1 <script language="javascript" type="text/javascript"> 2 alert(new String('a')==='a'); //true 3 alert(Function instanceof Object);//true 4 alert(NaN!==NaN); //true 5 alert(typeof []==='Object'); //false 6 </script> 7 8 <script language="javascript" type="text/javascript"> 9 alert(new String('a')==='a'); //true 10 alert(Function instanceof Function);//true 11 alert(NaN!==NaN); //true 12 alert(typeof []==='object'); //true 13 14 alert(typeof(typeof [])==='string');//true 15 </script>
注意:Function instanceof Object/Function instanceof Function都是true;typeof返回的值是String类型并且全部是小写的,所以typeof []==='Object'返回的是false