本书结合WEB2.0以来WEB开发领域的最新形式和特点，介绍了网站性能问题的现状、产生原因，以及改善或解决性能问题的原则、技术技巧和最佳实践。重点关注网页的行为特征，阐释优化AJAX、CSS、Javascr ipt、Flash和图片处理等要素的技术，全面涵盖浏览器端性能问题的方方面面。-WEB development since WEB2.0 book combines the latest forms and features of the field, describes the status of the site performance problems, causes, and to improve or solve the problem of the principles of performance, technical skills and best practices. Focus on the behavioral characteristics of web page to explain the optimization of AJAX, CSS, Javascr ipt, Flash and image processing elements of the technology, full browser performance issues covering all aspects.