				// Loop through all the selected options
-				for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
-					var option = options[ i ];
+				i = one ? index : 0;
+				max = one ? index + 1 : options.length;
+				for ( ; i < max; i++ ) {
+					option = options[ i ];
 
 					// Don't return options that are disabled or in a disabled optgroup
 					if ( option.selected && (jQuery.support.optDisabled ? !option.disabled : option.getAttribute("disabled") === null) &&
@@ -292,7 +297,8 @@ jQuery.extend({
 	},
 
 	attr: function( elem, name, value, pass ) {
-		var nType = elem.nodeType;
+		var ret, hooks, notxml,
+			nType = elem.nodeType;
 
 		// don't get/set attributes on text, comment and attribute nodes
 		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
@@ -308,7 +314,6 @@ jQuery.extend({
 			return jQuery.prop( elem, name, value );
 		}
 
-		var ret, hooks,
 		notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
 
 		// Normalize the name if needed
@@ -355,13 +360,14 @@ jQuery.extend({
 
 			for ( ; i < l; i++ ) {
 				name = attrNames[ i ].toLowerCase();
+				propName = jQuery.propFix[ name ] || name;
 
 				// See #9699 for explanation of this approach (setting first, then removal)
 				jQuery.attr( elem, name, "" );
-				elem.removeAttribute( name );
+				elem.removeAttribute( getSetAttribute ? name : propName );
 
 				// Set corresponding property to false for boolean attributes
-				if ( rboolean.test( name ) && (propName = jQuery.propFix[ name ] || name) in elem ) {
+				if ( rboolean.test( name ) && propName in elem ) {
 					elem[ propName ] = false;
 				}
 			}
@@ -424,14 +430,14 @@ jQuery.extend({
 	},
 
 	prop: function( elem, name, value ) {
-		var nType = elem.nodeType;
+		var ret, hooks, notxml,
+			nType = elem.nodeType;
 
 		// don't get/set properties on text, comment and attribute nodes
 		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
 			return undefined;
 		}
 
-		var ret, hooks,
 		notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
 
 		if ( notxml ) {
@@ -510,7 +516,7 @@ boolHook = {
 };
 
 // IE6/7 do not support getting/setting some attributes with get/setAttribute
-if ( !jQuery.support.getSetAttribute ) {
+if ( !getSetAttribute ) {
 
 	fixSpecified = {
 		name: true,

test/unit/attributes.js

@@ -452,7 +452,9 @@ test("attr('tabindex', value)", function() {
 
 test("removeAttr(String)", function() {
 	expect(9);
-	equal( jQuery("#mark").removeAttr( "class" )[0].className, "", "remove class" );
+	var $first;
+
+	equal( jQuery("#mark").removeAttr( "class" ).attr("class"), undefined, "remove class" );
 	equal( jQuery("#form").removeAttr("id").attr("id"), undefined, "Remove id" );
 	equal( jQuery("#foo").attr("style", "position:absolute;").removeAttr("style").attr("style"), undefined, "Check removing style attribute" );
 	equal( jQuery("#form").attr("style", "position:absolute;").removeAttr("style").attr("style"), undefined, "Check removing style attribute on a form" );
@@ -465,8 +467,8 @@ test("removeAttr(String)", function() {
 	equal( document.getElementById("text1").readOnly, false, "removeAttr sets boolean properties to false" );
 
 	try {
-		jQuery("#first").attr("contenteditable", "true").removeAttr("contenteditable");
-		ok( true, "Removing contenteditable does not throw an error.");
+		$first = jQuery("#first").attr("contenteditable", "true").removeAttr("contenteditable");
+		equal( $first.attr('contenteditable'), undefined, "Remove the contenteditable attribute" );
 	} catch(e) {
 		ok( false, "Removing contenteditable threw an error (#10429)" );
 	}