Return null for outer/inner width/height calls on window/document. Fixes #7557.

src/css.js

@@ -170,6 +170,11 @@ jQuery.each(["height", "width"], function( i, name ) {
 		get: function( elem, computed, extra ) {
 			var val;
 
+			// Tests for window/document
+			if ( !elem.style ) {
+				return null;
+			}
+
 			if ( computed ) {
 				if ( elem.offsetWidth !== 0 ) {
 					val = getWH( elem, name, extra );
@@ -196,7 +201,6 @@ jQuery.each(["height", "width"], function( i, name ) {
 
 				if ( val < 0 || val == null ) {
 					val = elem.style[ name ];
-
 					// Should return "auto" instead of 0, use 0 for
 					// temporary backwards-compat
 					return val === "" || val === "auto" ? "0px" : val;

src/dimensions.js

@@ -7,15 +7,17 @@ jQuery.each([ "Height", "Width" ], function( i, name ) {
 
 	// innerHeight and innerWidth
 	jQuery.fn["inner" + name] = function() {
-		return this[0] ?
-			parseFloat( jQuery.css( this[0], type, "padding" ) ) :
+		var ret;
+		return this[0] && !isNaN( ret = parseFloat(jQuery.css( this[0], type, "padding" )) ) ?
+			ret :
 			null;
 	};
 
 	// outerHeight and outerWidth
 	jQuery.fn["outer" + name] = function( margin ) {
-		return this[0] ?
-			parseFloat( jQuery.css( this[0], type, margin ? "margin" : "border" ) ) :
+		var ret;
+		return this[0] && !isNaN( ret = parseFloat(jQuery.css( this[0], type, margin ? "margin" : "border" )) ) ?
+			ret :
 			null;
 	};
 

test/unit/dimensions.js

@@ -107,7 +107,13 @@ test("height() with function args", function() {
 });
 
 test("innerWidth()", function() {
-	expect(4);
+	expect(8);
+
+	equals(jQuery(window).innerWidth(), null, "Test on window without margin option");
+	equals(jQuery(window).innerWidth(true), null, "Test on window with margin option");
+
+	equals(jQuery(document).innerWidth(), null, "Test on document without margin option");
+	equals(jQuery(document).innerWidth(true), null, "Test on document with margin option");
 
 	var $div = jQuery("#nothiddendiv");
 	// set styles
@@ -136,7 +142,13 @@ test("innerWidth()", function() {
 });
 
 test("innerHeight()", function() {
-	expect(4);
+	expect(8);
+
+	equals(jQuery(window).innerHeight(), null, "Test on window without margin option");
+	equals(jQuery(window).innerHeight(true), null, "Test on window with margin option");
+
+	equals(jQuery(document).innerHeight(), null, "Test on document without margin option");
+	equals(jQuery(document).innerHeight(true), null, "Test on document with margin option");
 
 	var $div = jQuery("#nothiddendiv");
 	// set styles
@@ -165,7 +177,12 @@ test("innerHeight()", function() {
 });
 
 test("outerWidth()", function() {
-	expect(7);
+	expect(11);
+
+	equal( jQuery( window ).outerWidth(), null, "Test on window without margin option" );
+	equal( jQuery( window ).outerWidth( true ), null, "Test on window with margin option" );
+	equal( jQuery( document ).outerWidth(), null, "Test on document without margin option" );
+	equal( jQuery( document ).outerWidth( true ), null, "Test on document with margin option" );
 
 	var $div = jQuery("#nothiddendiv");
 	$div.css("width", 30);
@@ -195,7 +212,12 @@ test("outerWidth()", function() {
 });
 
 test("outerHeight()", function() {
-	expect(7);
+	expect(11);
+
+	equal( jQuery( window ).outerHeight(), null, "Test on window without margin option" );
+	equal( jQuery( window ).outerHeight( true ), null, "Test on window with margin option" );
+	equal( jQuery( document ).outerHeight(), null, "Test on document without margin option" );
+	equal( jQuery( document ).outerHeight( true ), null, "Test on document with margin option" );
 
 	var $div = jQuery("#nothiddendiv");
 	$div.css("height", 30);