Function safeActiveElement

static/wangEditor/js/lib/jquery-2.2.1.js:4435–4439

()

// Support: IE9
// See #13393 for more info
function safeActiveElement() {
	try {
		return document.activeElement;
	} catch ( err ) { }
}

function on( elem, types, selector, data, fn, one ) {
	var origFn, type;