为DataTables aoColumnDefs创建JavaScript数组（JSON格式） [英] Create JavaScript array (JSON format) for DataTables aoColumnDefs

问题描述

我想为DataTables参数aoColumnDefs创建以下JSON数据：

  var aryJSONColTable = [
 {sTitle：Column00，aTargets：[0]}，
 {sTitle：Column01，aTargets：[1]}，
 {sTitle Column02，aTargets：[2]}，
 {sTitle：Column03，aTargets：[3]} 
] 
  / pre> 
 
 
然后我将把变量放入我的DataTable变量声明中，如下所示：
 code> var oTable = $（'＃report'）。dataTable（{
aoColumnDefs：aryJSONColTable，
bProcessing：true，
bServerSide：true，
bLengthChange：true，
bFilter：true，
aaSorting：[[3，desc]] 
sScrollX：100％，
bScrollCollapse：true，
bJQueryUI：true，
sAjaxSource：./getDataEA.php
}）; 
  
根据这个有用的讨论，我试过一个JavaScript循环来创建JSON数据aryJSONColTable如下：
 
 
 $ a 
 var aryColTableChecked = [column00，column01，column02，column03];创建JSON数组为aoColumnDefs 
 
 var aryJSONColTable = []; 
 
 for（var i in aryColTableChecked）{
 aryJSONColTable.push（{
sTitle：aryColTableChecked [i]，
aTargets：[i] 
}）; 
}; 
  

我总是获得价值 1 用于数据aTargets，来自上述JavaScript循环，我希望获得数据aTargets的值[running_index_number] / p>

请在此事上协助我。谢谢你提前。

解决方案

for ... in 对象不是数组，而 aryColTableChecked 是一个数组。你可以这样做：

  var arr = []; 
 var max = 3; （0 = 0，n; i <= max; i ++）{
 n = i> 9？ ''+ i：'0'+ i; //确保它有2位数
 arr.push（{
 sTitle：'Column'+ n，
 aTargets：[i] //为什么数组在这里？
}） ; 
} 
  

I'd like to create the following JSON data for DataTables parameter aoColumnDefs:

var aryJSONColTable = [
                        {"sTitle": "Column00", "aTargets": [0]},
                        {"sTitle": "Column01", "aTargets": [1]},
                        {"sTitle": "Column02", "aTargets": [2]},
                        {"sTitle": "Column03", "aTargets": [3]}
                      ]

Then I will put the variable into my DataTable variable declaration like following:

var oTable = $('#report').dataTable({
                                "aoColumnDefs": aryJSONColTable,
                                "bProcessing": true,
                                "bServerSide": true,
                                "bLengthChange": true,
                                "bFilter": true,
                                "aaSorting": [[ 3, "desc" ]],
                                "sScrollX": "100%",
                                "bScrollCollapse": true,
                                "bJQueryUI": true,
                                "sAjaxSource": "./getDataEA.php"
                            });

Based on this useful discussion, I have tried a JavaScript loop to create the JSON data aryJSONColTable as follow:

//create JSON array for aoColumnDefs
var aryColTableChecked = ["column00", "column01", "column02", "column03"];
var aryJSONColTable = [];

for (var i in aryColTableChecked) {
    aryJSONColTable.push({
                      "sTitle": aryColTableChecked[i],
                      "aTargets": [i]
                    });
};

I always get value "1" for data "aTargets" from above JavaScript loop, which I wish to get value [running_index_number] for data "aTargets".

Please kindly assist me on this matter. Thank you in advance.

解决方案

for...in is for objects not arrays and aryColTableChecked is an array. You can do it like this:

var arr = [];
var max = 3; // zero based
for (var i = 0, n; i <= max; i++) {
    n = i > 9 ? '' + i : '0' + i; // make sure it has 2 digits
    arr.push({
        sTitle: 'Column' + n,
        aTargets: [i] // why array here?            
    });
}

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