Birthday Script Error

[awbrown66]

I have the following script in a form, but I haven't dealt with JavaScript in a LONG time, and I'm stuck!  The process I want to happen is for the user to enter their birth date, and then the form displays a message indicating their age, then the field is validated and they move to the next field. I want the field to accept only "mm/dd/yyyy", but the user is allowed to enter just about anything they want, and the field accepts the entry. There is a simple error in the script causing the field not to catch incorrectly formatted field entries. What am I missing?

//Document Level Script:

function getAge(birthDate) {
    var today = new Date();
    var age = today.getFullYear() - birthDate.getFullYear();
    var m = today.getMonth() - birthDate.getMonth();
    if (m < 0 || (m === 0 && today.getDate() < birthDate.getDate())) {
        age--;
    }   
    return age;
}

//Custom Format Script:

if (!event.value) {
    event.value = "mm/dd/yyyy";
    event.target.display = display.noPrint
}
else {
    event.target.display = display.visible;
}

//Validation Script:

if(event.value != ""){
    event.target.required = false;
}
else {
    event.target.required = true;
}

if (event.value != "") {
var now = new Date(); // Todays Date
now.setHours(0);
now.setMinutes(0);
now.setSeconds(0);
now.setMilliseconds(0);
var d = util.scand("mm/dd/yyyy", event.value); // Date of Birth entry by user

    var age = getAge(d);

if (d == null) {
  app.alert("Invalid date entry! Please enter your 'Date of Birth' in 'mm/dd/yyyy' format");
  event.rc = false;
}
    else if (age < 18) {
  app.alert("The date you entered indicates that you are less than 18 years of age!\n\nWe cannot process your application unless you are 18 years of age or older!", 1, 0)
        event.rc = false;
}
    else {
        app.alert("You have indicated that you are " + age + " years old.\n\nIf this is correct, please move to the next question.\n\nIf it is incorrect, check your date of birth and re-enter it as necessary.", 3, 0)

  event.rc = true; // this is redundant
  event.value = util.printd("mm/dd/yyyy", d); // strict format
}
}

event.target.required = (event.value == "" || !event.rc);

[gkaiseril]

If a user enters a value like "12/10/1956"  is the date "December 10, 1956" or "October 12, 1956"?

You need to have a way to know exactly what the month and date value are or you cannot perform your task.

[awbrown66]

If you enter 12/10/1956, it displays correctly "12/10/1956".  The calculation section works correctly, it's the entry validation process that has problems.  One could enter "1111" or "aB2CR3" and the field would accept the entry... if one did make such an entry, the calculation does not execute, it just jumps to the next field.  As long as one enters any date in "mm/dd/yyyy" format, the field works great with no errors.

[awbrown66 · Accepted solution]

Good luck getting anyone in this place to give you more than a "hit and run" reply unless you plan to pay for services.

Once I had time to go over the script and investigate, I found that I placed the getAge function in the wrong location in the Validation script above.  I've included the corrected Validation script below, in case anyone wants to use it.  The function and format scripts listed above work correctly "as is" in my document.

//Validation Script:

if(event.value != ""){
    event.target.required = false;
}
else {
    event.target.required = true;
}

if (event.value != "") {
var now = new Date(); // Todays Date
now.setHours(0);
now.setMinutes(0);
now.setSeconds(0);
now.setMilliseconds(0);
var d = util.scand("mm/dd/yyyy", event.value); // Date of Birth entry by user

if (d == null) {
  app.alert("Invalid date entry! Please enter your 'Date of Birth' in 'mm/dd/yyyy' format");
  event.rc = false;
}

    else {
var age = getAge(d);

    if (age < 18) {
  app.alert("The date you entered indicates that you are less than 18 years of age!\n\nWe cannot process your application unless you are 18 years of age or older!", 1, 0)
        event.rc = false;
}
    else {
        app.alert("You have indicated that you are " + age + " years old.\n\nIf this is correct, please move to the next question.\n\nIf it is incorrect, check your date of birth and re-enter it as necessary.", 3, 0)

  event.rc = true; // this is redundant
  event.value = util.printd("mm/dd/yyyy", d); // strict format
}
}
}
event.target.required = (event.value == "" || !event.rc);

[Amr26610604kbe9]

It works perfectly. 

I want to reset or clear the date of birth if it's < 18 after the alert.

[JR Boulay]

Hi.

You should read this: http://practicalpdf.com/2016/12/16/introducing-the-practicalpdf-date-library-for-adobe-acrobat/