無法JSON對象

Question

我使用Facebook的Javascript SDK來獲得的收件箱的郵件，到目前爲止，我能得到他們，這將轉化爲一個JSON對象

function getMsgs() { FB.api( "/me/inbox", function (response) { if (response && !response.error) { var result = JSON.stringify(response); document.getElementById("msgs").innerHTML="<pre>"+result+"</pre>"; } } ); } 什麼就得到一個特定的值我最終得到的是這樣的：

 

{ 
    "data":[ 
     { 
     "id":"15986833470221166", 
     "to":{ 
      "data":[ 
       { 
        "id":"7888047207869023", 
        "name":"My Name" 
       }, 
       { 
        "id":"101530783476778608", 
        "name":"Friend Name" 
       } 
      ] 
     }, 
     "updated_time":"2015-02-08T03:09:02+0000", 
     "unread":5, 
     "unseen":0, 
     "comments":{ 
      "data":[ 
       { 
        "id":"159268645347021166_1421118060", 
        "from":{ 
        "id":"7888047207869023", 
        "name":"My Name" 
        }, 
        "message":"blah blah blah", 
        "created_time":"2015-01-13T03:01:00+0000" 
       }, 
       { 
        "id":"159268645347021166_1421118060", 
        "from":{ 
        "id":"7888047207869023", 
        "name":"My Name" 
        }, 
        "message":"blah blah blah", 
        "created_time":"2015-01-13T03:01:16+0000" 
       }, 
       { 
        "id":"159268645347021166_1421118060", 
        "from":{ 
        "id":"101530783476778608", 
        "name":"Friend Name" 
        }, 
        "message":"blah blah blah", 
        "created_time":"2015-01-13T03:01:23+0000" 
       }, 
       { 
        "id":"159268645347021166_1421118060", 
        "from":{ 
        "id":"101530783476778608", 
        "name":"Friend Name" 
        }, 
        "message":"blah blah blah", 
        "created_time":"2015-01-13T03:01:30+0000" 
       }, 
       { 
        "id":"159268645347021166_1421118060", 
        "from":{ 
        "id":"101530783476778608", 
        "name":"Friend Name" 
        }, 
        "message":"blah blah blah", 
        "created_time":"2015-02-08T03:09:02+0000" 
       } 
      ], 
      "paging":{ 
       "previous":"https://graph.facebook.com/v2.2/15986453474543021166/comments?access_token=TOKEN&limit=25&since=1423364314942&__paging_token=TOKEN&__previous=1", 
       "next":"https://graph.facebook.com/v2.2/15986453474543021166/comments?access_token=TOKEN&limit=25&until=142111148324060&__paging_token=TOEKN" 
      } 
     } 
     } 

我想訪問'消息'值。我想創建一個數組來存儲這個JSON結構中的每個消息值。

Answer 1

如果你只需要得到的消息，你可以用

if (response && !response.error) { 
     var m=null 
      , result=JSON.stringify(response) 
      , re=/"message":"([^"]+)"/g 
      , messages=[]; 
     while(m=re.exec(result)) { 
      messages.push(m[1]); 
     } 
     // messages array should now hold all the values by key "message" 
     //console.log(messages); 
    } 

Answer 2

根據您所提供的json，你可以做這樣的事情：

// loop through the comments array 
for (var i = 0 ; i < json.data[0].comments.data.length; i++) 
{ 
    var d = json.data[0].comments.data[i]; 
    // codes here. Message is d.message 

} 

SAMPLE