<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[jlongs的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/jlongs</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; jlongs]]></copyright><item><title><![CDATA[ceil  floor  round]]></title><link>https://blog.youkuaiyun.com/jlongs/article/details/5293479</link><guid>https://blog.youkuaiyun.com/jlongs/article/details/5293479</guid><author>jlongs</author><pubDate>Sat, 06 Feb 2010 08:51:00 +0800</pubDate><description><![CDATA[Math.ceil()    将小数部分一律向整数部分进位。 Math.floor()   一律舍去，仅保留整数。 Math.round()   进行四舍五入。]]></description><category></category></item></channel></rss>