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本文為大家介紹下javascript中typeof的使用，下面有個不錯的樣本，感興趣的朋友可以參考下
代碼如下:<html> <head> <title>javascript中typeof的使用</title> <script> //1、基本類型 var x = 123; var y = "abc"; var z = true; //alert(typeof x);//number //alert(typeof y);//string //alert(typeof z);//boolean //2、參考型別，類型是object var arr = new Array(); var date = new Date(); var str = new String("abc"); //alert(typeof arr);//object //alert(typeof date);//object //alert(typeof str);//object //3、物件類型，可以理解為javascript中的類的類比是通過function來實現的 alert(typeof Array);//function alert(typeof Date);//function alert(typeof String);//function </script> </head> <body> </body> </html>Start building with 50+ products and up to 12 months usage for Elastic Compute Service
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