Ajax 主流框架与Extjs（国外英文资料）.docVIP

Ajax 主流框架与Extjs（国外英文资料） Ajax mainstream framework and ExtJS JQuery, Prototype, and YUI are all very core JS libraries. While YUI and the most recent JQuery have built a series of widgets for themselves, there is no real integrated and complete development platform. Even if is the core of these low-level library is very good, but when put into the real development environment, developers still need to do a lot of work to improve the lack in many places. And Ext is trying to fill those gaps. Only Dojo, like Ext, is trying to provide an integrated development platform in the mainstream open source framework. We think that Ext can provide a more cohesive application framework than Dojos great toolkit. Exts components are designed to work seamlessly together with other Ext components. Interoperability of the smooth, without a close cooperation team, also must always be emphasized the unity on the two aspects of design and development of the target, and this is a lot of open source projects have failed to do it. Starting from the construction of each component, we always emphasize the appearance of the component, performance, interoperability and scalability, and we think the component has reached the requirements of these points. Ext can definitely be used by itself. In fact, in addition to specific requirements, it is recommended that you use Ext alone, in which case the file occupies a smaller footprint, and supports and integrates more closely. We also support with use of jQuery, YUI or Prototype integration, as the role of lower libraries, to provide processing a variety of core services, such as DOM and event handling, Ajax connection and animation effects. One reason to use the integration approach is that they already have certain devices and Ext does not have native support -- like YUIs History control is a typical example. At this point, Ext needs to rely on the bottom of the YUI library to implement the History control, so that it also saves the memory footpri