Javascrp中几个常用的字符串验证

【正则表达式】<!-- Writed by Zhong@IECN 2004.3.26 --><script language="javascript">var reIp = /^([01]?\d{1,2}|2[0-4]\d|25[0-5])(\.([01]?\d{1,2}|2[0-4]\d|25[0-5])){3}$/; //IPvar reEml = /^[\w\-\.]+@[a-z0-9]+(\-[a-z0-9]+)?(\.[a-z0-9]+(\-[a-z0-9]+)?)*\.[a-z]{2,4}$/i; //E-mailvar reTel = /^(...