Fix #10814. Make support tests lazy and broken out to components.

4 files changed, 47 insertions, 11 deletions

diff --git a/src/attributes/attr.js b/src/attributes/attr.js
index 170e6a39e..e47bde2f3 100644
--- a/src/attributes/attr.js
+++ b/src/attributes/attr.js
@@ -2,9 +2,9 @@ define([
 	"../core",
 	"../var/rnotwhite",
 	"../var/strundefined",
-	"../selector",
-	"../support"
-], function( jQuery, rnotwhite, strundefined ) {
+	"./support",
+	"../selector"
+], function( jQuery, rnotwhite, strundefined, support ) {
 
 var nodeHook, boolHook,
 	attrHandle = jQuery.expr.attrHandle;
@@ -93,7 +93,8 @@ jQuery.extend({
 	attrHooks: {
 		type: {
 			set: function( elem, value ) {
-				if ( !jQuery.support.radioValue && value === "radio" && jQuery.nodeName(elem, "input") ) {
+				if ( !support.radioValue && value === "radio" &&
+					jQuery.nodeName( elem, "input" ) ) {
 					// Setting the type on a radio button after the value resets the value in IE6-9
 					// Reset value to default in case type is set after value during creation
 					var val = elem.value;
diff --git a/src/attributes/prop.js b/src/attributes/prop.js
index 95462bbbb..f321b1ef7 100644
--- a/src/attributes/prop.js
+++ b/src/attributes/prop.js
@@ -1,7 +1,7 @@
 define([
 	"../core",
-	"../support"
-], function( jQuery ) {
+	"./support"
+], function( jQuery, support ) {
 
 var rfocusable = /^(?:input|select|textarea|button)$/i;
 
@@ -65,7 +65,7 @@ jQuery.extend({
 
 // Support: IE9+
 // Selectedness for an option in an optgroup can be inaccurate
-if ( !jQuery.support.optSelected ) {
+if ( !support.optSelected ) {
 	jQuery.propHooks.selected = {
 		get: function( elem ) {
 			var parent = elem.parentNode;
diff --git a/src/attributes/support.js b/src/attributes/support.js
new file mode 100644
index 000000000..aa9adf265
--- /dev/null
+++ b/src/attributes/support.js
@@ -0,0 +1,35 @@
+define([
+	"../var/support"
+], function( support ) {
+
+(function () {
+	var input = document.createElement( "input" ),
+		select = document.createElement( "select" ),
+		opt = select.appendChild( document.createElement( "option" ) );
+
+	input.type = "checkbox";
+
+	// Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3
+	// Check the default checkbox/radio value ("" on old WebKit; "on" elsewhere)
+	support.checkOn = input.value !== "";
+
+	// Must access the parent to make an option select properly
+	// Support: IE9, IE10
+	support.optSelected = opt.selected;
+
+	// Make sure that the options inside disabled selects aren't marked as disabled
+	// (WebKit marks them as disabled)
+	select.disabled = true;
+	support.optDisabled = !opt.disabled;
+
+	// Check if an input maintains its value after becoming a radio
+	// Support: IE9, IE10
+	input = document.createElement( "input" );
+	input.value = "t";
+	input.type = "radio";
+	support.radioValue = input.value === "t";
+})();
+
+return support;
+
+});
diff --git a/src/attributes/val.js b/src/attributes/val.js
index 73a3bf3ea..74d8c9c46 100644
--- a/src/attributes/val.js
+++ b/src/attributes/val.js
@@ -1,7 +1,7 @@
 define([
 	"../core",
-	"../support"
-], function( jQuery ) {
+	"./support"
+], function( jQuery, support ) {
 
 var rreturn = /\r/g;
 
@@ -95,7 +95,7 @@ jQuery.extend({
 					// IE6-9 doesn't update selected after form reset (#2551)
 					if ( ( option.selected || i === index ) &&
 							// Don't return options that are disabled or in a disabled optgroup
-							( jQuery.support.optDisabled ? !option.disabled : option.getAttribute("disabled") === null ) &&
+							( support.optDisabled ? !option.disabled : option.getAttribute( "disabled" ) === null ) &&
 							( !option.parentNode.disabled || !jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {
 
 						// Get the specific value for the option
@@ -146,7 +146,7 @@ jQuery.each([ "radio", "checkbox" ], function() {
 			}
 		}
 	};
-	if ( !jQuery.support.checkOn ) {
+	if ( support.checkOn ) {
 		jQuery.valHooks[ this ].get = function( elem ) {
 			// Support: Webkit
 			// "" is returned instead of "on" if a value isn't specified