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.

The Hong Kong University of Science and Technology
Skills you'll gain: Server Side, Restful API, Ajax, Node.JS, Full-Stack Web Development, Web Applications, Web Servers, Web Development, Model View Controller, Javascript, PHP (Scripting Language), Application Programming Interface (API), Authentications, JSON, Hypertext Markup Language (HTML), Software Architecture, Real Time Data
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Postman API Platform, OAuth, Application Programming Interface (API), Performance Testing, Security Testing, Software Testing, Restful API, Authentications, Web Development Tools, Application Security
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: PHP (Scripting Language), Web Applications, Responsive Web Design, MySQL, Web Design and Development, Server Side, HTML and CSS, Data Import/Export, Back-End Web Development, Hypertext Markup Language (HTML), Database Development, File Management, SQL, Data Structures
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Javascript, User Interface (UI), Web Development, Web Development Tools, Scripting, Hypertext Markup Language (HTML)
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: WordPress, Ajax, Content Management Systems, Web Development, PHP (Scripting Language), Database Development, MySQL, Javascript and jQuery, Cascading Style Sheets (CSS)
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: React.js, Performance Tuning, Web Development Tools, Front-End Web Development, TypeScript, Ajax, JavaScript Frameworks, Application Performance Management, UI Components, User Interface (UI)
Advanced · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Javascript, HTML and CSS, Scripting, Web Design and Development, Event-Driven Programming, Programming Principles, Responsive Web Design, Integrated Development Environments, Debugging, Data Validation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Java Programming, Java, Test Automation, Scripting, Web Development Tools, Automation, Cascading Style Sheets (CSS), Debugging, Hypertext Markup Language (HTML)
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Test Automation, Test Tools, Software Testing, Automation, Node.JS, Configuration Management
Beginner · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: HTML and CSS, Javascript, Responsive Web Design, Ajax, Front-End Web Development, Web Design, Web Applications, Hypertext Markup Language (HTML), Browser Compatibility, Web Development, Cascading Style Sheets (CSS), Usability, Cross Platform Development
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Java Platform Enterprise Edition (J2EE), Object-Relational Mapping, Java, Application Servers, Middleware, Application Deployment, Enterprise Architecture, Server Side, Transaction Processing, Business Logic
Intermediate · Course · 1 - 4 Weeks

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