JavaScript date of birth and identification of ID card Encyclopedia _ Time and date

if (document.form1.csrq.value== "") {
Alert ("Please fill in the date of birth!");
Document.form1.csrq.focus ();
return false;
}
if (document.form1.csrq.value== "") {
Alert ("Please fill in the date of birth!");
Document.form1.csrq.focus ();
return false;
}else{
if (document.form1.csrq.value.length!=8) {
Alert ("Date of birth must be 8 digits!") ");
Document.form1.csrq.focus ();
return false;
}
if (document.form1.sfzh.value.length==18) {
var Sfzh =document.form1.sfzh.value;
if (document.form1.csrq.value!=sfzh.substring (6,14)) {
Alert ("Date of birth is inconsistent with the identity card number!") ");
Document.form1.csrq.focus ();
return false;
}
}
if (document.form1.sfzh.value.length==15) {
var Sfzh =document.form1.sfzh.value;
if (document.form1.csrq.value!= ' +sfzh.substring (6,12)) {
Alert ("Date of birth is inconsistent with the identity card number!") ");
Document.form1.csrq.focus ();
return false;
}
}
}
if (!isidcardno (Document.form1.sfzh.value)) {
Document.form1.sfzh.focus ();
return false;
}
function Isnn (num) {
var Badchar = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; Capital
Badchar + = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; lowercase letters
Badchar + = "0123456789"; Digital
Badchar + = "" + "";//Half-width and full-width spaces
Badchar + = "' ~!@#$%^& ()-_=+]\\|:;\" \ "<,>?/";//Special symbol
var C;
for (Var i=0;i<name.length;i++) {//To determine the characters in name in turn
C=num.charat (0);//Remove the 1th character in num
if (Badchar.indexof (c)!=-1) {//If the current character finds a matching character in the Badchar, it is not a Chinese character
return false;
} else{
return true;
}
}
function Isidcardno (num)
{
if (isNaN (num)) {alert ("input is not a number!") "); return false;}
var len = num.length, re;
if (len = = 15) {
Re = new RegExp (/^ (\d{6}) ()? ( \D{2}) (\d{2}) (\d{2}) (\d{3}) $/);
}else if (len = = 18) {
Re = new RegExp (/^ (\d{6}) ()? ( \D{4}) (\d{2}) (\d{2}) (\d{3}) (\d) $/);
}else if (ISNN (num)) {
return true;
}else {
Alert ("If the officer number is entered in full, for example: An Officer ID number is the 123,456th number;" If it is an ID number, please check that you entered a number of digits, must be 15-bit or 18-bit. ");
return false;
}
var a = Num.match (re);
if (a!= null)
{
if (len==15)
{
var D = new Date ("+a[3]+"/"+a[4]+"/"+a[5]");
var B = D.getyear () ==a[3]&& (D.getmonth () +1) ==a[4]&&d.getdate () ==a[5];
}
if (len = = 18)
{
var D = new Date (a[3]+ "/" +a[4]+ "/" +a[5]);
var B = D.getfullyear () ==a[3]&& (D.getmonth () +1) ==a[4]&&d.getdate () ==a[5];
}
if (! B) {alert ("Enter the ID number" + a[0] + "in the wrong birth date!" "); return false;}
}
return true;
}