8 BEST JAVASCRIPT ALERT LIBRARIES

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by Dejaswarooba dot icon Updated: Mar 1, 2023

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Here are the top Javascript libraries for displaying alerts on your websites. All these libraries are customizable and user-friendly; they are the perfect replacement for boring alert boxes.  


The alert() function is a helpful built-in JavaScript feature. When you want the information to reach the user, you utilize the alert() method. This feature will show text in a popup dialogue box on the screen. Unlike every text or message on the screen, the alert box is unique. A message or text is displayed in a popup with an "OK" button. The user cannot perform any tasks when an alert box is displayed on the screen until they hit the "OK" button. Events cause JavaScript functions to be called. There are three diverse types of popup boxes available in JavaScript: alert, confirm, and prompt.  


The greatest alert libraries in Javascript are presented below, carefully reviewed, and approved to benefit users inevitably. The above-mentioned alert() method can be customized, and the dialog box can be designed according to our needs using the libraries. 

sweetalert2- 

  • A responsive and highly customizable Javascript library. 
  • Comprehensible (WAI-ARIA) alternative to JavaScript's popup boxes. 
  • No dependencies required.

sweetalert2by sweetalert2

JavaScript doticonstar image 15981 doticonVersion:v11.7.12doticon
License: Permissive (MIT)

โœจ A beautiful, responsive, highly customizable and accessible (WAI-ARIA) replacement for JavaScript's popup boxes. Zero dependencies. ๐Ÿ‡บ๐Ÿ‡ฆ

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            sweetalert2by sweetalert2

            JavaScript doticon star image 15981 doticonVersion:v11.7.12doticon License: Permissive (MIT)

            โœจ A beautiful, responsive, highly customizable and accessible (WAI-ARIA) replacement for JavaScript's popup boxes. Zero dependencies. ๐Ÿ‡บ๐Ÿ‡ฆ
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                      notie- 

                      • Simple notification, input, and selection suite for javascript. 
                      • Alert users and confirm user choices. 
                      • Allow users to input information and select choices. 
                      • Allow users to select dates. 

                      notieby jaredreich

                      JavaScript doticonstar image 6286 doticonVersion:v4.3.0doticon
                      License: Permissive (MIT)

                      ๐Ÿ”” a clean and simple notification, input, and selection suite for javascript, with no dependencies

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                                notieby jaredreich

                                JavaScript doticon star image 6286 doticonVersion:v4.3.0doticon License: Permissive (MIT)

                                ๐Ÿ”” a clean and simple notification, input, and selection suite for javascript, with no dependencies
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                                          tinycon- 

                                          • Can manipulate favicon, add alert bubbles, and change images. 
                                          • Adds a single object to the global namespace, and no initialization required. 
                                          • All attributes of the alert bubble are optimizable.

                                          tinyconby tommoor

                                          JavaScript doticonstar image 5118 doticonVersion:Currentdoticon
                                          License: Permissive (MIT)

                                          A small library for manipulating the favicon, in particular adding alert bubbles and changing images.

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                                                    tinyconby tommoor

                                                    JavaScript doticon star image 5118 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                    A small library for manipulating the favicon, in particular adding alert bubbles and changing images.
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                                                              alertify.js- 

                                                              • Can be integrated with many Javascript frameworks. 
                                                              • Several built-in themes and additional features like asynchronous call-backs are supported. 
                                                              • It is an effective alert or notification system built using javascript. 

                                                              alertify.jsby fabien-d

                                                              JavaScript doticonstar image 4321 doticonVersion:Currentdoticon
                                                              no licences License: No License (null)

                                                              JavaScript Alert/Notification System

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                                                                        alertify.jsby fabien-d

                                                                        JavaScript doticon star image 4321 doticonVersion:Currentdoticonno licences License: No License

                                                                        JavaScript Alert/Notification System
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                                                                                  AlertifyJS- 

                                                                                  • a javascript framework for creating visually appealing browser dialogues and warnings. 
                                                                                  • No external dependencies required. 
                                                                                  • It is extensible, responsive, and can develop Unobtrusive notifications.

                                                                                  AlertifyJSby MohammadYounes

                                                                                  JavaScript doticonstar image 2006 doticonVersion:1.0.0doticon
                                                                                  License: Strong Copyleft (GPL-3.0)

                                                                                  A javascript framework for developing pretty browser dialogs and notifications.

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                                                                                            AlertifyJSby MohammadYounes

                                                                                            JavaScript doticon star image 2006 doticonVersion:1.0.0doticon License: Strong Copyleft (GPL-3.0)

                                                                                            A javascript framework for developing pretty browser dialogs and notifications.
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                                                                                                      react-native-flash-message- 

                                                                                                      • A react native module for creating flash notifications as well as alerts. 
                                                                                                      • All components are built for global use. 
                                                                                                      • By default, all messages will be shown with transitions. 
                                                                                                      JavaScript doticonstar image 1225 doticonVersion:v0.4.0doticon
                                                                                                      License: Permissive (MIT)

                                                                                                      React Native flashbar and top notification alert utility

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                                                                                                                react-native-flash-messageby lucasferreira

                                                                                                                JavaScript doticon star image 1225 doticonVersion:v0.4.0doticon License: Permissive (MIT)

                                                                                                                React Native flashbar and top notification alert utility
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                                                                                                                          smoke.js- 

                                                                                                                          • Customized alert system for javascript that is independent of frameworks. 
                                                                                                                          • This alert system uses CSS animations and background and, thus, is lightweight. 
                                                                                                                          • It is simple to set up and simpler to change the style. 

                                                                                                                          smoke.jsby hxgf

                                                                                                                          JavaScript doticonstar image 937 doticonVersion:Currentdoticon
                                                                                                                          no licences License: No License (null)

                                                                                                                          framework-agnostic styled alert system for javascript

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                                                                                                                                    smoke.jsby hxgf

                                                                                                                                    JavaScript doticon star image 937 doticonVersion:Currentdoticonno licences License: No License

                                                                                                                                    framework-agnostic styled alert system for javascript
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                                                                                                                                              bootbox- 

                                                                                                                                              • Uses Twitterโ€™s Bootstrap framework. 
                                                                                                                                              • JavaScript alert(), confirm(), and other customizable window wrappers. 
                                                                                                                                              • It is built with the help of Bootstrap and jQuery. 

                                                                                                                                              bootboxby makeusabrew

                                                                                                                                              JavaScript doticonstar image 5008 doticonVersion:v6.0.0doticon
                                                                                                                                              License: Others (Non-SPDX)

                                                                                                                                              Wrappers for JavaScript alert(), confirm() and other flexible dialogs using Twitter's bootstrap framework

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                                                                                                                                                        bootboxby makeusabrew

                                                                                                                                                        JavaScript doticon star image 5008 doticonVersion:v6.0.0doticon License: Others (Non-SPDX)

                                                                                                                                                        Wrappers for JavaScript alert(), confirm() and other flexible dialogs using Twitter's bootstrap framework
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