我有一個 Button，它使用 Boostrap 5 類“Collapse”在 Button Click 上顯示一個 div。它實際上在第一次點擊時顯示了 div，但是當用戶第二次點擊按鈕時內容不會再次隱藏。
<div class="container">
<button role="button" class="btn btn-primary" data-bs-toggle="collapse" data-bs-target="#rrCollapse" >Hinzufügen</button>
<div class="collapse" id="rrCollapse">
<div class="card">
<div class="card-body">
<h1>...</h1>
</div>
</div>
</div>
</div>
這是按鈕和單擊后折疊的 div
<link href="~/lib/bootstrap/dist/css/bootstrap.css" rel="stylesheet" />
<link href="~/lib/bootstrap/dist/css/bootstrap.min.css" rel="stylesheet" />
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script src="~/lib/jquery/dist/jquery.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
我使用的所有檔案。
我正在使用 ASP.net Core 6.0
uj5u.com熱心網友回復：
如果你已經使用了默認的_Layout，并且在_Layout.cshtml中有<link>和<scrpit>，則不需要將這些檔案添加到視圖中。
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
結果：
更新：
在視圖中嘗試以下代碼：
@{
Layout = null;
}
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
<div class="container">
<button role="button" class="btn btn-primary" data-bs-toggle="collapse" data-bs-target="#rrCollapse" >Hinzufügen</button>
<div class="collapse" id="rrCollapse">
<div class="card">
<div class="card-body">
<h1>...</h1>
</div>
</div>
</div>
</div>
這是我的_Layout.cshtml，您可以參考它來更改您的_layout。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>@ViewData["Title"] - MVCForeignIT</title>
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
<link rel="stylesheet" href="~/MVCForeignIT.styles.css" asp-append-version="true" />
</head>
<body>
<header>
<nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
<div class="container-fluid">
<a class="navbar-brand" asp-area="" asp-controller="Home" asp-action="Index">MVCForeignIT</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target=".navbar-collapse" aria-controls="navbarSupportedContent"
aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
<ul class="navbar-nav flex-grow-1">
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Home</a>
</li>
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
</li>
</ul>
</div>
</div>
</nav>
</header>
<div class="container">
<main role="main" class="pb-3">
@RenderBody()
</main>
</div>
<footer class="border-top footer text-muted">
<div class="container">
© 2022 - MVCForeignIT - <a asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
</div>
</footer>
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
<script src="~/js/site.js" asp-append-version="true"></script>
@await RenderSectionAsync("Scripts", required: false)
</body>
</html>
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