Combine the support tests for radioValue and appendChecked

src/attributes.js

@@ -363,6 +363,7 @@ jQuery.extend({
 				} else if ( !jQuery.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 it's default in case type is set after value
+					// This is for element creation
 					var val = elem.getAttribute("value");
 					elem.setAttribute( "type", value );
 					if ( val ) {

src/support.js

@@ -115,13 +115,15 @@ jQuery.support = (function() {
 		div.cloneNode( true ).fireEvent( "onclick" );
 	}
 
+	// Check if a radio maintains it's value
+	// after being appended to the DOM
 	input = document.createElement("input");
 	input.value = "t";
 	input.setAttribute("type", "radio");
 	support.radioValue = input.value === "t";
 
-	div.innerHTML = "<input type='radio' name='radiotest' checked='checked'/>";
-
+	input.setAttribute("checked", "checked");
+	div.appendChild( input );
 	fragment = document.createDocumentFragment();
 	fragment.appendChild( div.firstChild );
 
@@ -148,6 +150,10 @@ jQuery.support = (function() {
 	body.appendChild( div );
 	document.documentElement.appendChild( body );
 
+	// Check if a disconnected checkbox will retain its checked
+	// value of true after appended to the DOM (IE6/7)
+	support.appendChecked = input.checked;
+
 	support.boxModel = div.offsetWidth === 2;
 
 	if ( "zoom" in div.style ) {
@@ -186,14 +192,6 @@ jQuery.support = (function() {
 	support.reliableHiddenOffsets = isSupported && ( tds[ 0 ].offsetHeight === 0 );
 	div.innerHTML = "";
 
-	// Check if a disconnected checkbox will retain its checked
-	// value of true after appended to the DOM
-	input = document.createElement("input");
-	input.setAttribute("type", "checkbox");
-	input.checked = true;
-	div.appendChild( input );
-	support.appendChecked = input.checked;
-
 	// Check if div with explicit width and no margin-right incorrectly
 	// gets computed margin-right based on width of container. For more
 	// info see bug #3333