PHP - WebCalendar - 基于下拉列表选择隐藏字段 [英] PHP - WebCalendar - hide field based on dropdown list selection

问题描述

使用WebCalendar应用程式 http://www.k5n.us/webcalendar.php 和我正在为额外字段的工作方式创建一些自定义修改。

Using the WebCalendar app http://www.k5n.us/webcalendar.php and I'm creating some custom edits for the way extra fields work.

特别是，我创建了两个额外的字段;其中一个是县的下拉列表，另一个是文本字段。下拉列表中的一个选项是 ** OTHER ，文本字段是供用户指定 ** OTHER 选择。

Particularly, I have two extra fields created; one of them being a dropdown list of counties, and the other being a text field. One option in the dropdown list is **OTHER and the text field is there for the user to specify their **OTHER selection.

我可以在PHP中指定下拉列表和选择：

I can specify the dropdown list and selection in PHP with the following:

if ($site_extras[1][3] == '**OTHER' )
  { do something to hide html class .other_field }

我可以根据下拉列表输入隐藏/显示文本字段的方向上的任何提示或推送？

Any hints or pushes in a direction that I may look into for hiding/showing the text field based on the dropdown list input?

请根据需要编辑和删除/添加标签。

Please edit and remove/add tags as necessary. I just selected ones that may be relevant for the needs of this operation.

编辑：Html片段

<table class="extra_table" summary="">
            <tr>
              <td class="aligntop bold">*Location:</td>
              <td class="extra_field_input">
                <select name="County">
                  <option value="Select County...
"  selected="selected">Select County...

</option>
                  <option value="DODGE" >DODGE
</option>
                  <option value="DOUGLAS" >DOUGLAS
</option>
                  <option value="LANCASTER" >LANCASTER
</option>
                  <option value="MADISON" >MADISON
</option>
                  <option value="**OTHER" >**OTHER
</option>
                  <option value="--------------------" >--------------------

</option>
                  </select>

                </td>
              </tr>
            <tr>
              <td class="aligntop bold">**If Other, Please Specify:</td>
              <td class="extra_field_input">
                <input type="text" size="17" name="Other_County" value="" />
                </td>
              </tr>

推荐答案

看看这个jsfiddle： http://jsfiddle.net/2bt8D/

Take a look at this jsfiddle: http://jsfiddle.net/2bt8D/

我不得不为您的文本字段添加一个额外的类以区分它 extra ，并将您的输入/文本字段设置为 style =display：none; code>开始。如果这是可能的，在你使用的框架的限制内，你是一个赢家。 （

I had to add an extra class to your text field to differentiate it extra, and set your input / text field to style="display:none;" to start. If that is possible within the limitations of the framework you are using, you're on to a winner. (NOTE: There are definitely better ways to write the Jquery!)

Jquery语句：

$(function() {
    $("select").change(function() {        
        var selectValue = $(".extra_field_input select").val();

        if (selectValue == "**OTHER") {
            $(".extra_field_input input").show();
            $(".extra").show();
        } else {
            $(".extra_field_input input").hide();
            $(".extra").hide();
        };
    });
});

需要HTML

<table class="extra_table" summary="">
<tr>
    <td class="aligntop bold">*Location:</td>
    <td class="extra_field_input">
         <select name="County">
              <option value="Select County..." selected="selected">Select County...</option>
              <option value="DODGE" >DODGE</option>
              <option value="DOUGLAS" >DOUGLAS</option>
              <option value="LANCASTER" >LANCASTER</option>
              <option value="MADISON" >MADISON</option>
              <option value="**OTHER">**OTHER</option>
         </select>
    </td>
</tr>
<tr>    
    <td class="aligntop bold extra" style="display:none;">**If Other, Please Specify:</td>
    <td class="extra_field_input">
          <input style="display:none;" type="text" size="17" name="Other_County" value="" />
    </td>
</tr>
</table>

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