In modern web development, developers can now quickly create popup boxes or other interactive components with the <DIALOG> element introduced in HTML 5.2.
<dialog open> <p>CSSSCRIPT.COM</p> </dialog>
However, what needs to be worth noting is that the new <DIALOG> element only works with Chrome, Firefox, Opera, and Android webview.
Developers who are running cross-platform web apps might need a Polyfill to enable the <DIALOG> support on the Edge and Apple Safari.
Or use a third-party JavaScript dialog library:
Here is a list of the 10 best JavaScript dialog/popup box plugins that help you create customizable, advanced, cross-browser alert/confirm/prompt dialog boxes. Feel free to download and use them in your next web project. Have fun.
Originally Published Oct 22 2019, updated Feb 13 2023
1. sweetalert2
A beautiful, responsive, highly customizable and accessible (WAI-ARIA) replacement for JavaScript’s popup boxes. Zero dependencies.
2. Highly Configurable JS Modal & Dialog Box Library – Vex
A modern dialog library which is highly configurable, easily stylable, and gets out of the way. You’ll love vex because it’s tiny (5.6kb minified and gzipped), has a clear and simple API, works on mobile devices, and can be customized to match your style in seconds.
3. Cool Notification JavaScript Library – Noty

A cool and powerful Notification Plugin JavaScript library that allows you to create several types of messages as an alternative to the standard alert dialog. noty can be placed anywhere on your website and you can customize the text, animation, speed, buttons and much more with its options in the API.
4. Feature-rich Dialog & Notification Popup Library – AlertifyJS
A feature-rich JavaScript popup library to create responsive, flexible dialog boxes and notification popups on the web application.
5. Pure JavaScript Modal Popup with CSS3 Transitions – tingle.js
tingle.js helps you create fullscreen, rich-content modal popup with pure JavaScript and CSS3 transitions for open / close animations.
6. Lightweight Modal Dialog With Plain JavaScript and Animate.css – rmodal.js
A pure JavaScript library to create animated modal dialogs that use Animate.css for amazing CSS3 based open/close animations. Works perfectly with Bootstrap framework.
7. Elegant Notification Popup JavaScript Library – Notiflix

A pure JavaScript library for client-side non-blocking notifications, popup boxes, loading indicators, and more that makes your web projects much better.
8. Ply
Amazing layer/modal/dialog system.
9. Pretty Animated Popup JavaScript Library – x0popup
Just another JavaScript popup library which creates animated, good-looking and highly customizable popup windows to replace the native alert, confirm, prompt dialog boxes.
10. iOS Style Loading Indicator & Alert/Confirm Dialog Plugin – Popup.js
A native JavaScript popup component that help developer create iOS style loading spinners and alert & confirmation dialog boxes on the web application.
Read More:
To display complex web content (e.g. forms, images, videos) in a popup box, you might need a customizable modal window to overlay the content on the top of page.
Check out our Modal & Popup section for more information.