将数组添加到对象中

Question

将数组添加到对象中

12

我正在尝试对 JSON 进行两次循环: 第一次是遍历父元素，第二次是获取更详细的信息。(最终将导出为 XML) 与此同时，我该如何向一个对象添加数组? 我当前的代码没有创建 XMLObjectDetail。

 XMLObject = {};
 var XMLObjectDetail = [];

 $.each(data, function(index, element) {
        XMLObject.CardCode = element['CardCode'] 
        XMLObject.CardName = element['CardName'];
        console.log(XMLObject);

  $.each(element, function(key, value) { 
       XMLObject[[XMLObjectDetail.InvPayAmnt]] = value['InvPayAmnt']; 
      });
  });

- MG1

你想把对象添加到数组中还是相反的方式？ - Bergi

我想将数组XMLObjectDetail添加到对象XMLObject中。 - MG1

在XMLObject中，应该获取哪个属性名称？ - Bergi

2个回答

3

如果你想将XMLObject添加到数组XMLObjectDetail中，请按照以下方式操作：

var XMLObject, XMLObjectDetail = [];

 $.each(data, function(index, element) {
        XMLObject=new Object(); //or XMLObject = {};
        XMLObject.CardCode = element['CardCode'] 
        XMLObject.CardName = element['CardName'];
        console.log(XMLObject);

        XMLObjectDetail.push(XMLObject);//ADDED OBJECT TO ARRAY

      //DON'T KNOW WHAT ARE YOU TRYING TO DO HERE?
      $.each(element, function(key, value) { 
           XMLObjectDetail[[XMLObjectDetail.InvPayAmnt]] = value['InvPayAmnt']; 
      });
  });

- TheVillageIdiot

抱歉，我进行了更正。我正在尝试创建一个包含数组的对象。XMLObject是主对象，XMLObjectDetail是我在第二个循环中分配值的数组。XMLObjectDetail需要位于XMLObject内部。 - MG1

你的对象图是什么样子的？或者说你的数组结构是怎样的？在第一个$.each结构中，data是否包含多个element对象？element是一个对象还是一个数组（即data是一个element数组的数组）？ - TheVillageIdiot

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- Bergi · Accepted Answer

在您在评论中澄清了您的请求之后，解决方案就很容易：

var XMLObject = {};
var XMLObjectDetail = [];
XMLObject["XMLObjectDetail"] = XMLObjectDetail;

你可以将其缩短为：

var XMLObjectDetail, XMLObject = {XMLObjectDetail: XMLObjectDetail = []};

然而，我需要提到你的代码存在一些严重的缺陷：

XMLObject = {}; // no var keyword: the variable will be global
var XMLObjectDetail = [];

$.each(data, function(index, element) {
    // I don't know how your data object/array looks like, but your code will be 
    // executed many times
    // For each element, you will overwrite the properties
    XMLObject.CardCode = element['CardCode'] // missing semicolon
    XMLObject.CardName = element['CardName'];
    // so that the final XMLObject will only contain cardcode and -name of the last one
    // It will depend on your console whether you see different objects
    // or the same object reference all the time
    console.log(XMLObject);

    // This part is completey incomprehensible
    // you now loop over the properties of the current element, e.g. CardCode
    $.each(element, function(key, value) { 
        // and again you only overwrite the same property all the time
        XMLObject[[XMLObjectDetail.InvPayAmnt]] = value['InvPayAmnt'];
        // but wait: The property name you try to set is very, um, interesting.
        // first, XMLObjectDetail is still an (empty) Array and has 
        //  no 'InvPayAmnt' property - leads to a undefined
        // then, you build an Array with that [undefined] value as the only item
        // OMG, an array? JavaScript does only allow strings as property names,
        //  so the array will be converted to a string - resulting to the empty string ""
    });
});