我有一个带有 JS 的表单，在使用单选按钮选择选项后隐藏和显示表单的字段。
<?php require_once 'resources/menus/adminMenu.php'; ?>
<div class="col-lg-offset-3 col-lg-6 ">
<div class="well bs-component">
<form class="form-group" method="post">
<fieldset>
<legend>Wyszukaj</legend>
<div class="form-group" style="display: block" id="queryIndex">
<label for="index" class="control-label">Indeks</label>
<input class="form-control" id="index" name="index" type="text">
</div>
<div class="form-group" style="display: none" id="queryName">
<label for="name" class="control-label">Imię</label>
<input class="form-control" id="name" name="name" type="text">
<label for="surname" class="control-label">Nazwisko</label>
<input class="form-control" id="surname" name="surname" type="text">
</div>
<div class="form-group" style="display: none" id="queryFaculty">
<label for="faculty" class="control-label">Wydział</label>
<select class="form-control" id="faculty" name="faculty" required="required">
<option value=""></option>
<option value="Wydział A">Wydział A</option>
<option value="Wydział B">Wydział B</option>
<option value="Wydział C">Wydział C</option>
<option value="Wydział D">Wydział D</option>
<option value="Wydział E">Wydział E</option>
</select>
</div>
<div class="form-group" style="display: none" id="querySubject">
<label for="subject" class="control-label">Kierunek</label>
<select class="form-control" id="subject" name="subject" required="required">
<option value=""></option>
<option value="Kierunek AA">Kierunek AA</option>
<option value="Kierunek AB">Kierunek AB</option>
<option value="Kierunek AC">Kierunek AC</option>
<option value="Kierunek BA">Kierunek BA</option>
<option value="Kierunek BB">Kierunek BB</option>
<option value="Kierunek BC">Kierunek BC</option>
<option value="Kierunek CA">Kierunek CA</option>
<option value="Kierunek CB">Kierunek CB</option>
<option value="Kierunek CC">Kierunek CC</option>
<option value="Kierunek DA">Kierunek DA</option>
<option value="Kierunek DB">Kierunek DB</option>
<option value="Kierunek DC">Kierunek DC</option>
<option value="Kierunek EA">Kierunek EA</option>
<option value="Kierunek EB">Kierunek EB</option>
<option value="Kierunek EC">Kierunek EC</option>
</select>
</div>
<div class="form-group" style="display: none" id="querySystem">
<label for="system" class="control-label">System</label>
<select class="form-control" id="system" name="system" required="required">
<option value=""></option>
<option value="st">Stacjonarne</option>
<option value="nst">Niestacjonarne</option>
</select>
</div>
<div class="form-group" style="display: none" id="queryDegree">
<label for="degree" class="control-label">Stopień</label>
<select class="form-control" id="degree" name="degree" required="required">
<option value=""></option>
<option value="I">1. stopień (inżynierskie/licencjat)</option>
<option value="II">2. stopień (magisterskie)</option>
</select>
</div>
<div class="form-group" style="display: none" id="querySemester">
<label for="semester" class="control-label">Semestr</label>
<select class="form-control" id="semester" name="semester" required="required">
<option value=""></option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
</select>
</div>
<div class="form-group">
<input type="radio" name="search" value="index" checked="checked"
onClick="changeForm('queryIndex')"> Indeks
<input type="radio" name="search" value="name"
onClick="changeForm('queryName')"> Imię i nazwisko
<input type="radio" name="search" value="faculty"
onClick="changeForm('queryFaculty')"> Wydział
<input type="radio" name="search" value="subject"
onClick="changeForm('querySubject')"> Kierunek
<input type="radio" name="search" value="system"
onClick="changeForm('querySystem')"> System
<input type="radio" name="search" value="degree"
onClick="changeForm('queryDegree')"> Stopień
<input type="radio" name="search" value="semester"
onClick="changeForm('querySemester')"> Semestr
</div>
<script type="text/javascript">
function changeForm(element) {
document.getElementById('queryIndex').style.display = 'none';
document.getElementById('queryName').style.display = 'none';
document.getElementById('queryFaculty').style.display = 'none';
document.getElementById('querySubject').style.display = 'none';
document.getElementById('querySystem').style.display = 'none';
document.getElementById('queryDegree').style.display = 'none';
document.getElementById('querySemester').style.display = 'none';
document.getElementById(element).style.display = 'block';
}
</script>
<div class="form-group col-lg-4">
<div class="control-label">
<button type="submit" class="btn btn-primary" name="submit" value="searchStudent">Szukaj
</button>
</div>
</div>
</fieldset>
</form>
</div>
</div>
我还有 PHP 文件，我可以从该文件中获取数据。
function studentWindow()
{
$this->setView("AdminPanel", "StudentWindow");
if (isset($_POST['submit']) && $_POST['submit'] == 'searchStudent') {
$query="";
$data=array();
if($_POST['search']=='index'){
$data['index']=sanitizeString($_POST['index']);
$query="st_index LIKE '?%'";
}
elseif($_POST['search']=='name'){
$data['name']=sanitizeString($_POST['name']);
$data['surname']=sanitizeString($_POST['surname']);
$query="name LIKE '?%' AND surname LIKE '?%'";
}
elseif($_POST['search']=='faculty'){
$data['faculty']=$_POST['faculty'];
$query='AS st INNER JOIN subject AS s ON st.id_subject=s.id_subject INNER JOIN faculty AS f ON s.id_faculty=f.id_faculty WHERE f.name=?';
}
elseif($_POST['search']=='subject'){
$data['subject']=$_POST['subject'];
$query='AS st INNER JOIN subject AS s ON st.id_subject=s.id_subject WHERE s.name=?';
}
elseif($_POST['search']=='system'){
$data['system']=$_POST['system'];
$query='system=?';
}
elseif($_POST['search']=='degree'){
$data['degree']=$_POST['degree'];
$query='degree=?';
}
elseif($_POST['search']=='semester'){
$data['semester']=$_POST['semester'];
$query='semester=?';
}
$this->loadModel("AdminPanel");
$model = new AdminPanelModel();
$model->getStudents($query,$data);
}
}
这是一个问题。我无法从表单获取数据，而且按钮也不起作用。我制作了类似的其他形式，但没有 JS。这可能就是原因。您有什么建议或解决方案吗？
附注抱歉我的英语不好；)
最佳答案
问题是在不需要表单字段时使用 required='required'。
用户可以随时提交，并且不明显您必须依次单击每个单选按钮来填写该部分(如果这是有意的)。
我将您的代码作为纯 HTML 运行，并在 Chrome 开发工具中检查了 POST 数据，如果您使用 required 填写所有字段，则效果很好...
您将在控制台中收到一条错误消息，内容如下:
An invalid form control with name='faculty' is not focusable.
Chrome 正在尝试聚焦该字段以添加错误消息，但您设置了 style.display = 'none'，因此它无法实现。
关于javascript - 带 JS 的 HTML 表单在 PHP 中无法正常工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34211058/