Ajax courses can help you learn asynchronous web requests, dynamic content updates, and improved user interfaces. You can build skills in handling JSON data, managing server responses, and optimizing web performance. Many courses introduce tools like jQuery and XMLHttpRequest, that support implementing Ajax techniques and enhancing user experience on websites.

Coursera
Skills you'll gain: Data Visualization, Interactive Data Visualization, Visualization (Computer Graphics), JSON, Plot (Graphics), Data Mapping, Javascript
★ 3.7 (7) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: React.js, UI Components, User Interface (UI), Web Development, Business Logic
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Test Script Development, Test Automation, Eclipse (Software), Software Testing, Scripting, Test Tools, UI Components, Integrated Development Environments, Web Applications, Java, Functional Testing
★ 4.5 (362) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: JavaScript Frameworks, Frontend Performance, Frontend Integration, Video Game Development, Development Environment
Intermediate · Course · 3 - 6 Months

EDUCBA
Skills you'll gain: Ajax, Web Design and Development, Java Platform Enterprise Edition (J2EE), jQuery, Cascading Style Sheets (CSS), Web Applications, Scripting Languages, Javascript and jQuery, Web Development, Java, Hypertext Markup Language (HTML), Middleware, Model View Controller, Javascript, Front-End Web Development, Hibernate (Java), Service Oriented Architecture, Back-End Web Development
★ 4.3 (13) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Extensible Markup Language (XML), Ajax, Extensible Languages and XML, Web Design and Development, Java Platform Enterprise Edition (J2EE), jQuery, Cascading Style Sheets (CSS), Data Validation, Web Applications, Scripting Languages, Javascript and jQuery, Web Development, Hypertext Markup Language (HTML), Middleware, Model View Controller, Javascript, Interoperability, Data Integrity, Java, Data Mapping
★ 4.5 (73) · Beginner · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: React Native, Mobile Development, Responsive Web Design, Cross Platform Development, Mobile Development Tools, UI Components, Application Development, Ajax, User Interface (UI), React.js, JavaScript Frameworks, Data Persistence, Data Store, Data Storage Technologies, Context Management, Development Environment, Javascript, Data Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Webpack, Frontend Performance, Search Engine Optimization, Web Development Tools, Web Analytics and SEO, Performance Tuning, Build Tools, Debugging, Usability Testing, Web Development, Software Testing, Test Tools, Front-End Web Development, Functional Testing, Test Automation, Continuous Monitoring, Development Testing, Computer Programming Tools, JavaScript Frameworks, WordPress
★ 4.5 (38) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cucumber (Software), Selenium (Software), Apache Maven, Java, Java Programming, Object Oriented Programming (OOP), Issue Tracking, Build Tools, Test Automation, Behavior-Driven Development, Test Script Development, Test Case, Software Testing, Data Structures, Package and Software Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Event-Driven Programming, Javascript, Application Programming Interface (API), Game Design, Restful API, Software Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Java, Java Programming, File I/O, File Management, Cascading Style Sheets (CSS), Extensible Markup Language (XML), Test Automation, Extensible Languages and XML, Test Script Development, Web Scraping, Apache, Web Development Tools, Data Import/Export, Verification And Validation, HTML and CSS, Hypertext Markup Language (HTML)
Intermediate · Course · 1 - 3 Months

Skills you'll gain: jQuery, Ajax, Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Web Content Accessibility Guidelines, Usability, Javascript and jQuery, Web Design and Development, Web Development, Hypertext Markup Language (HTML), Usability Testing, Javascript, Application Deployment, Web Design, Interactive Data Visualization, Event-Driven Programming, Semantic Web, Web Language, Web Applications
Beginner · Specialization · 1 - 3 Months