发布于 2016-06-04 23:46:52 | 122 次阅读 | 评论: 0 | 来源: 网友投递
V8 JavaScript 解析引擎
V8 是 Google 发布的开源 JavaScript 引擎，采用 C++ 编写，在 Google 的 Chrome 浏览器中被使用。V8 引擎可以独立运行，也可以用来嵌入到 C++ 应用程序中执行。
V8 5.1 发布了，
以下是一些值得关注的内容：
Exponentiation operator
This release contains support for the ES7 exponentiation operator, an infix notation to replace Math.pow.
let n = 3**3; // n == 27 n **= 2; // n == 729
Evolving spec
For more information on the complexities behind support for evolving specifications and continued standards discussion around web compatibility bugs and tail calls, see the V8 blog post ES6, ES7, and beyond.
V8 5.2 contains further optimizations to improve the performance of JavaScript built-ins, including improvements for Array operations like the isArray method, the in operator, andFunction.prototype.bind. This is part of ongoing work to speed up built-ins based on new analysis of runtime call statistics on popular web pages. For more information, see the V8 Google I/O 2016 talk and look for an upcoming blog post on performance optimizations gleaned from real-world websites.
Please check out our summary of API changes. This document gets regularly updated a few weeks after each major release.
Developers with an active V8 checkout can use 'git checkout -b 5.2 -t branch-heads/5.2' to experiment with the new features in V8 5.2. Alternatively you can subscribe to Chrome's Beta channel and try the new features out yourself soon.
详情：http://v8project.blogspot.com/2016/06/release-52.html
下载地址：https://chromium.googlesource.com/v8/v8/