1.用户名: /^[a-z0-9_-]{3,16}$/
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3.十六进制:/^#?([a-f0-9]{6}|[a-f0-9]{3})$/
4.电子邮箱: /^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/
/^[a-z\d]+(\.[a-z\d]+)*@([\da-z](-[\da-z])?)+(\.{1,2}[a-z]+)+$/
5.URL:/^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/
6.IP地址: /((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/
/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/
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8.删除代码//注释:(?<!http:|\S)//.*$
9.Unicode编码中的汉字范围:/^[\u2E80-\u9FFF]+$/
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