Question

现在我正在使用iTunes搜索API并尝试从专辑的曲目列表的键/值对中提取数据，并将它们插入到特定的文本输入中。我能够在表格中完成this但由于应用程序当前的设置方式，它现在要求输入嵌套在一对div中。

值赋值适用于对象的键名与数据名属性匹配并插入该特定值的位置。对象的对通过.track-form div中的输入索引进行迭代。由于某种原因，迭代器似乎在第二个键/值处停止。相反，它应该按tracks对象的顺序填充行输入。

var tracks = [
  {discNumber: "01", trackNumber: "01", trackName: "Track 01"}, 
  {discNumber: "01", trackNumber: "02", trackName: "Track 02"}, 
  {discNumber: "01", trackNumber: "03", trackName: "Track 03"}, 
  {discNumber: "01", trackNumber: "04", trackName: "Track 04"}, 
  {discNumber: "01", trackNumber: "05", trackName: "Track 05"}
];

$('.track-form').each(function() {
  $(this).find('.track-input').val(function(i) {
    var dataName        = $(this).data("name"),
        camelCasedClass = toCamelCase(dataName);
    return tracks[i][camelCasedClass];
  });
  
  function toCamelCase(name) {
      var camelCase = name.replace(/-([a-z])/g, function(g) {
        return g[1].toUpperCase();
      });

      return camelCase;
  }
});

.track-container {
  display: inline-block;
}

.track-form:not(:first-of-type) {
    margin-top: 5px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

Answer 1

在错误的函数中得到你的“i” - 它总是返回0，因为它是容器中的第一个输入。试试这个：

var tracks = [
  {discNumber: "01", trackNumber: "01", trackName: "Track 01"}, 
  {discNumber: "01", trackNumber: "02", trackName: "Track 02"}, 
  {discNumber: "01", trackNumber: "03", trackName: "Track 03"}, 
  {discNumber: "01", trackNumber: "04", trackName: "Track 04"}, 
  {discNumber: "01", trackNumber: "05", trackName: "Track 05"}
];

$('.track-form').each(function(i) {

  $(this).find('.track-input').val(function() {
    var dataName        = $(this).data("name"),
        camelCasedClass = toCamelCase(dataName);
    return tracks[i][camelCasedClass];
  });
  
  function toCamelCase(name) {
      var camelCase = name.replace(/-([a-z])/g, function(g) {
        return g[1].toUpperCase();
      });

      return camelCase;
  }
});

.track-container {
  display: inline-block;
}

.track-form:not(:first-of-type) {
    margin-top: 5px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

<div class="track-form">
  <div class="track-container">
    <input type="text" class="track-input" data-name="discNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackNumber" />
  </div>
  <div class="track-container">
    <input type="text" class="track-input" data-name="trackName" />
  </div>
</div>

将值分配给散列中的特定输入

1 个答案: