根据之前的下拉选择显示第二个下拉列表

Question

首先，我讨厌提出已经处理过的问题，但你应该知道我在这个网站上找到的其他选项对我不起作用。

基本上，我想构建一个有两个下拉框的简短形式。第一个始终显示，第二个默认隐藏。当选择第一个下拉框中的某个选项时，我想要显示第二个下拉框。这是我的意思的完美例子：

http://jsfiddle.net/whkQw/20/

然而，与上面的示例不同，我有一组单独的选项显示在第一个下拉框中选择的EACH选项的下拉框中，而不仅仅是其中一个选项。换句话说，在上面的示例中，如果选择“中国”，将出现第二个下拉框，但如果您选择其他任何内容，它将保持隐藏状态。那不是我想要的。如果您选择“台湾”，我想要显示不同的下拉列表，如果您为每个选项选择了“德国”等，则需要显示不同的下拉列表。我尝试在每个选项中简单地复制该示例中的javascript，相应地更改名称标签，但是这不起作用（当涉及到Javascript时我是新手）。

所以我遇到了这个例子，这正是我要找的东西：

http://jsfiddle.net/e9XvP/

但由于某种原因，这段代码似乎对我不起作用。它完全没有效果;无论选择什么，第二个下拉列表都会保持隐藏状态。我的下拉列表比上例中的下拉列表要多得多且冗长。这是我现在的HTML：

下拉1

<div class="ccms_form_element cfdiv_custom" id="style_container_div">
<label>Choose Rank: </label><select size="1" id="Rank" class=" validate['required']" title="" type="select" name="Rank">
    <option value="">-Select Your Rank-</option>
    <option value="Airman">Airman</option>
    <option value="Airman First Class">Airman First Class</option>
    <option value="Senior Airman">Senior Airman</option>
    <option value="Staff Sergeant">Staff Sergeant</option>
    <option value="Senior Master Sergeant">Senior Master Sergeant</option>
</select><div class="clear"></div><div id="error-message-style"></div></div>

下拉2：

<div id="Airman"  class="style-sub-1"  style="display: none;" name="stylesub1" onchange="ChangeDropdowns(this.value)">
  <label>Which Job? </label>
    <select id="Airman" name="Airman">
      <option value="">-Choose A Job-</option>
      <option value="Basic Ore Miner - Level 1a">Basic Ore Miner - Level 1</option>
      <option value="Basic Ore Miner - Level 2a">Basic Ore Miner - Level 2</option>
      <option value="Basic Ore Miner - Level 3a">Basic Ore Miner - Level 3</option>
      <option value="Basic Ore Miner - Level 4a">Basic Ore Miner - Level 4</option>
      <option value="Basic Ore Miner - Level 5a">Basic Ore Miner - Level 5</option>
      <option value="Basic Ore Miner - Level 6a">Basic Ore Miner - Level 6</option>
      <option value="Basic Ore Miner - Level 7a">Basic Ore Miner - Level 7</option>
      <option value="Plagioclase Miner - Level 1a">Plagioclase Miner - Level 1</option>
      <option value="Plagioclase Miner - Level 2a">Plagioclase Miner - Level 2</option>
      <option value="Plagioclase Miner - Level 3a">Plagioclase Miner - Level 3</option>
      <option value="Plagioclase Miner - Level 4a">Plagioclase Miner - Level 4</option>
      <option value="Plagioclase Miner - Level 5a">Plagioclase Miner - Level 5</option>
      <option value="Plagioclase Miner - Level 6a">Plagioclase Miner - Level 6</option>
      <option value="Plagioclase Miner - Level 7a">Plagioclase Miner - Level 7</option>
      <option value="Omber Miner - Level 1a">Omber Miner - Level 1</option>
      <option value="Omber Miner - Level 2a">Omber Miner - Level 2</option>
      <option value="Omber Miner - Level 3a">Omber Miner - Level 3</option>
      <option value="Omber Miner - Level 4a">Omber Miner - Level 4</option>
      <option value="Omber Miner - Level 5a">Omber Miner - Level 5</option>
      <option value="Omber Miner - Level 6a">Omber Miner - Level 6</option>
      <option value="Omber Miner - Level 7a">Omber Miner - Level 7</option>
      <option value="lvl-1 Mission Runner - Level 1a">lvl-1 Mission Runner - Level 1</option>
      <option value="lvl-1 Mission Runner - Level 2a">lvl-1 Mission Runner - Level 2</option>
      <option value="lvl-1 Mission Runner - Level 3a">lvl-1 Mission Runner - Level 3</option>
      <option value="lvl-1 Mission Runner - Level 4a">lvl-1 Mission Runner - Level 4</option>
      <option value="lvl-1 Mission Runner - Level 5a">lvl-1 Mission Runner - Level 5</option>
      <option value="lvl-1 Mission Runner - Level 6a">lvl-1 Mission Runner - Level 6</option>
      <option value="lvl-1 Mission Runner - Level 7a">lvl-1 Mission Runner - Level 7</option>
      <option value="lvl-2 Mission Runner - Level 1a">lvl-2 Mission Runner - Level 1</option>
      <option value="lvl-2 Mission Runner - Level 2a">lvl-2 Mission Runner - Level 2</option>
      <option value="lvl-2 Mission Runner - Level 3a">lvl-2 Mission Runner - Level 3</option>
      <option value="lvl-2 Mission Runner - Level 4a">lvl-2 Mission Runner - Level 4</option>
      <option value="lvl-2 Mission Runner - Level 5a">lvl-2 Mission Runner - Level 5</option>
      <option value="lvl-2 Mission Runner - Level 6a">lvl-2 Mission Runner - Level 6</option>
      <option value="lvl-2 Mission Runner - Level 7a">lvl-2 Mission Runner - Level 7</option>
      <option value="lvl-3 Mission Runner - Level 1a">lvl-3 Mission Runner - Level 1</option>
      <option value="lvl-3 Mission Runner - Level 2a">lvl-3 Mission Runner - Level 2</option>
      <option value="lvl-3 Mission Runner - Level 3a">lvl-3 Mission Runner - Level 3</option>
      <option value="lvl-3 Mission Runner - Level 4a">lvl-3 Mission Runner - Level 4</option>
      <option value="lvl-3 Mission Runner - Level 5a">lvl-3 Mission Runner - Level 5</option>
      <option value="lvl-3 Mission Runner - Level 6a">lvl-3 Mission Runner - Level 6</option>
      <option value="lvl-3 Mission Runner - Level 7a">lvl-3 Mission Runner - Level 7</option>
      <option value="lvl-4 Mission Runner - Level 1a">lvl-4 Mission Runner - Level 1</option>
      <option value="lvl-4 Mission Runner - Level 2a">lvl-4 Mission Runner - Level 2</option>
      <option value="lvl-4 Mission Runner - Level 3a">lvl-4 Mission Runner - Level 3</option>
      <option value="lvl-4 Mission Runner - Level 4a">lvl-4 Mission Runner - Level 4</option>
      <option value="lvl-4 Mission Runner - Level 5a">lvl-4 Mission Runner - Level 5</option>
      <option value="lvl-4 Mission Runner - Level 6a">lvl-4 Mission Runner - Level 6</option>
      <option value="lvl-4 Mission Runner - Level 7a">lvl-4 Mission Runner - Level 7</option>
    </select>
</div>
<div id="Airman First Class"  class="style-sub-1"  style="display: none;" name="stylesub1" onchange="ChangeDropdowns(this.value)">
