<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>测试身份证号码</title></head><body><!-- <form> --><input placeholder="请输入要检查的身份证号码" id="idCard" /><button type="submit" onclick="test()">提交</button><!-- </form> --><script>function test() {let idCard = document.getElementById('idCard').value//判断是不是字符串，如果不是，就转化为字符串idCard = typeof idCard === 'string' ? idCard : String(idCard)//所在省份let province = idCard.substring(0, 2)if (!checkProv(province)) {console.log('省份检验失败!!')return}//出生年月日let birthDate = idCard.substring(6, 14)if (!checkDate(birthDate)) {console.log('出生日期检验失败!!')return}//校验码规则//正则表达式验证号码的结构:首先是17个数字开头，再是一个数字或者是x结尾let regx = /^[\d]{17}[0-9|x|X]{1}$/;if (regx.test(idCard)) {// 验证前面17位数字，首先定义前面17位系数let sevenTeenIndex = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];//截取前面17位let front_sevenTeen = idCard.slice(0, 17)//截取18位let eightTeen = idCard.slice(17, 18)// 这里如果是X要转换成小写，如果是数字在这里是字符串类型,则转换成数字类型，好做判断eightTeen = isNaN(parseInt(eightTeen)) ? eightTeen.toLowerCase() : parseInt(eightTeen)// 定义一个变量计算系数乘积之和余数let remainder = 0;//利用循环计算前17位数与系数乘积并添加到一个数组中// charAt()类似数组的访问下标一样，访问单个字符串的元素,返回的是一个字符串因此要转换成数字for (let i = 0; i < 17; i++) {remainder += parseInt(front_sevenTeen.charAt(i)) * sevenTeenIndex[i]}console.log('remainder是', remainder)//余数对应数字数组let remainderKeyArr = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2];//取得余数对应的值let remainderKey = typeof remainderKeyArr[remainder % 11] === 'string' ? 'x' : remainderKeyArr[remainder % 11]if (remainderKey === eightTeen) {console.log('身份证号码正确')} else {console.log('身份证号码不正确')}} else {console.log('身份证号码格式有误')}}//省级地址码校验var checkProv = function (val) {//这里的var可以是字符串，不用特地转换为数字var pattern = /^[1-9][0-9]/;var provs = {11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江 ", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北 ", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏 ", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门" };if (pattern.test(val)) {if (provs[val]) {return true;}}return false;}//出生日期码校验var checkDate = function (val) {//年份是18、19、20开头var pattern = /^(18|19|20)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)$/;if (pattern.test(val)) {var year = val.substring(0, 4);var month = val.substring(4, 6);var date = val.substring(6, 8);var date2 = new Date(year + "-" + month + "-" + date);if (date2 && date2.getMonth() == (parseInt(month) - 1)) {return true;}}return false;}</script></body></html>
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