如何使用jquery訪問多維數組中的數據？

我正在使用ajax調用服務器並獲取一些用戶數據。服務器返回格式化像下面的數組：如何使用jquery訪問多維數組中的數據？

array:6 [▼ 
    0 => array:17 [▼ 
    "id" => 334 
    "provider" => "some_provider" 
    "option_id" => "x124223" 
    "option_title" => "title" 
    "api_parameter" => "parameter" 
    "chart_title" => "title" 
    "chart_color" => "#6a76fc" 
    "chart_target" => "2220" 
    "chart_type" => "line" 
    "chart_size" => "4" 
    "chart_data" => array:7 [▼ 
     239 => array:2 [▼ 
     "data" => 2114 
     "created_at" => "14/August" 
     ] 
     240 => array:2 [▼ 
     "data" => 2114 
     "created_at" => "15/August" 
     ] 
     241 => array:2 [▶] 
     242 => array:2 [▶] 
     243 => array:2 [▶] 
     244 => array:2 [▶] 
     245 => array:2 [▶] 
    ] 
    "average" => 2122.0 
    "current" => array:2 [▶] 
    "last" => array:2 [▶] 
    "current_status_icon" => "md-trending-neutral" 
    "current_status_color" => "#3DDCF7" 
    "status_message" => "hmm... The needle didnt move." 
    ] 
    1 => array:17 [▼ 
    "id" => 345 
    "provider" => "some_other_provider" 
    "option_id" => "x124" 
    "option_title" => "Title" 
    "api_parameter" => "parameter" 
    "chart_title" => "title" 
    "chart_color" => "#6A76FC" 
    "chart_target" => "Set a target" 
    "chart_type" => "line" 
    "chart_size" => "4" 
    "chart_data" => array:7 [▼ 
     202 => array:2 [▼ 
     "data" => 5 
     "created_at" => "13/August" 
     ] 
     203 => array:2 [▼ 
     "data" => 5 
     "created_at" => "14/August" 
     ] 
     204 => array:2 [▶] 
     205 => array:2 [▶] 
     206 => array:2 [▶] 
     207 => array:2 [▶] 
     208 => array:2 [▶] 
    ] 
    "average" => 5.0 
    "current" => array:2 [▼ 
     "data" => 5 
     "created_at" => "16/August" 
    ] 
    "last" => array:2 [▼ 
     "data" => 5 
     "created_at" => "16/August" 
    ] 
    "current_status_icon" => "md-trending-neutral" 
    "current_status_color" => "#3DDCF7" 
    "status_message" => "hmm... The needle didnt move." 
    ]

然後我嘗試使用foreach循環

$.ajax({url: "/url/to/server", success: function(result){ 
    result.forEach(function(item) { 
     console.log(item['chart_data']['data']); 
    }); 
    }, complete: function() { 
     // Schedule the next request when the current one's complete 
     setTimeout(checkForUpdates, 3000); 
    } 
    }); 
});

在陣列中訪問數據，但是這只是記錄undefined。我如何訪問嵌套在每個頂級數組中的chart_data？

來源

2016-08-21 kevinabraham

您需要訪問嵌套數組：'chart_data'是一個數組，它具有有'data'屬性元素。所以你需要另一個嵌套循環 – trincot

@trincot謝謝我試過這個。我得到一個錯誤，讀取'未捕獲的TypeError：item.chart_data.forEach不是函數' – kevinabraham

JSON輸出來自哪裏？ PHP？語法不正確。如果你在你的問題中包含你在執行'console.log（JSON.stringify（result））'時得到的輸出將會很有用。這樣我們將看到正確的JSON。 – trincot

您的數據結構並不清晰，因爲您共享的結構是以PHP表示法輸出的，並不代表您在JavaScript中接收到的JSON。

但我的猜測是，這將工作：

result.forEach(function(item) { 
    Object.keys(item.chart_data).forEach(function (key) { 
     console.log(item.chart_data[key].data); 
    }); 
});

來源

2016-08-21 12:52:33 trincot

非常感謝@trincot這工作。 – kevinabraham

如何使用jquery訪問多維數組中的數據？

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