精確驗證身份證號碼合法性程式碼例項

antzone發表於2017-04-06

當前有很多關於身份證合法性驗證的程式碼，但是很多都不夠精準，僅僅是對於號碼的位數或者其他方面進行簡單驗證。

本章節分享一段例項程式碼，它能夠比較精準的驗證身份證合法性效果。

程式碼例項如下:

[HTML] 純文字檢視 複製程式碼
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.softwhy.com/" />
<title>螞蟻部落</title>
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
<script type="text/javascript">
function nunber(allowancePersonValue){ 
  if(allowancePersonValue=="身份證號"){ 
    $("#span_username").show(); 
    $("#span_username").html("身份證號不能為空"); 
    return false; 
  } 
  //校驗長度，型別 
  else if(isCardNo(allowancePersonValue) === false){ 
    $("#span_username").show(); 
    $("#span_username").html("您輸入的身份證號碼不正確，請重新輸入"); 
    return false; 
  } 
  //檢查省份 
  else if(checkProvince(allowancePersonValue) === false){ 
    $("#span_username").show(); 
    $("#span_username").html("您輸入的身份證號碼不正確,請重新輸入"); 
    return false; 
  } 
  //校驗生日 
  else if(checkBirthday(allowancePersonValue) === false){ 
    $("#span_username").show(); 
    $("#span_username").html("您輸入的身份證號碼生日不正確,請重新輸入"); 
    return false; 
  } 
  //檢驗位的檢測 
  else if(checkParity(allowancePersonValue) === false){ 
    $("#span_username").show(); 
    $("#span_username").html("您的身份證校驗位不正確,請重新輸入"); 
    return false; 
  }
  else{ 
    $("#span_username").hide(); 
    return true; 
  } 
} 
   
//身份證省的編碼 
var vcity={ 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:"雲南",54:"西藏",61:"陝西",62:"甘肅", 
    63:"青海",64:"寧夏",65:"新疆",71:"臺灣",81:"香港",82:"澳門",91:"國外"
    }; 
   
//檢查號碼是否符合規範，包括長度，型別 
function isCardNo(card){ 
  //身份證號碼為15位或者18位，15位時全為數字，18位前17位為數字，最後一位是校驗位，可能為數字或字元X 
  var reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/; 
  if(reg.test(card) === false){ 
    //alert("demo"); 
    return false; 
  } 
  return true; 
} 
   
//取身份證前兩位,校驗省份 
function checkProvince(card){ 
  var province = card.substr(0,2); 
  if(vcity[province] == undefined){ 
    return false; 
  } 
  return true; 
} 
   
//檢查生日是否正確 
function checkBirthday(card){ 
  var len = card.length; 
  //身份證15位時，次序為省（3位）市（3位）年（2位）月（2位）日（2位）校驗位（3位），皆為數字 
  if(len == '15'){ 
    var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/; 
    var arr_data = card.match(re_fifteen); 
    var year = arr_data[2]; 
    var month = arr_data[3]; 
    var day = arr_data[4]; 
    var birthday = new Date('19'+year+'/'+month+'/'+day); 
    return verifyBirthday('19'+year,month,day,birthday); 
  } 
  //身份證18位時，次序為省（3位）市（3位）年（4位）月（2位）日（2位）校驗位（4位），校驗位末尾可能為X 
  if(len == '18'){ 
    var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/; 
    var arr_data = card.match(re_eighteen); 
    var year = arr_data[2]; 
    var month = arr_data[3]; 
    var day = arr_data[4]; 
    var birthday = new Date(year+'/'+month+'/'+day); 
    return verifyBirthday(year,month,day,birthday); 
  } 
  return false; 
} 
   
//校驗日期 
function verifyBirthday(year,month,day,birthday){ 
  var now = new Date(); 
  var now_year = now.getFullYear(); 
  //年月日是否合理 
  if(birthday.getFullYear() == year && (birthday.getMonth() + 1) == month && birthday.getDate() == day){ 
    //判斷年份的範圍（3歲到100歲之間) 
    var time = now_year - year; 
    if(time >= 3 && time <= 100){ 
      return true; 
    } 
    return false; 
  } 
  return false; 
} 
   
//校驗位的檢測 
function checkParity(card){ 
  //15位轉18位 
  card = changeFivteenToEighteen(card); 
  var len = card.length; 
  if(len == '18'){ 
    var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); 
    var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'); 
    var cardTemp = 0, i, valnum; 
    for(i = 0; i < 17; i ++){ 
      cardTemp += card.substr(i, 1) * arrInt[i];
    } 
    valnum = arrCh[cardTemp % 11]; 
    if (valnum == card.substr(17, 1)){ 
      return true; 
    } 
    return false; 
  } 
  return false; 
} 
   
//15位轉18位身份證號 
function changeFivteenToEighteen(card){ 
  if(card.length == '15'){ 
    var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); 
    var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'); 
    var cardTemp = 0, i;  
    card = card.substr(0, 6) + '19' + card.substr(6, card.length - 6); 
    for(i = 0; i < 17; i ++){ 
      cardTemp += card.substr(i, 1) * arrInt[i]; 
    } 
    card += arrCh[cardTemp % 11]; 
    return card; 
  } 
  return card; 
} 
$(document).ready(function(){
  $("#username").focus(function(){
    if(this.value=='身份證號'){
          this.value='';
        }
  })
  $("#username").blur(function(){
    if(this.value==''){
          this.value='身份證號';
        }
        nunber(this.value);
  })
});
</script>
</head>
<body>
<input type="text" class="reg_txt" value="身份證號" titles="請輸入您的身份證號！" name="userid" id="username"><br> 
<span class="c_red" id="span_username"></span> 
</body>
</html>

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