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``` /* * 检验身份证 */ checkIdCard: function(idCard) { 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" } var iSum = 0; var info = ""; if (!/^\d{17}(\d|x)$/i.test(idCard)) { return false; //身份证长度或格式错误 } idCard = idCard.replace(/x$/i, "a"); if (aCity[parseInt(idCard.substr(0, 2))] == null) { return false; //身份证地区非法; } var sBirthday = idCard.substr(6, 4) + "-" + Number(idCard.substr(10, 2)) + "-" + Number(idCard.substr(12, 2)); var d = new Date(sBirthday.replace(/-/g, "/")); if (sBirthday != (d.getFullYear() + "-" + (d.getMonth() + 1) + "-" + d.getDate())) { return false; //身份证上的出生日期非法; } for (var i = 17; i >= 0; i--) { iSum += (Math.pow(2, i) % 11) * parseInt(idCard.charAt(17 - i), 11); } if (iSum % 11 != 1) { return false; //身份证号非法; } return true; }, ```