15个常用的javascript正则表达式
用户名正则
var uPattern = /^[a-zA-Z0-9_-]{4,16}$/;
console.log(uPattern.test("iFat3"));
密码强度正则
var pPattern = /^.*(?=.{6,})(?=.*\d)(?=.*[A-Z])(?=.*[a-z])(?=.*[!@#$%^&*? ]).*$/;
console.log("=="+pPattern.test("iFat3#"));
整数正则
var posPattern = /^\d+$/;
var negPattern = /^-\d+$/;
var intPattern = /^-?\d+$/;
console.log(posPattern.test("42"));
console.log(negPattern.test("-42"));
console.log(intPattern.test("-42"));
数字正则
var posPattern = /^\d*\.?\d+$/;
var negPattern = /^-\d*\.?\d+$/;
var numPattern = /^-?\d*\.?\d+$/;
console.log(posPattern.test("42.2"));
console.log(negPattern.test("-42.2"));
console.log(numPattern.test("-42.2"));
Email正则
var ePattern = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
console.log(ePattern.test("65974040@qq.com"));
手机号码正则
var mPattern = /^((13[0-9])|(14[5|7])|(15([0-3]|[5-9]))|(18[0,5-9]))\d{8}$/;
console.log(mPattern.test("18600000000"));
身份证号正则
var cP = /^[1-9]\d{5}(18|19|([23]\d))\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/;
console.log(cP.test("11010519880605371X"));
URL正则
var urlP= /^((https?|ftp|file):\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/;
console.log(urlP.test("http://42du.cn"));
IPv4地址正则
var ipP = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;
console.log(ipP.test("115.28.47.26"));
十六进制颜色正则
var cPattern = /^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$/;
console.log(cPattern.test("#b8b8b8"));
日期正则
var dP1 = /^\d{4}(\-)\d{1,2}\1\d{1,2}$/;
console.log(dP1.test("2017-05-11"));
console.log(dP1.test("2017-15-11"));
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)$/;
console.log(dP2.test("2017-02-11"));
console.log(dP2.test("2017-15-11"));
console.log(dP2.test("2017-02-29"));
QQ号码正则
var qqPattern = /^[1-9][0-9]{4,10}$/;
console.log(qqPattern.test("65974040"));
微信号正则
var wxPattern = /^[a-zA-Z]([-_a-zA-Z0-9]{5,19})+$/;
console.log(wxPattern.test("RuilongMao"));
车牌号正则
var cPattern = /^[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领A-Z]{1}[A-Z]{1}[A-Z0-9]{4}[A-Z0-9挂学警港澳]{1}$/;
console.log(cPattern.test("京K39006"));
包含中文正则
var cnPattern = /[\u4E00-\u9FA5]/;
console.log(cnPattern.test("42度"));