Javascript 引导btn组下拉列表单击下拉列表项
我想单击Javascript 引导btn组下拉列表单击下拉列表项,javascript,jquery,twitter-bootstrap,Javascript,Jquery,Twitter Bootstrap,我想单击btn组中的下拉项并运行警报 这是我的HTML: <td> <div class="btn-group" role="group"> <button id="btnGroupVerticalDrop2" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="fa
btn组中的下拉项
并运行警报
这是我的HTML:
<td>
<div class="btn-group" role="group">
<button id="btnGroupVerticalDrop2" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" style="padding: 0px;border: none;">
<i class="flaticon-more-1"></i>
</button>
<div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop2">
<li class="dropdown-item" href="#">Settings</li>
<li class="dropdown-item" href="#">Print Preview</li>
<li class="dropdown-item" id="link-report">Reports</li>
</div>
</div>
</td>
但是这段代码不起作用,你能告诉我这段代码有什么问题吗?请检查这段代码是否起作用
$('#table_test tr>td')。在('click','上。下拉项',函数(){
警报($(this.html());
});代码>
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报告
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报告2
我在您的JavaScript代码中发现了错误。您需要在$(document).ready()
中调用jQuery,因为表id在DOM中尚不可用。以下是完整的示例代码供您参考:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Dropdown Menu Item Click Template</title>
<!-- Bootstrap -->
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#table_test").on("click", ".dropdown-item", function(){
alert("The dropdown menu item was clicked.");
});
});
</script>
</head>
<body>
<h1>Hello, world!</h1>
<table id="table_test" class="table">
<tbody>
<tr>
<td>
<div class="btn-group" role="group">
<button id="btnGroupVerticalDrop2" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" style="padding: 0px;border: none;">
<i>Dropdown</i>
</button>
<div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop2">
<li class="dropdown-item" href="#">Settings</li>
<li class="dropdown-item" href="#">Print Preview</li>
<li class="dropdown-item" id="link-report">Reports</li>
</div>
</div>
</td>
</tr>
</tbody>
</table>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
</body>
</html>
下拉菜单项单击模板
$(文档).ready(函数(){
$(“#表_测试”)。在(“单击”,“下拉项”,函数()上){
警报(“已单击下拉菜单项”);
});
});
你好,世界!
下拉列表
设置
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报告
为了简单起见,您可以在HTML文件中直接使用它。我已经在W3Schools.com TryIt编辑器中验证了这一点,它对我来说运行良好
如上所示,我将jQuery脚本放在
部分,并调用$(document.ready()
中的.on(“单击”)
函数。这将确保id为table\u test
的表在DOM中可用,然后.on
事件将绑定到元素
让我知道这个答案是否适合你
问候,,
Aj你确定你的表id是“table_test”吗?是的,我使用你的代码作为模板你的代码工作得很好-假设你真的有一个id为table_test
的包含元素(例如table
)。对不起,我刚刚缩短了代码,我有$(document).ready();我认为@jishan siddique的答案更相关。。无论如何,谢谢你的帮助,这可能会帮助别人。当然,没问题。很高兴你找到了你想要的东西。为什么你认为让OP的$(“#table_test”)
选择器变得更严格会解决任何问题?解释你的答案,让所有技能水平的未来访客都能从中学习。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Dropdown Menu Item Click Template</title>
<!-- Bootstrap -->
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#table_test").on("click", ".dropdown-item", function(){
alert("The dropdown menu item was clicked.");
});
});
</script>
</head>
<body>
<h1>Hello, world!</h1>
<table id="table_test" class="table">
<tbody>
<tr>
<td>
<div class="btn-group" role="group">
<button id="btnGroupVerticalDrop2" type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" style="padding: 0px;border: none;">
<i>Dropdown</i>
</button>
<div class="dropdown-menu" aria-labelledby="btnGroupVerticalDrop2">
<li class="dropdown-item" href="#">Settings</li>
<li class="dropdown-item" href="#">Print Preview</li>
<li class="dropdown-item" id="link-report">Reports</li>
</div>
</div>
</td>
</tr>
</tbody>
</table>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/js/bootstrap.min.js"></script>
</body>
</html>