Many important technologies and AJAX development modes can be obtained from existing knowledge. For example, an application that sends a request to the server must contain the request sequence, priority, timeout response, error processing, and callback. Many of these elements have already been included in the Web service, just like the current SOA. AJAX developers have a complete knowledge of system architecture. At the same time, with the maturity of the technology, there will be many places to improve, especially the usability of the UI part.
AJAX proposes a new development method based on various changing technologies and a strongly coupled client server environment. AJAX developers must understand the traditional MVC Architecture, which limits the boundaries between application layers. At the same time, developers also need to consider the external CS environment and use AJAX technology to redefine the MVC boundary. Most importantly, AJAX developers must disable the use of page collections to consider Web applications and consider them as a single page. Once the scope between the uidesign and the service architecture is strictly differentiated, developers need to update and change the technology set.
Always thinking about users
The biggest opportunity for AJAX is the user experience. In the process of making applications respond quickly and innovate, the rules defining Web applications are being rewritten. Therefore, developers must pay more attention to users. Now users are getting used to how to use Web applications. For example, users usually want to wait several seconds and screen refresh after each button is clicked, but AJAX is breaking this long-time situation. Therefore, the user needs to experience the response of Button clicking again.
Availability is another exciting aspect of AJAX and several novel technologies have been created. One of the most striking technologies is the "Yellow hiding" technology. Before data is updated, the user interface turns yellow, and the original color is restored immediately after the update is completed. AJAX developers free users from the load of Web applications. By carefully using the rich interfaces provided by AJAX, desktop developers will soon find that AJAX is their direction.
Several tools and technologies
With the rapid emergence of AJAX, I think developers are also looking forward to a rapid increase in this technology. Like any new technology, AJAX needs to be supported by an entire development tool/programming language and related technical systems.
The XMLHttpRequest object has been implemented in most browsers and has a simple interface that allows data to be transmitted from the client to the server, but does not interrupt the user's current operation. The data transmitted using XMLHttpRequest can be in any format, although the data in XML format is recommended from the name.
To view AJAX applications correctly, CSS is an important weapon for AJAX developers. CSS provides a mechanism for separating application styles and designs from the content. Although CSS plays a vital role in AJAX applications, it is also a major obstacle in building and creating cross-browser applications because different browser vendors support different CSS levels.
However, unlike the client, AJAX applications on the server are still based on the Java,. Net, and PHP languages. The main method in this field is not changed.
In this case, our interest in the Ruby on Rails framework has rapidly increased. More than a year ago, Ruby on Rails attracted a large number of developers to build Web and AJAX applications based on their powerful functions. Although there are still many Rapid Application Development Tools, Ruby on Rails seems to have reserved the ability to simplify the construction of AJAX applications.
These frameworks give developers more space to worry about cross-browser issues. Although these frameworks improve the developer's ability to build applications, the vendor has developed a more detailed packaging component solution for the user interface, therefore, some other factors need to be considered in the AJAX component market. For example, components that provide a universal user interface, such as the combo box and data grid, can be used to create a good user experience in applications that allows you to view and edit data in a similar way as a data table. However, these components not only encapsulate the user interface of the component, but also include the communication mode with the server. These components usually implement ASP. Net or JSF controls based on the TAG method.
In general, AJAX developers must follow up on the latest technologies as soon as possible and use highly productive tool sets. Successful AJAX developers also need to pay attention to their users to avoid scaling up any problems. In addition, AJAX developers also need to continuously create new ways to enhance the ease of use of Web applications.