如何提高jQuery的性能 [英] How to increase performance of jQuery

问题描述

我有一个用jsp和jQuery编写的聊天应用程序。我已经为在某些URL中不断发布请求的线程使用了setTimeout方法。我的浏览器在一段时间后挂起，cpu利用率非常高。

i have an chat application written in jsp and jQuery. I have used the setTimeout method for threads who are continuously posting request in some URL. My browser is hanging after some time and cpu utilization is very high.

有没有办法提高JS的性能？

Is there any way to increase performance of JS?

推荐答案

检查一下：
http://www.tvidesign.co.uk/blog/improve-your-jquery-25-excellent-tips.aspx#tip1

它有一些非常好的建议，如：

It has some really good recommendations like:

• 通过缓存将选择操作降至最低


• 保持DOM操作至少


• 尽可能使用ID而不是类


• 为选择器提供上下文

• Keep selection operations to a minimum by caching
• Keep DOM manipulation to a minimum
• Use IDs instead of classes wherever possible
• Give your selectors a context

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