  <label>Which Job? </label>
    <select id="Airman First Class" name="Airman First Class">
    <option value="">-Choose A Job-</option>
      <option value="Basic Ore Miner - Level 1b">Basic Ore Miner - Level 1</option>
      <option value="Basic Ore Miner - Level 2b">Basic Ore Miner - Level 2</option>
      <option value="Basic Ore Miner - Level 3b">Basic Ore Miner - Level 3</option>
      <option value="Basic Ore Miner - Level 4b">Basic Ore Miner - Level 4</option>
      <option value="Basic Ore Miner - Level 5b">Basic Ore Miner - Level 5</option>
      <option value="Basic Ore Miner - Level 6b">Basic Ore Miner - Level 6</option>
      <option value="Basic Ore Miner - Level 7b">Basic Ore Miner - Level 7</option>
      <option value="Plagioclase Miner - Level 1b">Plagioclase Miner - Level 1</option>
      <option value="Plagioclase Miner - Level 2b">Plagioclase Miner - Level 2</option>
      <option value="Plagioclase Miner - Level 3b">Plagioclase Miner - Level 3</option>
      <option value="Plagioclase Miner - Level 4b">Plagioclase Miner - Level 4</option>
      <option value="Plagioclase Miner - Level 5b">Plagioclase Miner - Level 5</option>
      <option value="Plagioclase Miner - Level 6b">Plagioclase Miner - Level 6</option>
      <option value="Plagioclase Miner - Level 7b">Plagioclase Miner - Level 7</option>
      <option value="Omber Miner - Level 1b">Omber Miner - Level 1</option>  
      <option value="Omber Miner - Level 2b">Omber Miner - Level 2</option>
      <option value="Omber Miner - Level 3b">Omber Miner - Level 3</option>
      <option value="Omber Miner - Level 4b">Omber Miner - Level 4</option>
      <option value="Omber Miner - Level 5b">Omber Miner - Level 5</option>
      <option value="Omber Miner - Level 6b">Omber Miner - Level 6</option>
      <option value="Omber Miner - Level 7b">Omber Miner - Level 7</option>
      <option value="lvl-1 Mission Runner - Level 1b">lvl-1 Mission Runner - Level 1</option>
      <option value="lvl-1 Mission Runner - Level 2b">lvl-1 Mission Runner - Level 2</option>
      <option value="lvl-1 Mission Runner - Level 3b">lvl-1 Mission Runner - Level 3</option>
      <option value="lvl-1 Mission Runner - Level 4b">lvl-1 Mission Runner - Level 4</option>
      <option value="lvl-1 Mission Runner - Level 5b">lvl-1 Mission Runner - Level 5</option>
      <option value="lvl-1 Mission Runner - Level 6b">lvl-1 Mission Runner - Level 6</option>
      <option value="lvl-1 Mission Runner - Level 7b">lvl-1 Mission Runner - Level 7</option>
      <option value="lvl-2 Mission Runner - Level 1b">lvl-2 Mission Runner - Level 1</option>
       <option value="lvl-2 Mission Runner - Level 2b">lvl-2 Mission Runner - Level 2</option>
       <option value="lvl-2 Mission Runner - Level 3b">lvl-2 Mission Runner - Level 3</option>
       <option value="lvl-2 Mission Runner - Level 4b">lvl-2 Mission Runner - Level 4</option>
       <option value="lvl-2 Mission Runner - Level 5b">lvl-2 Mission Runner - Level 5</option>
       <option value="lvl-2 Mission Runner - Level 6b">lvl-2 Mission Runner - Level 6</option>
       <option value="lvl-2 Mission Runner - Level 7b">lvl-2 Mission Runner - Level 7</option>
      <option value="lvl-3 Mission Runner - Level 1b">lvl-3 Mission Runner - Level 1</option>
       <option value="lvl-3 Mission Runner - Level 2b">lvl-3 Mission Runner - Level 2</option>
       <option value="lvl-3 Mission Runner - Level 3b">lvl-3 Mission Runner - Level 3</option>
       <option value="lvl-3 Mission Runner - Level 4b">lvl-3 Mission Runner - Level 4</option>
       <option value="lvl-3 Mission Runner - Level 5b">lvl-3 Mission Runner - Level 5</option>
       <option value="lvl-3 Mission Runner - Level 6b">lvl-3 Mission Runner - Level 6</option>
       <option value="lvl-3 Mission Runner - Level 7b">lvl-3 Mission Runner - Level 7</option>
      <option value="lvl-4 Mission Runner - Level 1b">lvl-4 Mission Runner - Level 1</option>
       <option value="lvl-4 Mission Runner - Level 2b">lvl-4 Mission Runner - Level 2</option>
       <option value="lvl-4 Mission Runner - Level 3b">lvl-4 Mission Runner - Level 3</option>
       <option value="lvl-4 Mission Runner - Level 4b">lvl-4 Mission Runner - Level 4</option>
       <option value="lvl-4 Mission Runner - Level 5b">lvl-4 Mission Runner - Level 5</option>
       <option value="lvl-4 Mission Runner - Level 6b">lvl-4 Mission Runner - Level 6</option>
       <option value="lvl-4 Mission Runner - Level 7b">lvl-4 Mission Runner - Level 7</option>
    </select>
</div>
<div id="Senior Airman"  class="style-sub-1"  style="display: none;" name="stylesub1" onchange="ChangeDropdowns(this.value)">
