js正则验证身份证号码

it2025-10-17 7

<!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>  <input placeholder="请输入要检查的身份证号码" id="idCard" /> <button type="submit" onclick="test()">提交</button>  <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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