javascript - 如何使用 jQuery 调用 Bootstrap 警报？

Question

假设我有以下代码:

<div class="alert alert-info fade in" id="bsalert">
  <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
  <strong>Info!</strong> This alert box could indicate a neutral informative or action
</div>

如何使用 jQuery 手动激活它？

Answer 1

Bootstrap 使用 in 和 out 类来实现可见性。您只需要切换这些类即可。另外，如果您希望在取消后保留警报，您可以向 close.bs.alert 事件添加 return false。

function toggleAlert(){
    $(".alert").toggleClass('in out'); 
    return false; // Keep close.bs.alert event from removing from DOM
}


$("#btn").on("click", toggleAlert);
$('#bsalert').on('close.bs.alert', toggleAlert)

<link rel="stylesheet" type="text/css"  href="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<button id="btn">Toggle</button>

<div class="alert alert-info fade out" id="bsalert">
  <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
  <strong>Info!</strong> This alert box could indicate a neutral informative or action
</div>

<div>
    content