常用的正则表达式验证
1、验证整数
function validateInteger(str)
{
???? var re = new RegExp(/^(-|\+)?\d+$/);
???? return? re.test(str);
}
?
2、验证身份证
/**
? * 验证身份证信息合法性?
? */
function validateCardNo()
{
???? //获取文本框中的内容
??? ?var cardNo = registerForm.cardNo.value;
?
??? ?//验证身份证的合法性
???? if(cardNo.length > 0)
???? {
?????? ?if(!isIdCardNo(cardNo))
?????? {
????????? ?registerForm.cardNo.focus();
???????? ?return false;
????? ?}
???? }
}
?
/**
? * 正则表达式验证身份证信息规则 （mls）
? */
function isIdCardNo(num)
{???????????
??? num = num.toUpperCase();? //身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X。????
????
??? if (!(/(^\d{15}$)|(^\d{17}([0-9]|X)$)/.test(num)))
??? {????
??????? alert('输入的身份证号长度不对，或者号码不符合规定！\n15位号码应全为数字，18位号码末位可以为数字或X。');?????????????
??????? return false;????????
??? }
??? //校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
??? //下面分别分析出生日期和校验位
??? var len, re;
??? len = num.length;
??? if (len == 15)
??? {
??? ?? re = new RegExp(/^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/);
?? ?? ?var arrSplit = num.match(re);? //检查生日日期是否正确
? ???? var dtmBirth = new Date('19' + arrSplit[2] + '/' + arrSplit[3] + '/' + arrSplit[4]);
??? ?? var bGoodDay; bGoodDay = (dtmBirth.getYear() == Number(arrSplit[2])) && ((dtmBirth.getMonth() + 1)?? == Number(arrSplit[3])) && (dtmBirth.getDate() == Number(arrSplit[4]));
?? ??? if(!bGoodDay)
?? ??? {????????
?????? ?? alert('输入的身份证号里出生日期不对！');???????????
?????? ?? return false;
?? ??? }
?? ? ?else
?? ?? {
?? ?????? //将15位身份证转成18位 //校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。???????
?????? ?? var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);????????
?????? ?? var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');?????
?????? ?? var nTemp = 0, i;????????????
??????????num = num.substr(0, 6) + '19' + num.substr(6, num.length - 6);??????????
?????? ?? for(i = 0; i < 17; i ++)
?????? ?? {????????????????
?????????? ??nTemp += num.substr(i, 1) * arrInt[i];???????
?????? ?? }
?????? ?? num += arrCh[nTemp % 11];
?????? ?? return true;
?? ?? }
??? }
??? if (len == 18)
??? {
??????? re = new RegExp(/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/);
??????? var arrSplit = num.match(re);? //检查生日日期是否正确
??????? var dtmBirth = new Date(arrSplit[2] + "/" + arrSplit[3] + "/" + arrSplit[4]);
??????? var bGoodDay; bGoodDay = (dtmBirth.getFullYear() == Number(arrSplit[2])) &&? ((dtmBirth.getMonth() + 1) == Number(arrSplit[3])) && (dtmBirth.getDate() == Number(arrSplit[4]));
??????? if (!bGoodDay)
??????? {
??????????? //alert(dtmBirth.getYear());
??????????? //alert(arrSplit[2]);
??????????? alert('输入的身份证号里出生日期不对！');
??????????? return false;
??????? }
??????? else
??????? {
??????? ?//检验18位身份证的校验码是否正确。 //校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
??????????? var valnum;
??????????? var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
??????????? var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
??????????? var nTemp = 0, i;
??????????? for(i = 0; i < 17; i ++)
??????????? {
??????????????? nTemp += num.substr(i, 1) * arrInt[i];
??????????? }
??????????? valnum = arrCh[nTemp % 11];
??????????? if (valnum != num.substr(17, 1))
??????????? {
??????????????? alert('18位身份证的校验码不正确！应该为：' + valnum);
??????????????? return false;
??????????? }
??????????? return true;
??????? }
??? }
??? return false;
}
