9个常用的正则表达式-sunziren

正数字：/^[1-9]{1}[0-9]*$|^0{1}\.{1}[0-9]+$|^[1-9]{1}[0-9]*\.{1}[0-9]+$/

用户名：/^[a-z0-9_-]{3,16}$/

密码：/^[a-z0-9_-]{6,18}$/

十六进制值：/^#?([a-f0-9]{6}|[a-f0-9]{3})$/

电子邮箱：/^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})//[a−z\d]+(\.[a−z\d]+)∗@([\da−z](−[\da−z])?)+(\.1,2[a−z]+)+/

URL：/^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/

IP地址1：/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/

IP地址2：/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/

HTML 标签：/^<([a-z]+)([^<]+)*(?:>(.*)<\/\1>|\s+\/>)$/

Unicode编码中的汉字范围：/^[\u2E80-\u9FFF]+$/