JS对身份证号码进行验证方法
//身份证号验证
function IdentityCodeValid(code) {
var city = { 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 tip = "";
var pass = true;
if (!code || !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[12])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code)) {
tip = "身份证号格式错误";
pass = false;
}
else if (!city[code.substr(0, 2)]) {
tip = "地址编码错误";
pass = false;
}
else {
//18位身份证需要验证最后一位校验位
if (code.length == 18) {
code = code.split('');
//∑(ai×Wi)(mod 11)
//加权因子
var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
//校验位
var parity = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2];
var sum = 0;
var ai = 0;
var wi = 0;
for (var i = 0; i < 17; i++) {
ai = code[i];
wi = factor[i];
sum += ai * wi;
}
var last = parity[sum % 11];
if (parity[sum % 11] != code[17]) {
tip = "校验位错误";
pass = false;
}
}
}
//if (!pass) alert(tip);
// return pass;
return pass;
}
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