Support: clean up comments and Support notation

Closes gh-1577

5 files changed, 16 insertions, 22 deletions

diff --git a/src/attributes/attr.js b/src/attributes/attr.js
index 8601cfe11..a4414d11f 100644
--- a/src/attributes/attr.js
+++ b/src/attributes/attr.js
@@ -96,8 +96,6 @@ jQuery.extend({
 			set: function( elem, value ) {
 				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;
 					elem.setAttribute( "type", value );
 					if ( val ) {
diff --git a/src/attributes/classes.js b/src/attributes/classes.js
index 7d714b8e1..101138415 100644
--- a/src/attributes/classes.js
+++ b/src/attributes/classes.js
@@ -83,7 +83,7 @@ jQuery.fn.extend({
 						}
 					}
 
-					// only assign if different to avoid unneeded rendering.
+					// Only assign if different to avoid unneeded rendering.
 					finalValue = value ? jQuery.trim( cur ) : "";
 					if ( elem.className !== finalValue ) {
 						elem.className = finalValue;
@@ -110,14 +110,14 @@ jQuery.fn.extend({
 
 		return this.each(function() {
 			if ( type === "string" ) {
-				// toggle individual class names
+				// Toggle individual class names
 				var className,
 					i = 0,
 					self = jQuery( this ),
 					classNames = value.match( rnotwhite ) || [];
 
 				while ( (className = classNames[ i++ ]) ) {
-					// check each className given, space separated list
+					// Check each className given, space separated list
 					if ( self.hasClass( className ) ) {
 						self.removeClass( className );
 					} else {
@@ -132,7 +132,7 @@ jQuery.fn.extend({
 					data_priv.set( this, "__className__", this.className );
 				}
 
-				// If the element has a class name or if we're passed "false",
+				// If the element has a class name or if we're passed `false`,
 				// then remove the whole classname (if there was one, the above saved it).
 				// Otherwise bring back whatever was previously saved (if anything),
 				// falling back to the empty string if nothing was stored.
diff --git a/src/attributes/prop.js b/src/attributes/prop.js
index e2b95dcab..d4ee8b6b9 100644
--- a/src/attributes/prop.js
+++ b/src/attributes/prop.js
@@ -28,7 +28,7 @@ jQuery.extend({
 		var ret, hooks, notxml,
 			nType = elem.nodeType;
 
-		// don't get/set properties on text, comment and attribute nodes
+		// Don't get/set properties on text, comment and attribute nodes
 		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
 			return;
 		}
@@ -64,8 +64,6 @@ jQuery.extend({
 	}
 });
 
-// Support: IE9+
-// Selectedness for an option in an optgroup can be inaccurate
 if ( !support.optSelected ) {
 	jQuery.propHooks.selected = {
 		get: function( elem ) {
diff --git a/src/attributes/support.js b/src/attributes/support.js
index 376b54ad2..5db5c5212 100644
--- a/src/attributes/support.js
+++ b/src/attributes/support.js
@@ -9,21 +9,21 @@ define([
 
 	input.type = "checkbox";
 
-	// Support: iOS 5.1, Android 4.x, Android 2.3
-	// Check the default checkbox/radio value ("" on old WebKit; "on" elsewhere)
+	// Support: iOS<=5.1, Android<=4.2+
+	// Default value for a checkbox should be "on"
 	support.checkOn = input.value !== "";
 
-	// Must access the parent to make an option select properly
-	// Support: IE9, IE10
+	// Support: IE<=11+
+	// Must access selectedIndex to make default options select
 	support.optSelected = opt.selected;
 
-	// Make sure that the options inside disabled selects aren't marked as disabled
-	// (WebKit marks them as disabled)
+	// Support: Android<=2.3
+	// Options inside disabled selects are incorrectly marked as disabled
 	select.disabled = true;
 	support.optDisabled = !opt.disabled;
 
-	// Check if an input maintains its value after becoming a radio
-	// Support: IE9, IE10
+	// Support: IE<=11+
+	// An input loses its value after becoming a radio
 	input = document.createElement( "input" );
 	input.value = "t";
 	input.type = "radio";
diff --git a/src/attributes/val.js b/src/attributes/val.js
index 42ef32343..4a1358a65 100644
--- a/src/attributes/val.js
+++ b/src/attributes/val.js
@@ -22,9 +22,9 @@ jQuery.fn.extend({
 				ret = elem.value;
 
 				return typeof ret === "string" ?
-					// handle most common string cases
+					// Handle most common string cases
 					ret.replace(rreturn, "") :
-					// handle cases where value is null/undef or number
+					// Handle cases where value is null/undef or number
 					ret == null ? "" : ret;
 			}
 
@@ -132,7 +132,7 @@ jQuery.extend({
 					}
 				}
 
-				// force browsers to behave consistently when non-matching value is set
+				// Force browsers to behave consistently when non-matching value is set
 				if ( !optionSet ) {
 					elem.selectedIndex = -1;
 				}
@@ -153,8 +153,6 @@ jQuery.each([ "radio", "checkbox" ], function() {
 	};
 	if ( !support.checkOn ) {
 		jQuery.valHooks[ this ].get = function( elem ) {
-			// Support: Webkit
-			// "" is returned instead of "on" if a value isn't specified
 			return elem.getAttribute("value") === null ? "on" : elem.value;
 		};
 	}