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问题：求个身份证号 跪求用JS判断身份证号的合法性描述:
我想让他输入身份证号，先判断输入的是否合法 （15位，18位，或17位加X）。然后根据输入的合法身份证号来 得到 出生日期 和性别 请问怎么 写JS代码
谢谢。好的话 追加分数
解决方案1:
自己使用的JS
解决方案2:
function isChinaIDCard(message,isNeedTrim)
{
this.message = message;
this.isNeedTrim = isNeedTrim;
this.validate = function(fieldObject)
{
if (this.isNeedTrim != false)
{
setElementValue(fieldObject,trimStr(getElementValue(fieldObject)));
}
//得到fieldObject的值
var fieldStringValue = getElementValue(fieldObject);
var errorMsg ="";
fieldStringValue = fieldStringValue.toString()
if (fieldStringValue.length==18)
{
var a,b,c ;
if (!isInteger(fieldStringValue.substr(0,17)))
{
errorMsg = message + "Identity card number validation error:Must be 17 before the figures";
return errorMsg;
}
a=parseInt(fieldStringValue.substr(0,1))*7+parseInt(fieldStringValue.substr(1,1))*9+parseInt(fieldStringValue.substr(2,1))*10;
a=a+parseInt(fieldStringValue.substr(3,1))*5+parseInt(fieldStringValue.substr(4,1))*8+parseInt(fieldStringValue.substr(5,1))*4;
a=a+parseInt(fieldStringValue.substr(6,1))*2+parseInt(fieldStringValue.substr(7,1))*1+parseInt(fieldStringValue.substr(8,1))*6;
a=a+parseInt(fieldStringValue.substr(9,1))*3+parseInt(fieldStringValue.substr(10,1))*7+parseInt(fieldStringValue.substr(11,1))*9;
a=a+parseInt(fieldStringValue.substr(12,1))*10+parseInt(fieldStringValue.substr(13,1))*5+parseInt(fieldStringValue.substr(14,1))*8;
a=a+parseInt(fieldStringValue.substr(15,1))*4+parseInt(fieldStringValue.substr(16,1))*2;
b=a%11;
//最后一位为校验位
if (b==2)
{
//转为大写X
c=fieldStringValue.substr(17,1).toUpperCase();
}
else
{
c=parseInt(fieldStringValue.substr(17,1));
}
switch(b)
{
case 0: if ( c!=1 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 1";return errorMsg;}break;
case 1: if ( c!=0 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 0";return errorMsg;}break;
case 2: if ( c!="X") {errorMsg = message+ "Identity card number validation error: The last one should be: X";return errorMsg;}break;
case 3: if ( c!=9 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 9";return errorMsg;}break;
case 4: if ( c!=8 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 8";return errorMsg;}break;
case 5: if ( c!=7 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 7";return errorMsg;}break;
case 6: if ( c!=6 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 6";return errorMsg;}break;
case 7: if ( c!=5 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 5";return errorMsg;}break;
case 8: if ( c!=4 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 4";return errorMsg;}break;
case 9: if ( c!=3 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 3";return errorMsg;}break;
case 10: if ( c!=2 ) {errorMsg = message+ "Identity card number validation error: The last one should be: 2";return errorMsg;}
}
}
//15位身份证号
else
{
if (!isInteger(fieldStringValue))
{
errorMsg = message + "Identity card number validation error:Before the 15 can not contain the letters!";
return errorMsg;
}
}
switch(fieldStringValue.length)
{
case 15:
if (isValidDate("19"+fieldStringValue.substr(6,2),fieldStringValue.substr(8,2),fieldStringValue.substr(10,2)))
{
return null;
}
else
{
errorMsg = message + "Identity card number validation error:Date of birth wrong format!";
return errorMsg;
}
case 18:
if (isValidDate(fieldStringValue.substr(6,4),fieldStringValue.substr(10,2),fieldStringValue.substr(12,2)))
{
return null;
}
else
{
errorMsg = message + "Identity card number validation error:Date of birth wrong format!";
