高性能javascript编程

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1、《高性能JavaScript编程》原文2010年3月23日首发，刘新翻译，欢迎指正！http://blog.sina.com.cn/situdesign[原版][译文]第一章LoadingandExecution加载和运行........................................................................................................2第二章DataAccess数据访问.........................................................

2、...................................................................26第三章DOMScriptingDOM编程....................................................................................................................56第四章AlgorithmsandFlowControl算法和流程控制.................................................

3、.................................104第五章StringsandRegularExpressions字符串和正则表达式......................................................................139第六章ResponsiveInterfaces响应接口..........................................................................................................184第七章Aj

4、ax异步JavaScript和XML.............................................................................................................216第八章ProgrammingPractices编程实践........................................................................................................261第九章BuildingandDeployingHig

5、h-PerformanceJavaScriptApplications.....................................................279第十章Tools工具............................................................................................................................................306第一章LoadingandExecution加载和运行JavaScriptperforman

6、ceinthebrowserisarguablythemostimportantusabilityissuefacingdevelopers.TheproblemiscomplexbecauseoftheblockingnatureofJavaScript,whichistosaythatnothingelsecanhappenwhileJavaScriptcodeisbeingexecuted.Infact,mostbrowsersuseasingleprocessforbothuserinterface(UI)updatesandJavaScriptexecution,

7、soonlyonecanhappenatanygivenmomentintime.ThelongerJavaScripttakestoexecute,thelongerittakesbeforethebrowserisfreetorespondtouserinput.JavaScript在浏览器中的性能，可认为是开发者所要面对的最重要的可用性问题。此问题因JavaScript的阻塞特征而复杂，也就是说，当JavaScript运行时其他的事情不能被浏览器处理。事实上，大多数浏览器使用单进程处理UI更新和JavaScr