我有一个包含菜单和内容div的索引页。当我将带有表单的页面加载到内容div中并提交表单时，我的验证不起作用。但是，如果我只是调出页面（我正在加载到div中的页面），则验证可以正常进行。我一直在疯狂地尝试在网络上为此找到解决方案，并尝试了一些方法，但是，这些方法都没有起作用。下面是我的索引页面，“ validtest2.php”是我正在加载并要验证的页面。先感谢您。 -彼得
**** index.php ****
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>Material Design Bootstrap</title>
<!-- Font Awesome -->
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.6.1/css/all.css">
<!-- Bootstrap core CSS -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- Material Design Bootstrap -->
<link href="css/mdb.min.css" rel="stylesheet">
<!-- Your custom styles (optional) -->
<link href="css/style.css" rel="stylesheet">
</head>
<body>
<!-- Start your project here-->
<!-- SideNav slide-out button -->
<a href="#" data-activates="slide-out" class="btn btn-primary p-3 button-collapse"><i class="fas fa-bars"></i></a>
<!-- Sidebar navigation -->
<div id="slide-out" class="side-nav fixed">
<ul class="custom-scrollbar">
<!-- Logo -->
<li>
<div class="logo-wrapper waves-light">
<a href="#"><img src="https://mdbootstrap.com/img/logo/mdb-transparent.png" class="img-fluid flex-center"></a>
</div>
</li>
<!--/. Logo -->
<!--Social-->
<li>
<ul class="social">
<li><a href="#" class="icons-sm fb-ic"><i class="fab fa-facebook-f"> </i></a></li>
<li><a href="#" class="icons-sm pin-ic"><i class="fab fa-pinterest"> </i></a></li>
<li><a href="#" class="icons-sm gplus-ic"><i class="fab fa-google-plus-g"> </i></a></li>
<li><a href="#" class="icons-sm tw-ic"><i class="fab fa-twitter"> </i></a></li>
</ul>
</li>
<!--/Social-->
<!--Search Form-->
<li>
<form class="search-form" role="search">
<div class="form-group md-form mt-0 pt-1 waves-light">
<input type="text" class="form-control" placeholder="Search">
</div>
</form>
</li>
<!--/.Search Form-->
<!-- Side navigation links -->
<li>
<ul class="collapsible collapsible-accordion">
<li><a class="collapsible-header waves-effect arrow-r"><i class="fas fa-chevron-right"></i> Menu 1<i
class="fas fa-angle-down rotate-icon"></i></a>
<div class="collapsible-body">
<ul>
<li><a id="link_test_form_1" href="#" class="waves-effect">Validation Test Page</a>
</li>
<li><a href="#" class="waves-effect">Test Link 2</a>
</li>
</ul>
</div>
</li>
<li><a class="collapsible-header waves-effect arrow-r"><i class="fas fa-hand-pointer-o"></i> Menu 2<i
class="fas fa-angle-down rotate-icon"></i></a>
<div class="collapsible-body">
<ul>
<li><a href="#" class="waves-effect">Test Link 3</a>
</li>
<li><a href="#" class="waves-effect">Test Link 4</a>
</li>
</ul>
</div>
</li>
<li><a class="collapsible-header waves-effect arrow-r"><i class="fas fa-eye"></i> About<i class="fas fa-angle-down rotate-icon"></i></a>
<div class="collapsible-body">
<ul>
<li><a href="#" class="waves-effect">Introduction</a>
</li>
<li><a href="#" class="waves-effect">Monthly meetings</a>
</li>
</ul>
</div>
</li>
<li><a class="collapsible-header waves-effect arrow-r"><i class="fas fa-envelope-o"></i> Contact me<i
class="fas fa-angle-down rotate-icon"></i></a>
<div class="collapsible-body">
<ul>
<li><a href="#" class="waves-effect">FAQ</a>
</li>
<li><a href="#" class="waves-effect">Write a message</a>
</li>
</ul>
</div>
</li>
</ul>
</li>
<!--/. Side navigation links -->
</ul>
<div class="sidenav-bg rgba-blue-strong"></div>
</div>
<!--/. Sidebar navigation -->
<!-- /Start your project here-->
<div class="content container-fluid" style="padding-left: 250px; padding-right: 15px; padding-top: 15px; background-color: #FFFFFF;">
</div>
<!-- SCRIPTS -->
<!-- JQuery -->
<script type="text/javascript" src="js/jquery-3.3.1.min.js"></script>
<!-- Bootstrap tooltips -->
<script type="text/javascript" src="js/popper.min.js"></script>
<!-- Bootstrap core JavaScript -->
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<!-- MDB core JavaScript -->
<script type="text/javascript" src="js/mdb.min.js"></script>
<script>
// SideNav Button Initialization
$(".button-collapse").sideNav();
// SideNav Scrollbar Initialization
var sideNavScrollbar = document.querySelector('.custom-scrollbar');
Ps.initialize(sideNavScrollbar);
</script>
<script type="text/javascript">
$("#link_test_form_1").click(function(){