}
}
errorMsg = message + "Identity card number validation error:ID card numbers must be 15 or 18!";
return errorMsg
}
}
function showBirthday(val)
{
var birthdayValue;
if(15==val.length)
{ //15位身份证号码
birthdayValue = val.charAt(6)+val.charAt(7);
if(parseInt(birthdayValue)<10)
{
birthdayValue = '20'+birthdayValue;
}
else
{
birthdayValue = '19'+birthdayValue;
}
birthdayValue=birthdayValue+'-'+val.charAt(8)+val.charAt(9)+'-'+val.charAt(10)+val.charAt(11);
if(parseInt(val.charAt(14)/2)*2!=val.charAt(14))
document.all.sex.value='男';
else
document.all.sex.value='女';
document.all.birthday.value=birthdayValue;
}
if(18==val.length)
{ //18位身份证号码
birthdayValue=val.charAt(6)+val.charAt(7)+val.charAt(8)+val.charAt(9)+'-'+val.charAt(10)+val.charAt(11)
+'-'+val.charAt(12)+val.charAt(13);
if(parseInt(val.charAt(16)/2)*2!=val.charAt(16))
document.all.sex.value='男';
else
document.all.sex.value='女';
if(val.charAt(17)!=IDCard(val))
{
document.all.idCard.style.backgroundColor='#ffc8c8';
}
else
{
document.all.idCard.style.backgroundColor='white';
}
document.all.birthday.value=birthdayValue;
}
}
// 18位身份证号最后一位校验
function IDCard(Num)
{
if (Num.length!=18)
return false;
var x=0;
var y='';
for(i=18;i>=2;i--)
x = x + (square(2,(i-1))%11)*parseInt(Num.charAt(19-i-1));
x%=11;
y=12-x;
if (x==0)
y='1';
if (x==1)
y='0';
if (x==2)
y='X';
return y;
}
// 求得x的y次方
function square(x,y)
{
var i=1;
for (j=1;j<=y;j++)
i*=x;
return i;
}
var Errors=new Array(
"验证通过!",
"身份证号码位数不对!",
"身份证号码出生日期超出范围或含有非法字符!",
"身份证号码校验错误!",
"身份证地区非法!"
);
var area={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 idcard,Y,JYM;
var S,M;
var idcard_array = new Array();
idcard_array = idcard.split("");
//地区检验
if(area[parseInt(idcard.substr(0,2))]==null) return Errors[4];
//身份号码位数及格式检验
switch(idcard.length){
case 15:
if ( (parseInt(idcard.substr(6,2))+1900) % 4 == 0 || ((parseInt(idcard.substr(6,2))+1900) % 100 == 0 && (parseInt(idcard.substr(6,2))+1900) % 4 == 0 )){
ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$/;//测试出生日期的合法性
} else {
ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$/;//测试出生日期的合法性
}
if(ereg.test(idcard)){
return Errors[0];
}else{
return Errors[2];
}
break;
case 18:
//18位身份号码检测
//出生日期的合法性检查
//闰年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))
//平年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))
if ( parseInt(idcard.substr(6,4)) % 4 == 0 || (parseInt(idcard.substr(6,4)) % 100 == 0 && parseInt(idcard.substr(6,4))%4 == 0 )){
ereg=/^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9Xx]$/;//闰年出生日期的合法性正则表达式
} else {
ereg=/^[1-9][0-9]{5}19[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9Xx]$/;//平年出生日期的合法性正则表达式
}
if(ereg.test(idcard)){//测试出生日期的合法性
//计算校验位
S = (parseInt(idcard_array[0]) + parseInt(idcard_array[10])) * 7
+ (parseInt(idcard_array[1]) + parseInt(idcard_array[11])) * 9
+ (parseInt(idcard_array[2]) + parseInt(idcard_array[12])) * 10
+ (parseInt(idcard_array[3]) + parseInt(idcard_array[13])) * 5
+ (parseInt(idcard_array[4]) + parseInt(idcard_array[14])) * 8
+ (parseInt(idcard_array[5]) + parseInt(idcard_array[15])) * 4
+ (parseInt(idcard_array[6]) + parseInt(idcard_array[16])) * 2
+ parseInt(idcard_array[7]) * 1
+ parseInt(idcard_array[8]) * 6
+ parseInt(idcard_array[9]) * 3 ;
Y = S % 11;
M = "F";
JYM = "10X98765432";
M = JYM.substr(Y,1);//判断校验位
if(M == idcard_array[17]){
return Errors[0]; //检测ID的校验位
}else{
return Errors[3];
}
}else{
return Errors[2];
}
break;
default:
return Errors[1];
break;
}
}