转：js验证身份证号有效性并提示对应信息

  1 function nunber(allowancePersonValue){ 
  2  if(allowancePersonValue=="身份证号"){ 
  3  $("#span_username").show(); 
  4  $("#span_username").html("身份证号不能为空"); 
  5  return false; 
  6  } 
  7  //校验长度，类型 
  8  else if(isCardNo(allowancePersonValue) === false) 
  9  { 
 10 $("#span_username").show(); 
 11  $("#span_username").html("您输入的身份证号码不正确，请重新输入"); 
 12  return false; 
 13  } 
 14  //检查省份 
 15  else if(checkProvince(allowancePersonValue) === false) 
 16  { 
 17  $("#span_username").show(); 
 18  $("#span_username").html("您输入的身份证号码不正确,请重新输入"); 
 19  return false; 
 20  } 
 21  //校验生日 
 22  else if(checkBirthday(allowancePersonValue) === false) 
 23  { 
 24  $("#span_username").show(); 
 25  $("#span_username").html("您输入的身份证号码生日不正确,请重新输入"); 
 26  return false; 
 27  } 
 28  //检验位的检测 
 29  else if(checkParity(allowancePersonValue) === false) 
 30  { 
 31  $("#span_username").show(); 
 32  $("#span_username").html("您的身份证校验位不正确,请重新输入"); 
 33  return false; 
 34  }else{ 
 35  $("#span_username").hide(); 
 36  return true; 
 37  } 
 38   
 39 } 
 40   
 41 //身份证省的编码 
 42 var vcity={ 11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古", 
 43     21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏", 
 44     33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南", 
 45     42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆", 
 46     51:"四川",52:"贵州",53:"云南",54:"西藏",61:"陕西",62:"甘肃", 
 47     63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"
 48     }; 
 49   
 50 //检查号码是否符合规范，包括长度，类型 
 51 function isCardNo(card){ 
 52  //身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X 
 53  var reg = /(^\d{15}$)|(^\d{17}(\d|X)$)/; 
 54  if(reg.test(card) === false){ 
 55  //alert("demo"); 
 56  return false; 
 57  } 
 58  return true; 
 59 } 
 60   
 61 //取身份证前两位,校验省份 
 62 function checkProvince(card){ 
 63  var province = card.substr(0,2); 
 64  if(vcity[province] == undefined){ 
 65  return false; 
 66  } 
 67  return true; 
 68 } 
 69   
 70 //检查生日是否正确 
 71 function checkBirthday(card){ 
 72  var len = card.length; 
 73  //身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字 
 74  if(len == '15'){ 
 75    var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/; 
 76    var arr_data = card.match(re_fifteen); 
 77    var year = arr_data[2]; 
 78    var month = arr_data[3]; 
 79    var day = arr_data[4]; 
 80    var birthday = new Date('19'+year+'/'+month+'/'+day); 
 81    return verifyBirthday('19'+year,month,day,birthday); 
 82  } 
 83  //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X 
 84  if(len == '18'){ 
 85    var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/; 
 86    var arr_data = card.match(re_eighteen); 
 87    var year = arr_data[2]; 
 88    var month = arr_data[3]; 
 89    var day = arr_data[4]; 
 90    var birthday = new Date(year+'/'+month+'/'+day); 
 91    return verifyBirthday(year,month,day,birthday); 
 92  } 
 93  return false; 
 94 } 
 95   
 96 //校验日期 
 97 function verifyBirthday(year,month,day,birthday){ 
 98  var now = new Date(); 
 99  var now_year = now.getFullYear(); 
100  //年月日是否合理 
101  if(birthday.getFullYear() == year && (birthday.getMonth() + 1) == month && birthday.getDate() == day) 
102  { 
103    //判断年份的范围（3岁到100岁之间) 
104    var time = now_year - year; 
105    if(time >= 3 && time <= 100) 
106    { 
107      return true; 
108    } 
109    return false; 
110  } 
111  return false; 
112 } 
113   
114 //校验位的检测 
115 function checkParity(card){ 
116  //15位转18位 
117  card = changeFivteenToEighteen(card); 
118  var len = card.length; 
119  if(len == '18'){ 
120    var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); 
121    var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'); 
122    var cardTemp = 0, i, valnum; 
123    for(i = 0; i < 17; i ++) 
124    { 
125      cardTemp += card.substr(i, 1) * arrInt[i]; 
126    } 
127    valnum = arrCh[cardTemp % 11]; 
128    if (valnum == card.substr(17, 1)) 
129    { 
130      return true; 
131    } 
132    return false; 
133  } 
134  return false; 
135 } 
136   
137 //15位转18位身份证号 
138 function changeFivteenToEighteen(card){ 
139  if(card.length == '15') 
140  { 
141    var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); 
142    var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'); 
143    var cardTemp = 0, i;  
144    card = card.substr(0, 6) + '19' + card.substr(6, card.length - 6); 
145    for(i = 0; i < 17; i ++) 
146    { 
147      cardTemp += card.substr(i, 1) * arrInt[i]; 
148    } 
149    card += arrCh[cardTemp % 11]; 
150    return card; 
151  } 
152  return card; 
153 }

转载自：https://www.jb51.net/article/73613.htm