``` /* * 檢驗身份證 */ checkIdCard: function(idCard) { var aCity = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "內蒙古", 21: "遼寧", 22: "吉林", 23: "黑龍江", 31: "上海", 32: "江蘇", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山東", 41: "河南", 42: "湖北", 43: "湖南", 44: "廣東", 45: "廣西", 46: "海南", 50: "重慶", 51: "四川", 52: "貴州", 53: "云南", 54: "西藏", 61: "陜西", 62: "甘肅", 63: "青海", 64: "寧夏", 65: "新疆", 71: "臺灣", 81: "香港", 82: "澳門", 91: "國外" } var iSum = 0; var info = ""; if (!/^\d{17}(\d|x)$/i.test(idCard)) { return false; //身份證長度或格式錯誤 } idCard = idCard.replace(/x$/i, "a"); if (aCity[parseInt(idCard.substr(0, 2))] == null) { return false; //身份證地區非法; } 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; //身份證上的出生日期非法; } 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; //身份證號非法; } return true; }, ```