根据中华人民共和国身份证生成规则，校验身份证

<input type="text" id="card" onblur="checkCard()" />

var checkCard=function(){
var cardNo=$("#card").val();
var result=$.checkCard(cardNo);
}

/**
* checkCard (http://blog.csdn.net/u598975767/article/details/75539374)
* 基于jquery 根据中华人民共和国身份证号生成规则，校验身份证号
* @version     v0.1
* @author      benboerba
*/
$.extend({
checkCard: function(cardNo) {
//省编码
var provice = {
"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(!cardNo){
return false;
}
var ValCodeArr = ["1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2"];
var Wi = ["7", "9", "10", "5", "8", "4", "2", "1", "6", "3", "7", "9", "10", "5", "8", "4", "2"];
var Ai = "";
var length = cardNo.length;

// ================ 号码的长度 15位或18位 ================
if (cardNo.length != 15 && cardNo.length != 18) {
alert("请输入正确的身份证号码");
return false;
}

// ================ 临时操作身份证号 ================
if (cardNo.length == 18) {
Ai = cardNo;
} else if (cardNo.length == 15) {
Ai = cardNo.substring(0, 6) + "19" + cardNo.substring(6, 15);
}

//判断,如果输入的身份证号..如果最后一位是x或者X全部改为X
cardNo = cardNo.toUpperCase();

// ================ 18位除最后以为都为数字;15位全部是数字 ================
if (!(/(^\d{15}$)|(^\d{17}([0-9]|X)$)/.test(cardNo))) {
alert("请输入正确的身份证号码");
return false;
}

// ================ 出生年月是否有效 ================
var strYear = Ai.substring(6, 10); // 年份
var strMonth = Ai.substring(10, 12); // 月份
var strDay = Ai.substring(12, 14); // 月份
if (!isDataFormat(strYear + "-" + strMonth + "-" + strDay)) {
alert("请输入正确的身份证号码");
return false;
}
var nowDate = new Date();
var cardDate = new Date(strYear + "-" + strMonth + "-" + strDay);
var currentAge = nowDate.getFullYear() - cardDate.getFullYear();
var timeDiffer = nowDate.getTime() - cardDate.getTime();
// ================ 如果出生年份与现在相差大于150年或者生日晚于当前时间 则不在有效范围 ================
if (currentAge > 150 || timeDiffer < 0) {
alert("请输入正确的身份证号码");
return false;
}

// ================ 地区码是否有效 ================
if (provice[Ai.substring(0, 2)] == null) {
alert("请输入正确的身份证号码");
return false;
}

// ================ 判断最后一位的值 ================
var TotalmulAiWi = 0;
for (var i = 0; i < 17; i++) {
TotalmulAiWi = TotalmulAiWi + parseInt(Ai.charAt(i)) * parseInt(Wi[i]);
}
var modValue = TotalmulAiWi % 11;
if (cardNo.length == 18 && cardNo.charAt(17) != ValCodeArr[modValue]) {
alert("请输入正确的身份证号码");
return false;
}
return true;
/**
* 验证日期字符串是否是YYYY-MM-DD格式
* 此正则已对年月日进行校验，包括每月天数差别（28、29、30、31）,及平年闰年
*/
function isDataFormat (str) {
var flag = false;
var regxStr = "^((\\d{2}(([02468][048])|([13579][26]))[\\-\\/\\s]?((((0?[13578])|(1[02]))" +
"[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?" +
"((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])))))|(" +
"\\d{2}(([02468][1235679])|([13579][01345789]))[\\-\\/\\s]?((((0?[13578])|(1[02]" +
"))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?" +
"((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))" +
"))(\\s(((0?[0-9])|([1-2][0-3]))\\:([0-5]?[0-9])((\\s)|(\\:([0-5]?[0-9])))))?$";
var regexp = new RegExp(regxStr);
if (regexp.test(str)) {
flag = true;
}
return flag;
};
}
});