Bootbox official website
Bootbox.js is a small javaScript library which allows you to create programmatic dialog boxes using Bootstrap modals, without having to worry about creating, managing or removing any of the required DOM elements or JS event handlers.
Examples
Work With Nifty Effects
Sweet Alert official website
Sweet Alert Styles
Here’s a comparison of a standard error message. The first one uses the built-in alert-function, while the second is using sweetAlert. SweetAlert automatically centers itself on the page and looks great no matter if you're using a desktop computer, mobile or tablet. It's even highly customizeable, as you can see below!
With a function attached to the "Confirm" button :
And by passing a parameter, you can execute something else for "Cancel".