  <label>Which Job? </label>
    <select id="Senior Airman" name="Senior Airman">
    <option value="">-Choose A Job-</option>
      <option value="Basic Ore Miner - Level 1c">Basic Ore Miner - Level 1</option>
       <option value="Basic Ore Miner - Level 2c">Basic Ore Miner - Level 2</option>
       <option value="Basic Ore Miner - Level 3c">Basic Ore Miner - Level 3</option>
       <option value="Basic Ore Miner - Level 4c">Basic Ore Miner - Level 4</option>
       <option value="Basic Ore Miner - Level 5c">Basic Ore Miner - Level 5</option>
       <option value="Basic Ore Miner - Level 6c">Basic Ore Miner - Level 6</option>
       <option value="Basic Ore Miner - Level 7c">Basic Ore Miner - Level 7</option>
       <option value="Plagioclase Miner - Level 1c">Plagioclase Miner - Level 1</option>
       <option value="Plagioclase Miner - Level 2c">Plagioclase Miner - Level 2</option>
       <option value="Plagioclase Miner - Level 3c">Plagioclase Miner - Level 3</option>
       <option value="Plagioclase Miner - Level 4c">Plagioclase Miner - Level 4</option>
       <option value="Plagioclase Miner - Level 5c">Plagioclase Miner - Level 5</option>
       <option value="Plagioclase Miner - Level 6c">Plagioclase Miner - Level 6</option>
       <option value="Plagioclase Miner - Level 7c">Plagioclase Miner - Level 7</option>
       <option value="Omber Miner - Level 1c">Omber Miner - Level 1</option>  
       <option value="Omber Miner - Level 2c">Omber Miner - Level 2</option>
       <option value="Omber Miner - Level 3c">Omber Miner - Level 3</option>
       <option value="Omber Miner - Level 4c">Omber Miner - Level 4</option>
       <option value="Omber Miner - Level 5c">Omber Miner - Level 5</option>
       <option value="Omber Miner - Level 6c">Omber Miner - Level 6</option>
       <option value="Omber Miner - Level 7c">Omber Miner - Level 7</option>
       <option value="lvl-1 Mission Runner - Level 1c">lvl-1 Mission Runner - Level 1</option>
       <option value="lvl-1 Mission Runner - Level 2c">lvl-1 Mission Runner - Level 2</option>
       <option value="lvl-1 Mission Runner - Level 3c">lvl-1 Mission Runner - Level 3</option>
       <option value="lvl-1 Mission Runner - Level 4c">lvl-1 Mission Runner - Level 4</option>
       <option value="lvl-1 Mission Runner - Level 5c">lvl-1 Mission Runner - Level 5</option>
       <option value="lvl-1 Mission Runner - Level 6c">lvl-1 Mission Runner - Level 6</option>
       <option value="lvl-1 Mission Runner - Level 7c">lvl-1 Mission Runner - Level 7</option>
       <option value="lvl-2 Mission Runner - Level 1c">lvl-2 Mission Runner - Level 1</option>
       <option value="lvl-2 Mission Runner - Level 2c">lvl-2 Mission Runner - Level 2</option>
       <option value="lvl-2 Mission Runner - Level 3c">lvl-2 Mission Runner - Level 3</option>
       <option value="lvl-2 Mission Runner - Level 4c">lvl-2 Mission Runner - Level 4</option>
       <option value="lvl-2 Mission Runner - Level 5c">lvl-2 Mission Runner - Level 5</option>
       <option value="lvl-2 Mission Runner - Level 6c">lvl-2 Mission Runner - Level 6</option>
       <option value="lvl-2 Mission Runner - Level 7c">lvl-2 Mission Runner - Level 7</option>
       <option value="lvl-3 Mission Runner - Level 1c">lvl-3 Mission Runner - Level 1</option>
       <option value="lvl-3 Mission Runner - Level 2c">lvl-3 Mission Runner - Level 2</option>
       <option value="lvl-3 Mission Runner - Level 3c">lvl-3 Mission Runner - Level 3</option>
       <option value="lvl-3 Mission Runner - Level 4c">lvl-3 Mission Runner - Level 4</option>
       <option value="lvl-3 Mission Runner - Level 5c">lvl-3 Mission Runner - Level 5</option>
       <option value="lvl-3 Mission Runner - Level 6c">lvl-3 Mission Runner - Level 6</option>
       <option value="lvl-3 Mission Runner - Level 7c">lvl-3 Mission Runner - Level 7</option>
       <option value="lvl-4 Mission Runner - Level 1c">lvl-4 Mission Runner - Level 1</option>
       <option value="lvl-4 Mission Runner - Level 2c">lvl-4 Mission Runner - Level 2</option>
       <option value="lvl-4 Mission Runner - Level 3c">lvl-4 Mission Runner - Level 3</option>
       <option value="lvl-4 Mission Runner - Level 4c">lvl-4 Mission Runner - Level 4</option>
       <option value="lvl-4 Mission Runner - Level 5c">lvl-4 Mission Runner - Level 5</option>
       <option value="lvl-4 Mission Runner - Level 6c">lvl-4 Mission Runner - Level 6</option>
       <option value="lvl-4 Mission Runner - Level 7c">lvl-4 Mission Runner - Level 7</option>
    </select>
</div>
<div id="Staff Sergeant"  class="style-sub-1"  style="display: none;" name="stylesub1" onchange="ChangeDropdowns(this.value)">
