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Chrome V8引擎中的JavaScript数组实现分析与性能优化 被引量：9

Implementation Analysis and Performance Optimization for JavaScript Array in Chrome V8
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摘要 随着实际应用中JavaScript程序的复杂度日益提高,程序执行的性能问题变得突出,而优化JavaScript程序中数组的使用方式可以提高程序效率。通过分析JavaScript数组的特点,结合广泛应用的Chrome V8引擎的源程序,描述V8对JavaScript数组的实现细节,重点分析Fast Elements和Dictionary Elements两种数组存储模式,给出对JavaScript数组性能优化的基本原则,并举例分析4个实际应用中可以优化的程序片段。 With the complexity of JavaScript applications increasing, performance issues of JavaScript become increasingly promi-nent, but to optimize the use of JavaScript array can improve program efficiency.This paper, by analyzing the characteristics of JavaScript arrays and reviewing the source code of Chrome V8 JavaScript engine, describes the implementation details for JavaS-cript array in V8, and focuses on the Fast Elements and Dictionary Elements array storage modes.It also gives the basic princi-ples of performance optimization of JavaScript array and four examples to show how to analyze and optimize programs in practical applications.
作者 刘旭
机构地区 SAP中国研究院商务智能部
出处 《计算机与现代化》 2014年第10期66-70,共5页 Computer and Modernization
关键词 V8 CHROME JAVASCRIPT 数组 性能 优化 V8 Chrome JavaScript array performance optimization
分类号 TP312 [自动化与计算机技术—计算机软件与理论] TP314 [自动化与计算机技术—计算机软件与理论]
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参考文献15

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二级参考文献15

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共引文献8

同被引文献48

引证文献9

二级引证文献12

计算机与现代化
2014年 第10期

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