Implementation Analysis and Performance Optimization for JavaScript Array in Chrome V8

doi:10.3969/j.issn.1006-2475.2014.10.016

Abstract

Abstract: With the complexity of JavaScript applications increasing, performance issues of JavaScript become increasingly prominent, 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 JavaScript array in V8, and focuses on the Fast Elements and Dictionary Elements array storage modes. It also gives the basic principles of performance optimization of JavaScript array and four examples to show how to analyze and optimize programs in practical applications.


Key words: V8, Chrome, JavaScript, array, performance, optimization

CLC Number:

TP312
TP314

LIU Xu. Implementation Analysis and Performance Optimization for JavaScript Array in Chrome V8[J]. Computer and Modernization, doi: 10.3969/j.issn.1006-2475.2014.10.016.

References

［1］ David Flanagan. JavaScript: The Definitive Guide［M］. 6th ed. USA: OReilly Media, 2011.
［2］ W3schools.com. Browser Statistics［EB/OL］. http://www.w3schools.com/browsers/browsers_stats.asp, 2014-06-22.
［3］ V8 JavaScript Engine Developers. Project Information［EB/OL］. https://code.google.com/p/v8/, 2014-06-22.
［4］ Open Source Initiative. The BSD 3-Clause License［EB/OL］. http://opensource.org/licenses/BSD-3-Clause, 2014-06-22.
［5］ V8 JavaScript Engine Developers. Design Elements［EB/OL］. https://developers.google.com/v8/design, 2014-06-22.
［6］ Brian W Kernighan, Dennis M Ritchie. C Programming Language［M］. 2nd ed. Englewood Cliffs: Prentice Hall, 1988.
［7］ Stoyan Stefanov. JavaScript Patterns［M］. USA: OReilly Media, 2010.
［8］ Douglas Crockford. JavaScript: The Good Parts［M］. USA: OReilly Media, 2008.
［9］李世胜,程步奇,李晓峰,等. 基于预测的JavaScript类型系统研究［J］. 计算机研究与发展, 2012,49(2):421-431.
［10］V8 JavaScript Engine Members. V8 JavaScript Engine Source Code［CP/OL］. http://v8.googlecode.com/svn/trunk/src/runtime.cc, 2014-05-30.
［11］〖JP2〗Jay Conrod. A Tour of V8: Object Representation ［EB/OL］. http://jayconrod.com/posts/52/a-tour-of-v8-object-representation, 2014-06-22.〖JP〗
［12］V8 JavaScript Engine Members. V8 JavaScript Engine Source Code［CP/OL］. http://v8.googlecode.com/svn/trunk/src/objects.cc, 2014-05-30.
［13］V8 JavaScript Engine Members. V8 JavaScript Engine Source Code［CP/OL］. http://v8.googlecode.com/svn/trunk/src/objects.h, 2014-05-30.
［14］雷军程,柳小文,朱鸿鹏. JS分支结构性能优化研究［J］. 邵阳学院学报(自然科学版), 2011,8(4):27-29.
［15］Chris Wilson. Performance Tips for JavaScript in V8 ［EB/OL］. http://www.html5rocks.com/en/tutorials/speed/v8/, 2012-10-11.

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