  <label>Which Job? </label>
    <select id="Staff Sergeant" name="Staff Sergeant">
    <option value="">-Choose A Job-</option>
      <option value="Basic Ore Miner - Level 1d">Basic Ore Miner - Level 1</option>
       <option value="Basic Ore Miner - Level 2d">Basic Ore Miner - Level 2</option>
       <option value="Basic Ore Miner - Level 3d">Basic Ore Miner - Level 3</option>
       <option value="Basic Ore Miner - Level 4d">Basic Ore Miner - Level 4</option>
       <option value="Basic Ore Miner - Level 5d">Basic Ore Miner - Level 5</option>
       <option value="Basic Ore Miner - Level 6d">Basic Ore Miner - Level 6</option>
       <option value="Basic Ore Miner - Level 7d">Basic Ore Miner - Level 7</option>
       <option value="Plagioclase Miner - Level 1d">Plagioclase Miner - Level 1</option>
       <option value="Plagioclase Miner - Level 2d">Plagioclase Miner - Level 2</option>
       <option value="Plagioclase Miner - Level 3d">Plagioclase Miner - Level 3</option>
       <option value="Plagioclase Miner - Level 4d">Plagioclase Miner - Level 4</option>
       <option value="Plagioclase Miner - Level 5d">Plagioclase Miner - Level 5</option>
       <option value="Plagioclase Miner - Level 6d">Plagioclase Miner - Level 6</option>
       <option value="Plagioclase Miner - Level 7d">Plagioclase Miner - Level 7</option>
       <option value="Omber Miner - Level 1d">Omber Miner - Level 1</option>  
       <option value="Omber Miner - Level 2d">Omber Miner - Level 2</option>
       <option value="Omber Miner - Level 3d">Omber Miner - Level 3</option>
       <option value="Omber Miner - Level 4d">Omber Miner - Level 4</option>
       <option value="Omber Miner - Level 5d">Omber Miner - Level 5</option>
       <option value="Omber Miner - Level 6d">Omber Miner - Level 6</option>
       <option value="Omber Miner - Level 7d">Omber Miner - Level 7</option>
      <option value="lvl-1 Mission Runner - Level 1d">lvl-1 Mission Runner - Level 1</option>
      <option value="lvl-1 Mission Runner - Level 2d">lvl-1 Mission Runner - Level 2</option>
      <option value="lvl-1 Mission Runner - Level 3d">lvl-1 Mission Runner - Level 3</option>
      <option value="lvl-1 Mission Runner - Level 4d">lvl-1 Mission Runner - Level 4</option>
      <option value="lvl-1 Mission Runner - Level 5d">lvl-1 Mission Runner - Level 5</option>
      <option value="lvl-1 Mission Runner - Level 6d">lvl-1 Mission Runner - Level 6</option>
      <option value="lvl-1 Mission Runner - Level 7d">lvl-1 Mission Runner - Level 7</option>
      <option value="lvl-2 Mission Runner - Level 1d">lvl-2 Mission Runner - Level 1</option>
       <option value="lvl-2 Mission Runner - Level 2d">lvl-2 Mission Runner - Level 2</option>
       <option value="lvl-2 Mission Runner - Level 3d">lvl-2 Mission Runner - Level 3</option>
       <option value="lvl-2 Mission Runner - Level 4d">lvl-2 Mission Runner - Level 4</option>
       <option value="lvl-2 Mission Runner - Level 5d">lvl-2 Mission Runner - Level 5</option>
       <option value="lvl-2 Mission Runner - Level 6d">lvl-2 Mission Runner - Level 6</option>
       <option value="lvl-2 Mission Runner - Level 7d">lvl-2 Mission Runner - Level 7</option>
      <option value="lvl-3 Mission Runner - Level 1d">lvl-3 Mission Runner - Level 1</option>
       <option value="lvl-3 Mission Runner - Level 2d">lvl-3 Mission Runner - Level 2</option>
       <option value="lvl-3 Mission Runner - Level 3d">lvl-3 Mission Runner - Level 3</option>
       <option value="lvl-3 Mission Runner - Level 4d">lvl-3 Mission Runner - Level 4</option>
       <option value="lvl-3 Mission Runner - Level 5d">lvl-3 Mission Runner - Level 5</option>
       <option value="lvl-3 Mission Runner - Level 6d">lvl-3 Mission Runner - Level 6</option>
       <option value="lvl-3 Mission Runner - Level 7d">lvl-3 Mission Runner - Level 7</option>
      <option value="lvl-4 Mission Runner - Level 1d">lvl-4 Mission Runner - Level 1</option>
       <option value="lvl-4 Mission Runner - Level 2d">lvl-4 Mission Runner - Level 2</option>
       <option value="lvl-4 Mission Runner - Level 3d">lvl-4 Mission Runner - Level 3</option>
       <option value="lvl-4 Mission Runner - Level 4d">lvl-4 Mission Runner - Level 4</option>
       <option value="lvl-4 Mission Runner - Level 5d">lvl-4 Mission Runner - Level 5</option>
       <option value="lvl-4 Mission Runner - Level 6d">lvl-4 Mission Runner - Level 6</option>
       <option value="lvl-4 Mission Runner - Level 7d">lvl-4 Mission Runner - Level 7</option>
    </select>
</div>
<div id="Senior Master Sergeant"  class="style-sub-1"  style="display: none;" name="stylesub1" onchange="ChangeDropdowns(this.value)">
