The birth date, age, and gender (18 digits) are calculated based on the ID card number. The length of service is calculated based on the start time.

1. Calculate the birth date, age, and gender (18 digits) based on the ID card number)
Copy codeThe Code is as follows: // obtain the ID card number
Var UUserCard = $ ("# UUserCard"). val ();
// Obtain the Date of birth
// UUserCard. substring (6, 10) + "-" + UUserCard. substring (10, 12) + "-" + UUserCard. substring (12, 14 );
// Obtain gender
If (parseInt (UUserCard. substr (16, 1) % 2 = 1 ){
// Male
} Else {
// Female
}
// Obtain the age
Var myDate = new Date ();
Var month = myDate. getMonth () + 1;
Var day = myDate. getDate ();

Var age = myDate. getFullYear ()-UUserCard. substring (6, 10)-1;
If (UUserCard. substring (10, 12) <month | UUserCard. substring (10, 12) = month & UUserCard. substring (12, 14) <= day ){
Age ++;
}
// Age

2. Calculate the length of service based on the start time
Copy codeThe Code is as follows: // get the input entry time and convert it to Date
Var UToTime = $ ("UToTime"). val ();
Var aDate = UToTime. split ("-");
// Because the month value ranges from 0 to 11, the input month is reduced by one.
Var NewDate = new Date (aDate [0], aDate [1]-1, aDate [2]);
// Current time
Var myDate = new Date ();
// Subtract time to get the millisecond Value
Var dif = myDate. getTime ()-NewDate. getTime ();
MyDate. setTime (dif );
// The result is [May 29 ].
// MyDate. getFullYear ()-1970 + "year" + myDate. getMonth () + "month" + myDate. getDate () + "day"