如何訪問這些屬性？

我要去堅果試圖解析從這個JSON獲得「名」，每個「部門」的「id」屬性爲選擇：如何訪問這些屬性？

[{"division":{"name":"Solo Male","coed":false,"size":1,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-08-25T16:42:07-04:00","id":1}},{"division":{"name":"Solo Female","coed":false,"size":1,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-08-25T16:42:07-04:00","id":2}},{"division":{"name":"4 Person Male","coed":false,"size":4,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-08-25T16:42:07-04:00","id":9}},{"division":{"name":"4 Person Female","coed":false,"size":4,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-08-25T16:42:07-04:00","id":10}},{"division":{"name":"4 Person Coed","coed":true,"size":4,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-10-29T10:46:28-04:00","id":11}},{"division":{"name":"3 Person Male","coed":false,"size":3,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-08-25T16:42:07-04:00","id":6}},{"division":{"name":"3 Person Female","coed":false,"size":3,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-08-25T16:42:07-04:00","id":7}},{"division":{"name":"3 Person Coed","coed":true,"size":3,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-10-29T10:46:22-04:00","id":8}},{"division":{"name":"2 Person Male","coed":false,"size":2,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-08-25T16:42:07-04:00","id":3}},{"division":{"name":"2 Person Female","coed":false,"size":2,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-08-25T16:42:07-04:00","id":4}},{"division":{"name":"2 Person Coed","coed":true,"size":2,"created_at":"2009-08-25T16:42:07-04:00","updated_at":"2009-10-29T10:46:16-04:00","id":5}}]

這裏是我的代碼，我不能去上班：

jQuery.each(data, function(i,division) { 
$('#squad_division').append($('<option value="'+ division.id+'">'+ division.name +'</option>'));

我知道，我只是簡單的東西在那裏我試圖訪問「division.id」和「division.name」，但它躲開我。

感謝提前，如果你可以提供幫助。

乾杯

來源

2011-11-18 Danger Angell

因爲你需要改變division.id到division.division.id的JSON的結構。這裏是您的幾乎完全相同的代碼正常一個的jsfiddle：http://jsfiddle.net/RqwBT/1/

基本上您division變量是陣列（該data變量），這是一個對象內的單個鍵，且該對象具有一個屬性：division（其中有你想訪問的子屬性）。

jQuery.each(data, function(i,division) { 
    $('#squad_division').append('<option value="'+ division.division.id+'">'+ division.division.name +'</option>'); 
});

通知我刪除周圍的HTML的$()在追加聲明，因爲它是建立不必要的開銷。

我想通過在每個函數內部調用console.log(division);來解決這個問題，它允許我一次檢查單個數組鍵，以瞭解如何訪問對象的信息。這是我從新源加載JSON時的標準做法。

來源

2011-11-18 20:11:54 Jasper

EUREKA！我告訴你這是愚蠢的東西:-) –

我會了解的jsfiddle今天！再次感謝。 –

我很樂意提供幫助。如果你不熟悉如Firebug DOM檢查工具，那麼我建議你花一點時間去了解一個，它可以節省大量的時間調試代碼海量。 – Jasper

啊哈......你的界線並不師數據尚未...他們仍然（含一個部門）的數組。

您將需要：

jQuery.each(data, function(i,data_item) { 
    $('#squad_division').append($('<option value="'+ data_item.division.id+'">'+ data_item.division.name +'</option>'));

來源

2011-11-18 20:09:23

沒有骰子。當我使用division.id和division.name我正在加入到選擇欄選項標籤如預期......我只是不明白的屬性值。相反，我得到這個： <期權價值=「未定義」>未定義 –

看到編輯答案:) –

在你的代碼division（第一個，data[0]）是下列對象：

{ 
    "division": { 
    "name":"Solo Male", 
    "coed":false, 
    "size":1, 
    "created_at":"2009-08-25T16:42:07-04:00", 
    "updated_at":"2009-08-25T16:42:07-04:00", 
    "id":1 
    } 
}

所以你需要使用division.division.id和division.division.name

來源

2011-11-18 20:13:43 zzzzBov

如何訪問這些屬性？

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