  <label>Which Job? </label>
    <select id="Senior Master Sergeant" name="Senior Master Sergeant">
    <option value="">-Choose A Job-</option>
      <option value="Basic Ore Miner - Level 1e">Basic Ore Miner - Level 1</option>
       <option value="Basic Ore Miner - Level 2e">Basic Ore Miner - Level 2</option>
       <option value="Basic Ore Miner - Level 3e">Basic Ore Miner - Level 3</option>
       <option value="Basic Ore Miner - Level 4e">Basic Ore Miner - Level 4</option>
       <option value="Basic Ore Miner - Level 5e">Basic Ore Miner - Level 5</option>
       <option value="Basic Ore Miner - Level 6e">Basic Ore Miner - Level 6</option>
       <option value="Basic Ore Miner - Level 7e">Basic Ore Miner - Level 7</option>
       <option value="Plagioclase Miner - Level 1e">Plagioclase Miner - Level 1</option>
       <option value="Plagioclase Miner - Level 2e">Plagioclase Miner - Level 2</option>
       <option value="Plagioclase Miner - Level 3e">Plagioclase Miner - Level 3</option>
       <option value="Plagioclase Miner - Level 4e">Plagioclase Miner - Level 4</option>
       <option value="Plagioclase Miner - Level 5e">Plagioclase Miner - Level 5</option>
       <option value="Plagioclase Miner - Level 6e">Plagioclase Miner - Level 6</option>
       <option value="Plagioclase Miner - Level 7e">Plagioclase Miner - Level 7</option>
       <option value="Omber Miner - Level 1e">Omber Miner - Level 1</option>  
       <option value="Omber Miner - Level 2e">Omber Miner - Level 2</option>
       <option value="Omber Miner - Level 3e">Omber Miner - Level 3</option>
       <option value="Omber Miner - Level 4e">Omber Miner - Level 4</option>
       <option value="Omber Miner - Level 5e">Omber Miner - Level 5</option>
       <option value="Omber Miner - Level 6e">Omber Miner - Level 6</option>
       <option value="Omber Miner - Level 7e">Omber Miner - Level 7</option>
      <option value="lvl-1 Mission Runner - Level 1e">lvl-1 Mission Runner - Level 1</option>
      <option value="lvl-1 Mission Runner - Level 2e">lvl-1 Mission Runner - Level 2</option>
      <option value="lvl-1 Mission Runner - Level 3e">lvl-1 Mission Runner - Level 3</option>
      <option value="lvl-1 Mission Runner - Level 4e">lvl-1 Mission Runner - Level 4</option>
      <option value="lvl-1 Mission Runner - Level 5e">lvl-1 Mission Runner - Level 5</option>
      <option value="lvl-1 Mission Runner - Level 6e">lvl-1 Mission Runner - Level 6</option>
      <option value="lvl-1 Mission Runner - Level 7e">lvl-1 Mission Runner - Level 7</option>
      <option value="lvl-2 Mission Runner - Level 1e">lvl-2 Mission Runner - Level 1</option>
       <option value="lvl-2 Mission Runner - Level 2e">lvl-2 Mission Runner - Level 2</option>
       <option value="lvl-2 Mission Runner - Level 3e">lvl-2 Mission Runner - Level 3</option>
       <option value="lvl-2 Mission Runner - Level 4e">lvl-2 Mission Runner - Level 4</option>
       <option value="lvl-2 Mission Runner - Level 5e">lvl-2 Mission Runner - Level 5</option>
       <option value="lvl-2 Mission Runner - Level 6e">lvl-2 Mission Runner - Level 6</option>
       <option value="lvl-2 Mission Runner - Level 7e">lvl-2 Mission Runner - Level 7</option>
      <option value="lvl-3 Mission Runner - Level 1e">lvl-3 Mission Runner - Level 1</option>
       <option value="lvl-3 Mission Runner - Level 2e">lvl-3 Mission Runner - Level 2</option>
       <option value="lvl-3 Mission Runner - Level 3e">lvl-3 Mission Runner - Level 3</option>
       <option value="lvl-3 Mission Runner - Level 4e">lvl-3 Mission Runner - Level 4</option>
       <option value="lvl-3 Mission Runner - Level 5e">lvl-3 Mission Runner - Level 5</option>
       <option value="lvl-3 Mission Runner - Level 6e">lvl-3 Mission Runner - Level 6</option>
       <option value="lvl-3 Mission Runner - Level 7e">lvl-3 Mission Runner - Level 7</option>
      <option value="lvl-4 Mission Runner - Level 1e">lvl-4 Mission Runner - Level 1</option>
       <option value="lvl-4 Mission Runner - Level 2e">lvl-4 Mission Runner - Level 2</option>
       <option value="lvl-4 Mission Runner - Level 3e">lvl-4 Mission Runner - Level 3</option>
       <option value="lvl-4 Mission Runner - Level 4e">lvl-4 Mission Runner - Level 4</option>
       <option value="lvl-4 Mission Runner - Level 5e">lvl-4 Mission Runner - Level 5</option>
       <option value="lvl-4 Mission Runner - Level 6e">lvl-4 Mission Runner - Level 6</option>
       <option value="lvl-4 Mission Runner - Level 7e">lvl-4 Mission Runner - Level 7</option>
    </select>
</div>
        <div class="clear"></div><div id="error-message-style-sub-1"></div></div>

