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js常用功能集合1.验证邮箱function isEmail (number){ return /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((.[a-zA-Z0-9_-]{2,3}){1,2})$/.test(number);}2.验证手机号码function isMobile (number) { return /^1[0-9]{10}$/.test(number)}3.验证是否url地址function isURL(number){ re