javascript - 选择表单后从数据库获取隐藏的输入值

Question

我有一个选择输入，可以从数据库retailer_id获取选项，我需要什么，当管理员在此选择输入上选择零售商时，我将有一个带有retailer_slug的新零售商，然后，当管理员创建或更新，将隐藏输入上的retailer_id和retailer_slug发送到数据库。我的代码是:

已编辑

        <select class="textbox2" id="retailer_id" name="retailer_id">
<option value="">--- Please select store ---</option>
<?php
    $sql_retailers = smart_mysql_query("SELECT * FROM cashbackengine_retailers WHERE status='active' ORDER BY title ASC");
    while ($row_retailers = mysql_fetch_array($sql_retailers))
    {
        if ($retailer_id == $row_retailers['retailer_id']) $selected = " selected=\"selected\""; else $selected = "";
        echo "<option data-slug=\"".$row_retailers['slug_title']."\" value=\"".$row_retailers['retailer_id']."\"".$selected.">".$row_retailers['title']."</option>";
    }
?>
</select>

<input type="text" name="slug" id="slug" value=""/>
         <script type="text/javascript">
        $(document).ready(function() {
        $('#retailer_id').on('change', function() {
var $selected = $('#retailer_id option:selected');
$('input[name=slug]').val($selected.data('slug'));
});
});
        </script>

Answer 1

如果我理解正确，这是你可以做的一件事:

PHP

<select class="textbox2" id="retailer_id" name="retailer_id">
    <option value="">--- Please select store ---</option>
    <?php
        $sql_retailers = smart_mysql_query("SELECT * FROM cashbackengine_retailers WHERE status='active' ORDER BY title ASC");
        while ($row_retailers = mysql_fetch_array($sql_retailers))
        {
            if ($retailer_id == $row_retailers['retailer_id']) $selected = " selected=\"selected\""; else $selected = "";
            echo "<option data-slug=\"".$row_retailers['retail_slug']."\" value=\"".$row_retailers['retailer_id']."\"".$selected.">".$row_retailers['title']."</option>";
        }
    ?>
</select>
<input type="hidden" name="retailer_slug"/>

jQuery

$('#retailer_id').on('change', function() {
    var $selected = $('#retailer_id option:selected');
    $('input[name=retailer_slug]').val($selected.data('slug'));
});

基本上，这里的想法是保存 retailer_slug值为 data-每个 <option> 上的属性。然后，当所选选项更改时，retailer_slug值被复制到隐藏输入。