正如我所说，以上示例中的javascript代码都不适用于我，而且我对javascript很新（并且在HTML中也没有过多的经验）所以有任何建议吗？

此外，一旦用户在第二个下拉框中进行选择，我想要一个独特的文本行（即他们选择的唯一文本）显示在下拉框下面。这是我发现的一个例子：

Toggle a hidden div when a particular dropdown option is selected/de-selected

然而，再次，与这个问题不同，我不想只有一个选项来显示文字;我希望为所选的任何选项显示不同的文本行。我将如何修改此示例中的代码以使其工作？

我知道这可能会成为一个大型项目，所以如果你能给我一个我要做的修改代码的样本，那么不要担心为我输入所有内容，这样就可以了影响不仅仅是一个选项。正如你可以通过这篇文章的大小猜测的那样，我很自信地写了很多篇幅。

非常感谢任何帮助。

提前致谢。

Answer 1

无论如何，您已经最终得到了可能最简单的HTML标记用于该作业：

<select size="1" id="Rank" title="" name="Rank">
    <option value="">-Select Your Rank-</option>
    <option value="Airman">Airman</option>
    <option value="Airman First Class">Airman First Class</option>
    <option value="Senior Airman">Senior Airman</option>
    <option value="Staff Sergeant">Staff Sergeant</option>
    <option value="Senior Master Sergeant">Senior Master Sergeant</option>
</select>

然后为<element>的每种可能性设置一个<option>容器。

<div>
    // For Airman
</div>
<div>
    // For Senior Airman
</div>

...等等...

