所以我有一个用户表，我想在表中添加一列，我可以使用bootstrap下拉菜单将用户状态更改为活动/非活动状态。这是表格的代码：
<table class="table">
<thead>
<tr>
<th>#</th>
<th>First Name</th>
<th>Last Name</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">1</th>
<td>Mark</td>
<td>Otto</td>
<td>
<div class="dropdown">
<button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Active
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<a class="dropdown-item" href="#">Active</a>
<a class="dropdown-item" href="#">Inactive</a>
</div>
</div>
</td>
</tr>
<tr>
<th scope="row">2</th>
<td>Jacob</td>
<td>Thornton</td>
<td>
<div class="dropdown">
<button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Active
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<a class="dropdown-item" href="#">Active</a>
<a class="dropdown-item" href="#">Inactive</a>
</div>
</div>
</td>
</tr>
<tr>
<th scope="row">3</th>
<td>Larry</td>
<td>the Bird</td>
<td>
<div class="dropdown">
<button class="btn btn-outline-secondary dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Active
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<a class="dropdown-item" href="#">Active</a>
<a class="dropdown-item" href="#">Inactive</a>
</div>
</div>
</td>
</tr>
</tbody>
我在最后添加了一个JQuery片段。此代码段的作用是根据点击的dropdown-menu更改dropdown-item标签。
$(function(){
$(".dropdown-menu").on('click', 'a', function(){
$(".btn:first-child").text($(this).text());
$(".btn:first-child").val($(this).text());
});
});
当我更改一个记录的状态时，所有其他记录都会随着该更改而生效。我尝试使用.find()和.siblings()等功能，甚至取消id="dropdownMenuButton"但无法解决问题。有人可以帮助我解决这个问题。
答案 0 :(得分：0)
看起来您并不了解jQuery代码段的工作原理。它应该是：
<!DOCTYPEhtml>
<head>
<title>Daniel Vaughan</title>
<meta charset="utf-8">
<link href="https://fonts.googleapis.com/css?family=Abel|Archivo+Narrow|Barlow|Cabin|Courgette|Dancing+Script|Kanit|Questrial" rel="stylesheet">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js">
</script>
</script>
<style>
body{
background-image:url(images/Omen-Background.jpg);
background-position: center;
color: red;
font-family: 'Barlow','arial', 'Cabin';
font-weight: bold;
font-size: 18px;
}
.navbar{
background-image: inherit;
color:inherit;
}
#aboutme{
margin: 50px 40px 40px 50px;
padding: 50px 25px 25px 50px;
background-image: inherit;
color: grey;
text-shadow: 1px 1px 2px red;
font-family: 'Barlow';
font-size: 18px;
}
p{
background: rgba("204, 204, 204, 0.5");
color: grey;
text-shadow: 1px 1px 2px red;
}
</style>
</head>
<body>
<div class="container-fluid">
<div class="row">
<div class="col-md-6 text-left">
<img class="title-logo" src="https://www.w3schools.com/howto/img_paris.jpg" height="70px" width="100x" alt="Omen logo">
</div>
<div class="col-md-6 text-right text-uppercase">
<h1 class="text-super">Daniel Vaughan</h1>
<h4>Freelance Developer</h4>
</div>
</div>
<header>
<div class="container">
<div class="dropdown">
<button class="btn dropdown-toggle" data-toggle="dropdown">
<span class="caret"></span></button>
<ul class="dropdown-menu">
<a href="danvaughan.html"><li>Home</li></a>
<a href="projects.html"><li>Projects</li></a>
<a href="employment.html"><li>Employment History</li></a>
<a href="hobbies.html"><li>Hobbies</li></a>
</ul>
</div>
</div>
</header>
<div class="container">
<div id="myCarousel" class="carousel slide" data-ride="carousel">
<ol class="carousel-indicators black">
<li data-target="#myCarousel" data-slide-to ="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to ="1"></li>
<li data-target="#myCarousel" data-sldie-to ="2"></li>
<li data-targert="#myCarousel" data-slide-to ="3"></li>
</ol>
<div class="carousel-inner">
<div class="item active">
<img src="https://cloud.netlifyusercontent.com/assets/344dbf88-fdf9-42bb-adb4-46f01eedd629/68dd54ca-60cf-4ef7-898b-26d7cbe48ec7/10-dithering-opt.jpg" width="100%">
<div class="carousel-caption">
<h3>First family holiday</h3>
</div>
</div>
<div class="item">
<img class="image-responsive" src="https://cdn.pixabay.com/photo/2013/04/06/11/50/image-editing-101040_960_720.jpg" width="100%">
<div class="carousel-caption">
<h3>My Favourite Hobbie</h3>
</div>
</div>
<div class="item">
<img class="image-responsive" src="https://html5box.com/html5lightbox/images/lakeandballoon.jpg" width="100%">
<div class="carousel-caption">
<h3>Some of my favourite books</h3>
</div>
</div>
<div class="item">
<img class="image-responsive" src="https://demo.phpgang.com/crop-images/demo_files/pool.jpg" width="100%">
<div class="carousel-caption">
<h3>Gaming (my second favourite hobbie)</h3>
</div>
</div>
<a class="left carousel-control" href="#myCarousel" data-slide="prev"><span class="glyphicon glyphicon-chevron-left"></span>
</a>
<a class="right carousel-control" href="#myCarousel" data-slide="next"><span class="glyphicon glyphicon-chevron-right"></span>
</a>
</div>
<div class="container-fluid">
<div class="row">
<div class="col-6 text-left" id="aboutme">
<h1> A Little About Me</h1>
<p class="text-left">Hello<br/> My name is Daniel Vaughan (Dan). Welcome to my website.</p>
<p class="text-left">I am a freelance web developer based in Birmingham UK. I have gained experience in the field of web development through the good people at Freecode camp, where I learned how to code. I love coding.<br/> It gives me great satisfaction when I make websites that are responsive and beautiful.At the moment I am in the market for part-time work as I am still employed as a machine operator.</p>
</div>
</div>
</div>
<script>
$("document").ready(function(){
$("#item").click(function(){
$("#submenu").slideToggle(500);
});
});
</script>
</body>