如果你使用 JavaScript 构建交互丰富的 Web 应用，那么 JavaScript 代码可能是造成你的Web应用速度变慢的主要原因。本书揭示的技术和策略能帮助你在开发过程中消除性能瓶颈。你将会了解如何提升各方面的性能，包括代码的加载、运行、DOM 交互、页面生存周期等。雅虎的前端工程师 Nicholas C. Zakas 和其他五位 JavaScript 专家介绍了页面代码加载的**方法和编程技巧，来帮助你编写更为高效和快速的代码。你还会了解到构建和部署文件到生产环境的**实践，以及有助于定位线上问题的工具。

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