我会根据选择<option>的所有内容使用相同的布局;您想要的唯一文本行，其他选择框等等。我将每个文本包装在容器元素中，这样您就可以轻松地将所有元素作为一个元素。

<div class="container">
    <div>
        Line of text for Airman
    </div>
    <div>
        Line of text for Senior Airman
    </div>
</div>

<div class="container">
    <div>
        <select>
            <option>Airman Stuff</option>
        </select>
    </div>
    <div>
        <select>
            <option>Senior Airman Stuff</option>
        </select>
    </div>
</div>

现在为我们所拥有的每个<div>敲打一个标识符，所以当选择“Airman”时，我们知道哪个<div>是Airmans（所以我们知道展示那些！）

<div class="container">
    <div class="airman">
        Line of text for Airman
    </div>
    <div class="senior-airman">
        Line of text for Senior Airman
    </div>
</div>

<div class="container">
    <div class="airman">
        <select>
            <option>Airman Stuff</option>
        </select>
    </div>
    <div class="senior-airman">
        <select>
            <option>Senior Airman Stuff</option>
        </select>
    </div>
</div>

并将相同的标识符添加到<options>的{​​{1}}：

<select id="rank">

现在我们已经有了这个标记，应用隐藏/显示的JavaScript 非常简单！

<select size="1" id="Rank" title="" name="Rank">
    <option value="">-Select Your Rank-</option>
    <option value="airman">Airman</option>
    <option value="senior-airman">Senior Airman</option>
</select>

完成;结帐示例：http://jsfiddle.net/3UWk2/1/

评论的更新

您尝试更改代码的尝试不起作用的原因是因为我们目前没有绑定到第二级$(document).ready(function () { $('#Rank').bind('change', function () { var elements = $('div.container').children().hide(); // hide all the elements var value = $(this).val(); if (value.length) { // if somethings' selected elements.filter('.' + value).show(); // show the ones we want } }).trigger('change'); // Setup the initial states }); 框的事件处理程序;仅限<select>

你需要基本上重复我们刚刚为第一级导航做的所有事情，对于第二级导航。不使用<select id="rank">的{​​{1}}选择器，而是使用#id;因为我们要定位多个<select>元素，而.class必须是唯一的：

<select>

我们还必须更改#id的名称，以阻止$('.second-level-select').bind('change', function () { var elements = $('div.second-level-container').children().hide(); // hide all the elements var value = $(this).val(); if (value.length) { // if somethings' selected elements.filter('.' + value).show(); // show the ones we want } }).trigger('change'); // Setup the initial states 框隐藏其他元素。

在此处查看更新的示例：http://jsfiddle.net/3UWk2/3/

Answer 2

哇，这是很多代码......但实际上用jQuery很容易（如果这是一个选项）。查看我的example。

您需要做的第一件事是删除id中的空格。这通常很糟糕。其次，您只需显示/隐藏选择列表中的那些值，并将它们作为id传递。

jQuery（不要忘记包含jQuery链接）：

$("#Rank").change(function(){
   correspondingID = $(this).find(":selected").val()
   $(".style-sub-1").hide();
   $("#" + correspondingID).show();
})

Answer 3

我的解决方案和建议是使用AJAX。如果你有很多选择，并且每个选项都很多，那么立即加载它们是没有意义的。我们的想法是发送一个AJAX请求并使用适当的选项更新第二个选择。您还可以为数据库中的每个选项存储正确的文本。这样，您就拥有了所需的一切，并且不会强制用户下载不必要的选择

Answer 4

首先包含HTML代码

 <!-------first dropdown----------->
    <select name="make" id="elements">
      <option value="">-</option>
      <option value="Satec" >Satec</option>
      <option data-val='m2' value="Masibus" >Masibus</option>
      <option data-val='m3' value="Pyrotech" >Pyrotech</option>
       <option data-val='m4' value="Schneider" >Schneider</option>

    </select>

    <!---------second dropdown---------->
    <select name="model" id="category">
      <option value="">-</option>
      <option value="PM130" >PM130</option>
      <option value="PM2160A" >PM2160A</option>
      <option value="MFM101" >MFM101</option>
       <option value="ABC" >ABC</option>
    </select>

包含js脚本

之后

<script>
var category = document.getElementById('category');
document.getElementById('elements').onchange = function() {
  var optionSelected = this.options[this.selectedIndex];
  if (optionSelected.textContent != '-') {
    if (optionSelected.dataset.val === 'm2') {
      category.value = 'PM2160A';
    }
    else if (optionSelected.dataset.val === 'm3')  {
    category.value='MFM101';
}
    else if (optionSelected.dataset.val === 'm4')  {
    category.value='ABC';
}
    else {
      category.value = 'PM130';
    }
  } else {
    category.value = '';
  }
}
</script>

一定会有用。