身份证真实性校验js、身份证长度正则验证

身份证号码真实性校验

<input type="text" value="请输入身份证号" id="cards" >
<button onclick="isIdCardNo(cv)">ok</button>

<script>

function $(id){ return document.getElementById(id);}
var cv;  //获取input框的值
$(‘cards‘).onblur = function(){
console.log($(‘cards‘).value)
cv = $(‘cards‘).value;
}

//这个可以验证15位和18位的身份证，并且包含生日和校验位的验证。
//如果有兴趣，还可以加上身份证所在地的验证，就是前6位有些数字合法有些数字不合法。 ?
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})$/);
???????var arrSplit = num.match(re);
???????//检查生日日期是否正确
???????var dtmBirth = new Date(‘19‘ + arrSplit[2] + ‘/‘ + arrSplit[3] + ‘/‘ + arrSplit[4]);
???????var bGoodDay;
???????bGoodDay = (dtmBirth.getYear() == Number(arrSplit[2]))
???????????????????&& ((dtmBirth.getMonth() + 1) == Number(arrSplit[3]))
???????????????????&& (dtmBirth.getDate() == Number(arrSplit[4]));
???????if (!bGoodDay) {
???????????alert(‘输入的身份证号里出生日期不对！‘);
???????????return false;
???????} else {
???????????//将15位身份证转成18位
???????????//校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。 ?????????
???????????var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
???????????var arrCh = new Array(‘1‘, ‘0‘, ‘X‘, ‘9‘, ‘8‘, ‘7‘, ‘6‘, ‘5‘, ‘4‘, ‘3‘, ‘2‘);
???????????var nTemp = 0, i;
???????????num = num.substr(0, 6) + ‘19‘ + num.substr(6, num.length - 6);
???????????for (i = 0; i < 17; i++) {
???????????????nTemp += num.substr(i, 1) * arrInt[i];
???????????}
???????????num += arrCh[nTemp % 11];
???????????return num;
???????}
???}
???if (len == 18) {
???????re = new RegExp(/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/);
???????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 num;
???????}
???}
???return false;
}
</script>

身份证长度简单正则验证（下列在miniui框架下生效）

function onIDCardsValidation(e) {
???if (e.isValid) {
???????var pattern = /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/;
???????if (e.value.length < 15 || e.value.length > 18 || pattern.test(e.value) == false) {
??????????e.errorText = "身份证输入不合法";
??????????e.isValid = false;
???????}
???};
}