Without the advanced use of JavaScript running in the browser, web applications have their LOGIC running on the server. This means a lot of page refreshes for potentially small updates to the user’s view. With AJAX, much of the logic surrounding user interactions can be moved to the client. This PRESENTS its own SET of challenges. Some examples of AJAX use include streaming large datasets to the browser that are MANAGED entirely in JavaScript. While JavaScript is a powerful language, the debugging facilities and options for error handling are very limited. Putting complex application logic on the client can take a lot of time, effort, and patience. ASP.NET AJAX allows you to naturally migrate some PARTS of the application processing to the client while leveraging partial page rendering to let the server control some aspects of the page view.

Without the advanced use of JavaScript running in the browser, web applications have their logic running on the server. This means a lot of page refreshes for potentially small updates to the user’s view. With AJAX, much of the logic surrounding user interactions can be moved to the client. This presents its own set of challenges. Some examples of AJAX use include streaming large datasets to the browser that are managed entirely in JavaScript. While JavaScript is a powerful language, the debugging facilities and options for error handling are very limited. Putting complex application logic on the client can take a lot of time, effort, and patience. ASP.NET AJAX allows you to naturally migrate some parts of the application processing to the client while leveraging partial page rendering to let the server control some aspects of the page view.