如何使用下拉列表中的信息填写表单数据 [英] How do I..fill form data with information from a dropdown

问题描述

我在页面上有一个用户可以保存信息的表单，以及一个从他们保存的目录中提取这些已保存文件的下拉列表。我想要的是当他们去那个页面时，是当他们从下拉框中选择文件名时，它将文件的名称放在输入框CodeDescription字段中，并将文件信息放在textareaCode中，但我不确定如何解析它。以下是我目前的代码。

I have a form on a page where users can save information, and a dropdown that pulls those saved files from the directory they saved them to. What I would like is when they go to that page, is that when they select the filename from the dropdown box, it places the name of the file in the input box "CodeDescription" field and the information on the file in the textarea "Code" , however I am unsure how to go about parsing that. Below is my current code.

<input type="hidden" name="Action" value="EDIT" /><input type="hidden" name="Selection"  id="Selection" value="-1"><div>Below is the list of your saved codes. To edit your codes, select it from the list.</div>
<select> 
<?php <br mode="hold" /?>    $directory = $directory = 'users/' . $_SESSION['username'];

$files = scandir( $directory ) ;

foreach( $files as $file )
{
if ( ! is_dir( $file ) )
{
echo "<option>" . $file . "</option>";
}
}
?>
</select>
        <h3>Saved Codes</h3>


        <form method="post" action="/evo/avsaveprocess.php">

            <input type="hidden" name="Action" value="SAVE" />
            <input type="hidden" name="CodeId" id="CodeId" value="0" />
            <table width="100%" border="0">

                <tr>
                    <td>Description:</td>
                    <td><input type="text" name="CodeDescription" size="40" maxlength="50" id="CodeName" value="" /></td>
                </tr>

                <tr>
                    <td valign="top">Code:</td>
                    <td>
                        <textarea rows="10" style="width:99%" name="Code" id="CodeValue"></textarea>
                    </td>
                </tr>

            </table>

            <input type="submit" value="Save" />
            </form>

已添加预标签。

[/编辑]

推荐答案

directory =

directory =

directory ='users /'。

directory = 'users/' .

_SESSION ['username'];

_SESSION['username'];

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