我是一个新手在php,html,css和一个项目上工作(为我自己)。我得到了一个带有依赖下拉框的表单,但我不允许分配多个类,因为它与我的javascript冲突。我想使用相同的类来保持我的表单相似。我能做些什么?如果我选择使用多个类,那么我的javascript就不能正常工作。我找到了名为"category“和"task_type”的下拉框,我想使用“表单控件”类来保持我的表单在javascript中的相似性,我不允许多次使用表单控件。
源代码:https://www.allphptricks.com/dynamic-dependent-select-box-using-jquery-and-ajax/
Category: <select name="category" class="form-control" required>
<option value="0">Select Category</option>
<?php
include('dbconnect.php');
$sql = mysqli_query($DBcon,"SELECT * FROM category");
while($row=mysqli_fetch_array($sql))
{
echo '<option value="'.$row['category_id'].'">'.$row['category_name'].'</option>';
} ?>
</select>
<br/><br/>
Task Type:<select name="task_type" class="form-control" required>
<option>Select Task Type</option>
</select>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js">
</script>
<script type="text/javascript">
$(document).ready(function()
{
$(".form-control").change(function()
{
var category_id=$(this).val();
var post_id = 'id='+ category_id;
$.ajax
({
type: "POST",
url: "ajax.php",
data: post_id,
cache: false,
success: function(cities)
{
$(".form-control").html(cities);
}
});
});
});
</script>
发布于 2018-08-14 08:23:43
您不能为此使用form-control
类,因为您不希望对两个dropdowns执行相同的操作。为它们提供ID以区分它们,并在您的选择器中使用ID。
Category: <select id="category" name="category" class="form-control" required>
<option value="0">Select Category</option>
<?php
include('dbconnect.php');
$sql = mysqli_query($DBcon,"SELECT * FROM category");
while($row=mysqli_fetch_array($sql))
{
echo '<option value="'.$row['category_id'].'">'.$row['category_name'].'</option>';
} ?>
</select>
<br/><br/>
Task Type:<select id="task_type" name="task_type" class="form-control" required>
<option>Select Task Type</option>
</select>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js">
</script>
<script type="text/javascript">
$(document).ready(function()
{
$("#category").change(function()
{
var category_id=$(this).val();
var post_id = 'id='+ category_id;
$.ajax
({
type: "POST",
url: "ajax.php",
data: post_id,
cache: false,
success: function(cities)
{
$("#task_type").html(cities);
}
});
});
});
</script>
https://stackoverflow.com/questions/51831515
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