常用正则表达式（regular expression）

需要转义的符号
$()*+.[]?^{},|


IP地址(IP address)

ipv4:
RegExp:
^((25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)\.){3}(25[0-5]|2[0-4]\d|1\d{2}|[1-9]?\d)$

Jquery:
(/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/.test(value) && (RegExp.$1 <256 && RegExp.$2<256 && RegExp.$3<256 && RegExp.$4<256));

ipv6:

RegExp:
^(([\da-fA-F]{1,4}):){7}([\da-fA-F]{1,4})$

Jquery:
/^(([\da-fA-F]{1,4}):){7}([\da-fA-F]{1,4})$/.test(value);


字母数字或下划线(letter, digit or underline)

RegExp:
^[a-zA-Z0-9_]*$

Jquery:
/^[a-zA-Z0-9_]*$/.test(value);


3-20位字母或数字开头，允许字母数字下划线(start with letter or digit, length 3-20, allow underline)

RegExp:
^[a-zA-Z0-9][a-zA-Z0-9_]{2,19}$

Jquery:
/^[a-zA-Z0-9][a-zA-Z0-9_]{2,19}$/.test(value);


真实姓名验证，姓名只能为2-30个汉字(name verification, length 2-30 Chinese character)

RegExp:
^[\u4e00-\u9FA5]{2,30}$

Jquery:
/^[\u4e00-\u9FA5]{2,30}$/.test(value);


字符验证(all sorts of letter or digit or underline)

RegExp:
^[\u0391-\uFFE5\w]+$

Jquery:
/^[\u0391-\uFFE5\w]+$/.test(value);


手机号码验证(mobile phone number)

RegExp:
^1([38][0-9]|4[579]|5[0-3,5-9]|6[6]|7[0135678]|9[89])\d{8}$

Jquery:
(length == 11 && /^1([38][0-9]|4[579]|5[0-3,5-9]|6[6]|7[0135678]|9[89])\d{8}$/.test(value));


QQ号码验证(QQ)

RegExp:
^[1-9][0-9]{4,}$

Jquery:
/^[1-9][0-9]{4,}$/.test(value);


身份证号(ID)

RegExp: (not perfect)
^[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]$)|(^[1-9]\d{5}\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{2}[0-9Xx]$

Jquery:
    var area={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"西藏",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"}
    var idcard,Y,JYM;
    var S,M;
    var idcard_array = new Array();
    idcard_array = idcard.split("");
    //地区检验
    if(area[parseInt(idcard.substr(0,2))]==null) return Errors[4];
    //身份号码位数及格式检验
    switch(idcard.length){
        case 15:
            if ( (parseInt(idcard.substr(6,2))+1900) % 4 == 0 || ((parseInt(idcard.substr(6,2))+1900) % 100 == 0 && (parseInt(idcard.substr(6,2))+1900) % 4 == 0 )){
                ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$/;//测试出生日期的合法性
            } else {
                ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$/;//测试出生日期的合法性
            }
            if(ereg.test(idcard)) return Errors[0];
            else return Errors[2];
            break;
        case 18:
            //18 位身份号码检测
            //出生日期的合法性检查
            //闰年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))
            //平年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))
            if ( parseInt(idcard.substr(6,4)) % 4 == 0 || (parseInt(idcard.substr(6,4)) % 100 == 0 && parseInt(idcard.substr(6,4))%4 == 0 )){
                ereg=/^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$/;//闰年出生日期的合法性正则表达式
            } else {
                ereg=/^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$/;//平年出生日期的合法性正则表达式
            }
            if(ereg.test(idcard)) {//测试出生日期的合法性
                //计算校验位
                S = (parseInt(idcard_array[0]) + parseInt(idcard_array[10])) * 7
                    + (parseInt(idcard_array[1]) + parseInt(idcard_array[11])) * 9
                    + (parseInt(idcard_array[2]) + parseInt(idcard_array[12])) * 10
                    + (parseInt(idcard_array[3]) + parseInt(idcard_array[13])) * 5
                    + (parseInt(idcard_array[4]) + parseInt(idcard_array[14])) * 8
                    + (parseInt(idcard_array[5]) + parseInt(idcard_array[15])) * 4
                    + (parseInt(idcard_array[6]) + parseInt(idcard_array[16])) * 2
                    + parseInt(idcard_array[7]) * 1
                    + parseInt(idcard_array[8]) * 6
                    + parseInt(idcard_array[9]) * 3 ;
                Y = S % 11;
                M = "F";
                JYM = "10X98765432";
                M = JYM.substr(Y,1);//判断校验位
                if(M == idcard_array[17]) return Errors[0]; //检测ID的校验位
                else return Errors[3];
            }
            else return Errors[2];
            break;
        default:
            return Errors[1];
            break;


ZIP范围(ZIP range)

RegExp:
^90[2-5]\d\{2\}-\d{4}$

Jquery:
/^90[2-5]\d\{2\}-\d{4}$/.test(value);


ZIP code US

RegExp:
\d{5}-\d{4}$|^\d{5}$

Jquery:
/\d{5}-\d{4}$|^\d{5}$/.test(value);


VIN

Jquery:
    if (v.length !== 17) {
        return false;
    }
    var i, n, d, f, cd, cdv;
    var LL = ["A","B","C","D","E","F","G","H","J","K","L","M","N","P","R","S","T","U","V","W","X","Y","Z"];
    var VL = [1,2,3,4,5,6,7,8,1,2,3,4,5,7,9,2,3,4,5,6,7,8,9];
    var FL = [8,7,6,5,4,3,2,10,0,9,8,7,6,5,4,3,2];
    var rs = 0;
    for(i = 0; i < 17; i++){
        f = FL[i];
        d = v.slice(i,i+1);
        if (i === 8) {
            cdv = d;
        }
        if (!isNaN(d)) {
            d *= f;
        } else {
            for (n = 0; n < LL.length; n++) {
                if (d.toUpperCase() === LL[n]) {
                    d = VL[n];
                    d *= f;
                    if (isNaN(cdv) && n === 8) {
                        cdv = LL[n];
                    }
                    break;
                }
            }
        }
        rs += d;
    }
    cd = rs % 11;
    if (cd === 10) {
        cd = "X";
    }
    if (cd === cdv) {
        return true;
    }
    return false;