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

1 files changed, 35 insertions, 0 deletions

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;
+
+});