快速學習javascript對象-遍歷對象

爲了方便了解每一個javascript對象包含的方法，我寫一個函數。

 1 function GetCollection(obj){
 2     try{
 3         if(obj){
 4             var sType="";
 5             var sMessage="";
 6             for (var i in obj){
 7                 if(obj[i] ===null || obj[i] === undefined){
 8                     sType="i";
 9                     sMessage += "\r\n" + i;
10                 }
11                 else{
12                     var c = obj[i];
13                     if(c.name && c.value){
14                         sMessage += "\r\n" + (c.name + ":" + c.value);
15                         sType="name:value";
16                     }
17                     else{
18                         sMessage += "\r\n" + (i + "=" + obj[i]);
19                         sType="obj[i]";
20                     }
21                 }
22             }
23             sMessage += "\r\n" + ("sType:"+sType);
24             alert(sMessage);
25         }
26     }
27     catch(err){
28         alert("err:" + err.message);
29     }
30 }

View Code

好比查看location的全部方法和值，能夠經過下面js調用

GetCollection(location);

彈出界面以下：

 

也能夠查看某個json的內容：    var json ={"name":"張三","depart":"銷售部","skill":["java","c++","PHP","c#"]};
    GetCollection(json);

查看數組內容：   

　 var arry =["1","5","c"];
    GetCollection(arry);