$(".content").load("validtest2.php");
});
</script>
<script>
// Example starter JavaScript for disabling form submissions if there are invalid fields
(function() {
'use strict';
window.addEventListener('load', function() {
// Fetch all the forms we want to apply custom Bootstrap validation styles to
var forms = document.getElementsByClassName('needs-validation');
// Loop over them and prevent submission
var validation = Array.prototype.filter.call(forms, function(form) {
form.addEventListener('submit', function(event) {
if (form.checkValidity() === false) {
event.preventDefault();
event.stopPropagation();
}
form.classList.add('was-validated');
}, false);
});
}, false);
})();
</script>
</body>
</html>
***** validtest2.php *******
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>Material Design Bootstrap</title>
<!-- Font Awesome -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<!-- Bootstrap core CSS -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- Material Design Bootstrap -->
<link href="css/mdb.min.css" rel="stylesheet">
<!-- Your custom styles (optional) -->
<link href="css/style.css" rel="stylesheet">
</head>
<body>
<form class="needs-validation" id="validtest2" novalidate>
<div class="form-row">
<div class="col-md-4 mb-3 md-form">
<label for="validationCustom012">First name</label>
<input type="text" class="form-control" id="validationCustom012" placeholder="First name" value="Mark"
required>
<div class="valid-feedback">
Looks good!
</div>
</div>
<div class="col-md-4 mb-3 md-form">
<label for="validationCustom022">Last name</label>
<input type="text" class="form-control" id="validationCustom022" value="Otto" required>
<div class="valid-feedback">
Looks good!
</div>
</div>
<div class="col-md-4 mb-3 md-form">
<label for="validationCustomUsername2">Username</label>
<input type="text" class="form-control" id="validationCustomUsername2" aria-describedby="inputGroupPrepend2"
required>
<div class="invalid-feedback">
Please choose a username.
</div>
</div>
</div>
<div class="form-row">
<div class="col-md-6 mb-3 md-form">
<label for="validationCustom032">City</label>
<input type="text" class="form-control" id="validationCustom032" required>
<div class="invalid-feedback">
Please provide a valid city.
</div>
</div>
<div class="col-md-3 mb-3 md-form">
<label for="validationCustom042">State</label>
<input type="text" class="form-control" id="validationCustom042" required>
<div class="invalid-feedback">
Please provide a valid state.
</div>
</div>
<div class="col-md-3 mb-3 md-form">
<label for="validationCustom052">Zip</label>
<input type="text" class="form-control" id="validationCustom052" required>
<div class="invalid-feedback">
Please provide a valid zip.
</div>
</div>
</div>
<div class="form-group">
<div class="form-check pl-0">
<input class="form-check-input" type="checkbox" value="" id="invalidCheck2" required>
<label class="form-check-label" for="invalidCheck2">
Agree to terms and conditions
</label>
<div class="invalid-feedback">
You must agree before submitting.
</div>
</div>
</div>
<button class="btn btn-primary btn-rounded" type="submit">Submit form</button>
</form>
<!-- JQuery -->
<script type="text/javascript" src="js/jquery-3.3.1.min.js"></script>
<!-- Bootstrap tooltips -->
<script type="text/javascript" src="js/popper.min.js"></script>
<!-- Bootstrap core JavaScript -->
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<!-- MDB core JavaScript -->
<script type="text/javascript" src="js/mdb.min.js"></script>
</body>
<script>
// Example starter JavaScript for disabling form submissions if there are invalid fields
(function() {
'use strict';
window.addEventListener('load', function() {
// Fetch all the forms we want to apply custom Bootstrap validation styles to
var forms = document.getElementsByClassName('needs-validation');
// Loop over them and prevent submission
var validation = Array.prototype.filter.call(forms, function(form) {
form.addEventListener('submit', function(event) {
if (form.checkValidity() === false) {
event.preventDefault();
event.stopPropagation();
}
form.classList.add('was-validated');
}, false);
});
}, false);
})();
</script>
</html>