JavaScript 和线程 [英] JavaScript and Threads
问题描述
有没有办法在 JavaScript 中实现多线程?
Is there some way to do multi-threading in JavaScript?
推荐答案
参见 http://caniuse.com/#search=worker 获取最新的支持信息.
See http://caniuse.com/#search=worker for the most up-to-date support info.
以下是大约 2009 年的支持状态.
The following was the state of support circa 2009.
你想用谷歌搜索的词是JavaScript Worker Threads
除了 Gears 之外，目前没有任何可用的东西，但有很多关于如何实现它的讨论所以我想看这个问题，因为答案无疑会在未来改变.
Apart from from Gears there's nothing available right now, but there's plenty of talk about how to implement this so I guess watch this question as the answer will no doubt change in future.
以下是 Gears 的相关文档:WorkerPool API
Here's the relevant documentation for Gears: WorkerPool API
WHATWG 有一份针对工作线程的建议草案:Web Workers
WHATWG has a Draft Recommendation for worker threads: Web Workers
还有 Mozilla 的 DOM 工作线程
And there's also Mozilla’s DOM Worker Threads
更新: 2009 年 6 月，浏览器支持 JavaScript 线程的当前状态
Update: June 2009, current state of browser support for JavaScript threads
Firefox 3.5 有网络工作者.网络工作者的一些演示，如果你想看到他们的行动:
Firefox 3.5 has web workers. Some demos of web workers, if you want to see them in action:
- 模拟退火(试试看"链接)
- 太空入侵者(链接在帖子末尾)
- MoonBat JavaScript 基准(第一个链接)
- Simulated Annealing ("Try it" link)
- Space Invaders (link at end of post)
- MoonBat JavaScript Benchmark (first link)
Gears 插件也可以安装在 Firefox 中.
The Gears plugin can also be installed in Firefox.
Safari 4 和 WebKit nightlies 有工作线程:
Chrome 内置了 Gears，因此它可以执行线程，尽管它需要用户的确认提示(并且它对网络工作者使用不同的 API，尽管它可以在任何浏览器中使用安装了 Gears 插件):
Chrome has Gears baked in, so it can do threads, although it requires a confirmation prompt from the user (and it uses a different API to web workers, although it will work in any browser with the Gears plugin installed):
- Google Gears WorkerPool 演示(不是一个很好的例子因为它运行速度太快而无法在 Chrome 和 Firefox 中进行测试，尽管 IE 运行它的速度足够慢，以至于可以看到它阻止交互)
- Google Gears WorkerPool Demo (not a good example as it runs too fast to test in Chrome and Firefox, although IE runs it slow enough to see it blocking interaction)
IE8 和 IE9 只能在安装了 Gears 插件的情况下执行线程
IE8 and IE9 can only do threads with the Gears plugin installed
这篇关于JavaScript 和线程的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
