Pil*_*640 3 html javascript css bootstrap-5 bootstrap5-modal
我正在尝试实现一个在加载学校作业页面时自动打开的模式。我正在使用 Bootstrap 5，我在网上找到的所有示例都使用旧版本。该模式可以在评论下找到Vertically Centered Cookies Modal。我使用了 Bootstrap CDN 以及https://getbootstrap.com/中的 Popper Bundle 。这是我的代码：
<!DOCTYPE HTML>
<html lang="en-AU">
<head>
<!-- Require Meta Tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- CDN - Bootstrap CSS -->
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<!-- Title -->
<title>Title Here</title>
<!-- Webpage Icon -->
<link rel="shortcut icon" href="Images\Pilot640_Logo_Symbol.ico"/>
</head>
<body>
<!-- Nav Bar -->
<nav class="navbar navbar-expand-sm bg-secondary navbar-white">
<div class="container-fluid">
<a class="navbar-brand" href="#">
<img src="Images\Pilot640_Logo_Symbol.ico" alt="Logo" style="width:100px;" class="rounded-pill">
</a>
</div>
</nav>
<!-- Header Section -->
<header>
</header>
<!-- Vertically Centered Cookies Modal -->
<div class="modal-dialog modal-dialog-centered" id="onload">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Do You Want Cookie? We Want Yours! </h5>
</div>
<div class="modal-body">
This site uses cookies to personalies the content for you.
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
</div>
</div>
</div>
<!-- Bootstrap Bundle with Popper -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
<!--Modal JS Script -->
<script type="text/javascript">
$(window).load(function(){
$('#onload').modal('show');
});
</script>
</body>
</html>
如果有人知道问题是什么或如何解决问题，我们将不胜感激。
小智 7
普通 JS 解决方案
HTML 将保持不变，但您不需要加载 jQuery
<script type="text/javascript">
window.onload = () => {
const myModal = new bootstrap.Modal('#onload');
myModal.show();
}
</script>
小智 5
首先欢迎来到 Stackoverflow 社区。
正如您所要求的，您首先已更正模式对话框代码片段。您错过了其中的第一行模式。你必须将 id 添加到该行，而不是modal-dialogdiv
<div class="modal fade" id="onload" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true"> <!-- Add this line to your code -->
<div class="modal-dialog modal-dialog-centered">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Do You Want Cookie? We Want Yours! </h5>
</div>
<div class="modal-body">
This site uses cookies to personalies the content for you.
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
</div>
</div>
</div>
</div> <!-- And the relavant closing div tag -->
然后您需要导入jquery到您的代码中。否则，jquery 代码段将无法在您的 html 文件中工作。最后，不要使用 jquery 事件监听器，而是onload使用本机 VanillaJSwindow.onload事件来触发您的模式。
<!-- import jquery -->
<script src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
<!-- Bootstrap Bundle with Popper -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
<!--Modal JS Script -->
<script type="text/javascript">
window.onload = () => {
$('#onload').modal('show');
}
</script>
然后你的引导模式将按照预期的行为工作。
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