support.js
641 Bytes
define([
"../var/support"
], function( support ) {
(function() {
var i, eventName,
div = document.createElement( "div" );
// Support: IE<9 (lack submit/change bubble), Firefox 23+ (lack focusin event)
for ( i in { submit: true, change: true, focusin: true }) {
eventName = "on" + i;
if ( !(support[ i + "Bubbles" ] = eventName in window) ) {
// Beware of CSP restrictions (https://developer.mozilla.org/en/Security/CSP)
div.setAttribute( eventName, "t" );
support[ i + "Bubbles" ] = div.attributes[ eventName ].expando === false;
}
}
// Null elements to avoid leaks in IE.
div = null;
})();
return support;
});