define( [

"../var/document",
"../var/support"

], function( document, support ) {

( function() {

var input = document.createElement( "input" ),
        select = document.createElement( "select" ),
        opt = select.appendChild( document.createElement( "option" ) );

input.type = "checkbox";

// Support: iOS<=5.1, Android<=4.2+
// Default value for a checkbox should be "on"
support.checkOn = input.value !== "";

// Support: IE<=11+
// Must access selectedIndex to make default options select
support.optSelected = opt.selected;

// Support: Android<=2.3
// Options inside disabled selects are incorrectly marked as disabled
select.disabled = true;
support.optDisabled = !opt.disabled;

// Support: IE<=11+
// An input loses its value after becoming a radio
input = document.createElement( "input" );
input.value = "t";
input.type = "radio";
support.radioValue = input.value === "t";

} )();

return support;

} );