身份证号验证

经典js身份证验证





/*
功能：验证身份证号码是否有效
提 示信息：未输入或输入身份证号不正确！
使用：validateIdCard(obj)
返回：0,1,2,3
*/
function validateIdCard(obj)
{
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 = "";
var strIDno = obj;
var idCardLength = strIDno.length;
if(!/^\d{17}(\d|x)$/i.test(strIDno)&&!/^\d{15}$/i.test(strIDno))
        return 1; //非法身份证号



if(aCity[parseInt(strIDno.substr(0,2))]==null)
return 2;// 非法地区

  // 15位身份证转换为18位
if (idCardLength==15)
{
    sBirthday = "19" + strIDno.substr(6,2) + "-" + Number(strIDno.substr(8,2)) + "-" + Number(strIDno.substr(10,2));
  var d = new Date(sBirthday.replace(/-/g,"/"))
  var dd = d.getFullYear().toString() + "-" + (d.getMonth()+1) + "-" + d.getDate();
  if(sBirthday != dd)
                return 3; //非法生日
              strIDno=strIDno.substring(0,6)+"19"+strIDno.substring(6,15);
              strIDno=strIDno+GetVerifyBit(strIDno);
}

       // 判断是否大于2078年，小于1900年
       var year =strIDno.substring(6,10);
       if (year<1900 || year>2078 )
           return 3;//非法生日

    //18位身份证处理

   //在后面的运算中x相当于数字10,所以转换成a
    strIDno = strIDno.replace(/x$/i,"a");

  sBirthday=strIDno.substr(6,4)+"-"+Number(strIDno.substr(10,2))+"-"+Number(strIDno.substr(12,2));
  var d = new Date(sBirthday.replace(/-/g,"/"))
  if(sBirthday!=(d.getFullYear()+"-"+ (d.getMonth()+1) + "-" + d.getDate()))
                return 3; //非法生日
    // 身份证编码规范验证
  for(var i = 17;i>=0;i --)
   iSum += (Math.pow(2,i) % 11) * parseInt(strIDno.charAt(17 - i),11);
  if(iSum%11!=1)
                return 1;// 非法身份证号

   // 判断是否屏蔽身份证
    var words = new Array();
    words = new Array("11111119111111111","12121219121212121");

    for(var k=0;k<words.length;k++){
        if (strIDno.indexOf(words[k])!=-1){
            return 1;
        }
    }

return 0;
}