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文件名称：高性能JavaScript编程中英对照版
文件大小：3.48MB
文件格式：PDF
更新时间：2017-07-28 12:43:56
高性能 JavaScript 中英对照版
第一章 Loading and Execution 加载和运行........................................................................................................ 2
第二章Data Access 数据访问............................................................................................................................ 26
第三章 DOM Scripting DOM编程.................................................................................................................... 56
第四章 Algorithms and Flow Control 算法和流程控制.................................................................................. 104
第五章 Strings and Regular Expressions 字符串和正则表达式...................................................................... 139
第六章 Responsive Interfaces 响应接口.......................................................................................................... 184
第七章 Ajax 异步JavaScript和XML ............................................................................................................. 216
第八章 Programming Practices 编程实践........................................................................................................ 261
第九章 Building and Deploying High-Performance JavaScript Applications ..................................................... 279
第十章 Tools 工具............................................................................................................................................ 306
[原版] [译文]
第一章 Loading and Execution 加载和运行
JavaScript performance in the browser is arguably the most important usability issue facing developers. The
problem is complex because of the blocking nature of JavaScript, which is to say that nothing else can happen
while JavaScript code is being executed. In fact, most browsers use a single process for both user interface (UI)
updates and JavaScript execution, so only one can happen at any given moment in time. The longer JavaScript
takes to execute, the longer it takes before the browser is free to respond to user input.
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JavaScript运行等多个任务，而同一时间只能有一个任务被执行。JavaScript
运行了多长时间，那么在浏览器空闲下来响应用户输入之前的等待时间就有多长。
On a basic level, this means that the very presence of a