使用Javascript將Json數組轉換爲數組

Question

我想從下面的Json數據數組中生成一個csv。

var keyDistribution = [ 
         [ 
          { 
           "port": 4444, 
           "ipAddress": "52.35.15.121", 
            "noOfKeys": 1 
           }, 
           { 
            "port": 2222, 
            "ipAddress": "52.35.15.121", 
            "noOfKeys": 1 
           }, 
           { 
            "port": 3333, 
            "ipAddress": "52.35.15.121", 
            "noOfKeys": 0 
           } 
           ] 
          ]; 

我該如何做到這一點？

我知道如何從陣列生成CSV作爲初級講座：

var data = [["name1", "city1", "some other info"], ["name2", "city2", "more info"]]; 
     var csvContent = "data:text/csv;charset=utf-8,"; 
     keyDistribution.forEach(function(infoArray, index){ 

      dataString = infoArray.join(","); 
      csvContent += index < data.length ? dataString+ "\n" : dataString; 

     }); 
     var encodedUri = encodeURI(csvContent); 
     window.open(encodedUri); 
     var encodedUri = encodeURI(csvContent); 
     var link = document.createElement("a"); 
     link.setAttribute("href", encodedUri); 
     link.setAttribute("download", "my_data.csv"); 

     link.click(); 

但可以有一個人請幫我我怎麼能生成JSON數據（keyDistribution變量）數組這些數據？

我想在格式輸出：

[["port": 4444, "ipAddress": "52.35.15.121","noOfKeys": 1], ["port": 2222, "ipAddress": "52.35.15.121", "noOfKeys": 1]...]; 

編輯 我只是想在列標題的要求。

Answer 1

所有你需要的是這個數組對象數組的迭代，就像這樣：

var csvContent = "data:text/csv;charset=utf-8,"; 

// Iterating through 0th index element as it contains all the objects 
keyDistribution[0].forEach(function (infoArray, index) { 

    // Fetching all keys of a single object 
    var _keys = Object.keys(infoArray); 
    var dataString = []; 

    if(index==0){ 
    [].forEach.call(_keys, function(inst, i){ 
     dataString.push(inst); 
    }); 
    dataString = dataString.join(","); 
    csvContent += index < keyDistribution[0].length ? dataString + "\n" : dataString; 
    dataString = []; 
    } 

    [].forEach.call(_keys, function(inst, i){ 
    dataString.push(infoArray[inst]); 
    }); 

    // From here the code is same. 
    dataString = dataString.join(","); 
    csvContent += index < keyDistribution[0].length ? dataString + "\n" : dataString; 

}); 
var encodedUri = encodeURI(csvContent); 
window.open(encodedUri); 
var encodedUri = encodeURI(csvContent); 
var link = document.createElement("a"); 
link.setAttribute("href", encodedUri); 
link.setAttribute("download", "my_data.csv"); 

link.click();