DataTables：通过循环动态创建列属性

Question

我已经成功实现了DataTables（版本1.10+）插件，我使用以下代码片段来定义列：

"columns": [
  {"width" : "25%", "orderSequence": [ "desc", "asc" ]},
  {"width" : "25%", "orderSequence": [ "desc", "asc" ]},
  {"width" : "25%", "orderSequence": [ "desc", "asc" ]},
  {"width" : "25%", "orderSequence": [ "desc", "asc" ]}
],

我现在的问题是我总是要为我在表格中使用的列数定义这些属性。在这里，我有4列，因此有4个属性。由于我想将我的代码用于多个表，但是使用不同数量的列，我希望在列数量的基础上通过循环动态创建这个代码块。

这一般是否可行，并且有人可能有解决方案吗？任何帮助表示赞赏!!

Answer 1

function DataTableRowsDefs(columnCount)
{
   // create the object and the 1st row
   var cols = "columns" : [{"width" : "25%", "orderSequence": [ "desc", "asc" ]}];

   // repeat for every element after that
   for (i = 1; i < columnCount; i++) { 
      cols.columns.push({"width" : "25%", "orderSequence": [ "desc", "asc" ]});
   }

   // return array
   return cols;  
}

// call function:
DataTableRowsDefs(4);

修改

  

更正了冗余

function DataTableRowsDefs(columnCount) {

  // create a single column
  var column = {
    "width": "25%",
    "orderSequence": ["desc", "asc"]
  };

  // create the object and add the 1st column
  var jsonColumns = {
    "columns": [column]
  };

  // repeat for every column after that
  for (i = 1; i < columnCount; i++) {
    jsonColumns.columns.push(column);
  }

  // return array
  return(jsonColumns);
}

// call function:
DataTableRowsDefs(4);