src/browser/ui/validation.js
function($node,val){
					var valAsNumber = $node.prop('valueAsNumber');
					return !( (valAsNumber && (val=valAsNumber)) || ( /^-?[0-9]+(\.[0-9]*)?(E(-|\+)?[0-9]+)?$/i.test(val) && ((val=parseInt(val,10))!==NaN)))
						|| checkMinAndMax($node,val,function(v){ return parseInt(v,10); });
				}
function($node,val){
					var valAsNumber = $node.prop('valueAsNumber');
					return !( (valAsNumber && (val=valAsNumber)) || ( /^-?[0-9]+(\.[0-9]*)?(E(-|\+)?[0-9]+)?$/i.test(val) && ((val=parseInt(val,10))!==NaN)))
						|| checkMinAndMax($node,val,function(v){ return parseInt(v,10); });
				}
http://www.w3.org/TR/html5/common-microsyntaxes.html#valid-week-string /*week:(function(){

})(), http://www.w3.org/TR/html5/common-microsyntaxes.html#real-numbers