15个常用的javaScript正则表达式(收藏)

//用户名正则，4到16位（字母，数字，下划线，减号）var uPattern = /^[a-zA-Z0-9_-]{4,16}$/;//输出 trueconsole.log(uPattern.test("iFat3"));

//密码强度正则，最少6位，包括至少1个大写字母，1个小写字母，1个数字，1个特殊字符var pPattern = /^.*(?=.{6,})(?=.*/d)(?=.*[A-Z])(?=.*[a-z])(?=.*[!@#$%^&*? ]).*$/;//输出 trueconsole.log("=="+pPattern.test("iFat3#"));

//正整数正则var posPattern = /^/d+$/;//负整数正则var negPattern = /^-/d+$/;//整数正则var intPattern = /^-?/d+$/;//输出 trueconsole.log(posPattern.test("42"));//输出 trueconsole.log(negPattern.test("-42"));//输出 trueconsole.log(intPattern.test("-42"));

//正数正则var posPattern = /^/d*/.?/d+$/;//负数正则var negPattern = /^-/d*/.?/d+$/;//数字正则var numPattern = /^-?/d*/.?/d+$/;console.log(posPattern.test("42.2"));console.log(negPattern.test("-42.2"));console.log(numPattern.test("-42.2"));

//Email正则var ePattern = /^([A-Za-z0-9_/-/.])+/@([A-Za-z0-9_/-/.])+/.([A-Za-z]{2,4})$/;//输出 trueconsole.log(ePattern.test(65974040@qq.com));

//手机号正则var mPattern = /^[1][3][0-9]{9}$/;//输出 trueconsole.log(mPattern.test("13900000000"));

//身份证号（18位）正则var cP = /^[1-9]/d{5}(18|19|([23]/d))/d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)/d{3}[0-9Xx]$/;//输出 trueconsole.log(cP.test("11010519880605371X"));

//URL正则var urlP= /^((https?|ftp|file):////)?([/da-z/.-]+)/.([a-z/.]{2,6})([///w /.-]*)*//?$/;//输出 trueconsole.log(urlP.test(http://42du.cn));

//ipv4地址正则var ipP = /^(?:(?: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]?)$/;//输出 trueconsole.log(ipP.test("115.28.47.26"));

//RGB Hex颜色正则var cPattern = /^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$/;//输出 trueconsole.log(cPattern.test("#b8b8b8"));

//日期正则，简单判定,未做月份及日期的判定var dP1 = /^/d{4}(/-)/d{1,2}/1/d{1,2}$/;//输出 trueconsole.log(dP1.test("2017-05-11"));//输出 trueconsole.log(dP1.test("2017-15-11"));//日期正则，复杂判定var dP2 = /^(?:(?!0000)[0-9]{4}-(?:(?:0[1-9]|1[0-2])-(?:0[1-9]|1[0-9]|2[0-8])|(?:0[13-9]|1[0-2])-(?:29|30)|(?:0[13578]|1[02])-31)|(?:[0-9]{2}(?:0[48]|[2468][048]|[13579][26])|(?:0[48]|[2468][048]|[13579][26])00)-02-29)$/;//输出 trueconsole.log(dP2.test("2017-02-11"));//输出 falseconsole.log(dP2.test("2017-15-11"));//输出 falseconsole.log(dP2.test("2017-02-29"));

//QQ号正则，5至11位var qqPattern = /^[1-9][0-9]{4,10}$/;//输出 trueconsole.log(qqPattern.test("65974040"));

//微信号正则，6至20位，以字母开头，字母，数字，减号，下划线var wxPattern = /^[a-zA-Z]([-_a-zA-Z0-9]{5,19})+$/;//输出 trueconsole.log(wxPattern.test("RuilongMao"));

//车牌号正则var cPattern = /^[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领A-Z]{1}[A-Z]{1}[A-Z0-9]{4}[A-Z0-9挂学警港澳]{1}$/;//输出 trueconsole.log(cPattern.test("京K39006"));

//包含中文正则var cnPattern = /[/u4E00-/u9FA5]/;//输出 trueconsole.log(cnPattern.test("42度"));