Keystroke script to display string into HH:MM:ss tt

Question

I found a keystroke script that would convert a 4 digits into HH:MM format, but want to go beyond that and convert to HH:MM:ss tt (e.g. 1645 into 4:45:00 PM.) Here is the script I currently use.

if(event.willCommit)

{

event.value = event.value.toString().replace(/(\d{1,2})[\,\.]?(\d{2})/,"$1:$2");

}

try67 · Accepted Answer

That's because the padStart method is not supported in Acrobat, and also the willCommit property is not relevant here.

Use this code:

if (event.value && event.value.length === 4) {
    var raw = event.value.replace(/\D/g, ''); // Remove non-digits
    var hh = parseInt(raw.substr(0, 2), 10);
    var mm = parseInt(raw.substr(2, 2), 10);
    var ss = "00";
    var period = "AM";

    if (hh >= 12) {
        period = "PM";
        if (hh > 12) hh -= 12;
    }
    if (hh === 0) hh = 12;

    // Format with leading zeros if needed
    var hStr = hh.toString();
    var mStr = mm.toString();
	if (mStr.length==1) mStr = "0"+mStr;

    event.value = hStr + ":" + mStr + ":" + ss + " " + period;
}

Tariq Dar · Answer

Hello,

Thanks for reaching out. Try the following:

Use this in the Format event (not keystroke) for better control:

if (event.value && event.value.length === 4 && event.willCommit) {
var raw = event.value.replace(/\D/g, ''); // Remove non-digits
var hh = parseInt(raw.substr(0, 2), 10);
var mm = parseInt(raw.substr(2, 2), 10);
var ss = "00";
var period = "AM";

if (hh >= 12) {
period = "PM";
if (hh > 12) hh -= 12;
}
if (hh === 0) hh = 12;

// Format with leading zeros if needed
var hStr = hh.toString();
var mStr = mm.toString().padStart(2, '0');

event.value = hStr + ":" + mStr + ":" + ss + " " + period;
}

Input	Output
0845	8:45:00 AM
0000	12:00:00 AM
1200	12:00:00 PM
1645	4:45:00 PM
2359	11:59:00 PM

How to Apply in Acrobat:

Open the form field properties.
Go to the Format tab → Select Custom Format Script.
Click Edit and paste the script above.

If the customer prefers to use it in the Keystroke script, it can be modified slightly to support real-time typing but may behave unpredictably during partial inputs.

~Tariq

How to Apply in Acrobat:

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