<html>
<head>
<title>身份证测试</title>
<script type="text/javascript">
function isIdCardNo() {
var tex = document.getElementById('identityid');
var num = document.getElementById('identityid').value;
//alert("您输入的身份证号码是：\n" + 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！\n身份证号码为15位时，应全为数字，\n身份证号码为18位时，末位可以为数字或X。');
tex.value='';
tex.focus();
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;
//当身份证为15位时的验证出生日期。
if (len == 15)
{
re = new RegExp(/^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/);
var arrSplit = num.match(re);
//检查生日日期是否正确
var dtmBirth = new Date('19' + arrSplit[2] + '/' + arrSplit[3] + '/' + arrSplit[4]);
var bGoodDay;
bGoodDay = (dtmBirth.getYear() == Number(arrSplit[2])) && ((dtmBirth.getMonth() + 1) == Number(arrSplit[3])) && (dtmBirth.getDate() == Number(arrSplit[4]));
if (!bGoodDay){
alert('输入的15位身份证号里出生日期不对！');
tex.value='';
tex.focus();
return false;
}
else{
//将15位身份证转成18位
//校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。
//var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
//var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
//var nTemp = 0, i;
//num = num.substr(0, 6) + '19' + num.substr(6, num.length - 6);
//for(i = 0; i < 17; i ++){
// nTemp += num.substr(i, 1) * arrInt[i];
//}
//num += arrCh[nTemp % 11];
//alert("该15位身份证对应的18位是：" + num);
//return num;
}
}
//当身份证号为18位时，校验出生日期和校验位。
if (len == 18)
{
var year = num.substr(6,4);
//alert("year是：" + year);
var nowDate = new Date();
var nowYear = nowDate.getYear();
if((nowYear - year) > 112){
alert("依照输入的身份证出生日期截止到当前，本人已经超过112岁！");
tex.value='';
tex.focus();
return false;
}
re = new RegExp(/^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/);
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18位身份证号里出生日期不对！');
tex.value='';
tex.focus();
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位身份证的最后一位校验码不正确！'); //应该为：' + valnum
tex.value='';
tex.focus();
return false;
}
//return num;
}
}
//验证地区是否有效
var aCity={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 "}
if(aCity[parseInt(num.substr(0,2))] == null){
alert("输入的身份证号前两位地区不对！");
tex.value='';
tex.focus();
return false;
}
alert("正确了!");
return false;
}
</script>
</head>
<body>
请输入身份证号：<input name="identityid" id="identityid" type="text" class="shopLoginMainRight0202010202010101" maxlength="18" onblur="isIdCardNo()" />
<input type="button" value = "check" onclick="isIdCardNo()"/>
</body>
</html>
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