bootstrap alert dismiss not working code example

Example 1: bootstrap alerts

<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>

Example 2: bootstrap flash message

<div class="alert alert-success 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>

Example 3: bootstrap alert box

Alerts in Bootstrap:
--------------------------------
Alert classes you can use to check
.alert-primary
.alert-secondary
.alert-success
.alert-danger
.alert-warning
.alert-info
.alert-light
.alert-dark

Simple alert:
-------------
<div class="alert alert-primary" role="alert">
  This is a primary alert—check it out!
</div>

Alert with close button and decriptive feature:
------------------------------------------------
<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>

Trigger via javascript:
$(".alert").alert();

Example 4: my bootstrap alerts code is not closing

<!-- jquery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>

<!-- bootstrap -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.5/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">


<div class="alert alert-success alert-dismissible" role="alert">
  <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">×</span>
  </button>
  <strong>Yay</strong> Your email has been added!
</div>

Example 5: bootstrap dismissible alert not working

<div class="alert alert-warning alert-dismissible" role="alert">
  <span type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></span>
  <strong>Warning!</strong> Still on beta stage.
</div>

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