Описание тега toastr

toastr is a JavaScript library for non-blocking notifications. It uses jQuery and the goal is to create a simple core library that can be customized and extended.

You can see a demo here

Stack Snippet Starter Pack

HTML:

<link href="//cdnjs.cloudflare.com/ajax/libs/toastr.js/2.1.2/toastr.css" rel="stylesheet"/>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/toastr.js/latest/js/toastr.js"></script>

JavaScript:

toastr.success("Hello World", "Toaster Title")