关闭 bootstrap 警报时设置 cookie

Question

当用户从 bootstrap

关闭此警报时，如何存储 cookie

<div class="alert alert-warning alert-dismissible fade show" role="alert">
  <strong>Holy guacamole!</strong> You should check in on some of those fields below.
  <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
</div>

我知道如何用“onclick”来实现，但是有没有不修改上面代码的另一种方法？

Answer 1

所以你问的是如何在不修改元素的情况下将侦听器附加到 dom 元素？

<script>
    $('.alert-dismissible button.btn-close').click(() => {
        // cookie stuff here.
    });
</script>

你可以定位他们，上面是使用jquery。

Answer 2

使用 alert events 之一来触发您的代码

Event	Description
`close.bs.alert`	This event fires immediately when the `close` instance method is called.
`closed.bs.alert`	This event is fired when the alert has been closed (will wait for CSS transitions to complete).

$(".alert").on("closed.bs.alert", (e) => {
  console.log("here's where I would set a cookie")
  
  // doesn't work in StackSnippet sandbox
  // document.cookie = "favorite_framework=Bootstrap; SameSite=None; Secure";
})

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>

<div class="container">
  <div class="alert alert-warning alert-dismissible fade show" role="alert">
    <strong>Holy guacamole!</strong> You should check in on some of those fields below.
    <button type="button" class="close" data-dismiss="alert" aria-label="Close">
      <span aria-hidden="true">&times;</span>
    </button>
  </div>
</div>

关闭 bootstrap 警报时设置 cookie

seting a cookie when closing bootstrap allert

javascript

jquery

twitter-bootstrap