Keystroke script for time in HHMM

Question

Hi.  I have a custom keystroke scipt to limit the text input field to numbers only.if(!event.willCommit)
    event.rc = !isNaN(event.change) || (event.change == "-" && event.selStart == 0);
else
    event.rc = !isNaN(event.value);I would also like to limit the input to 4 characters and restrict the first 2 digits to a number between 00 and 23 and the second 2 digits to a number between 00 and 59.  Is there a way to split the 4 digit number into 2, to limit the input to achieve a time field with the format HHMM? var t1 = Number(start.substr(0,2)); 
var t2 = Number(start.substr(2,2));

Nesa Nurani · Accepted Answer

I've attached a pdf with the fields.Try this:event.rc = /^\d{0,4}$/.test(event.value + event.change);if (event.rc) { var newValue = event.value + event.change, len = newValue.length;     if ((len >= 1 && newValue[0] > '2') ||   (len >= 2 && parseInt(newValue.substring(0, 2), 10) > 23) ||   (len >= 3 && newValue[2] > '5') ||   (len == 4 && parseInt(newValue.substring(2, 4), 10) > 59)) {  event.rc = false;}}

Nesa Nurani · Answer

Why don't you use time format?

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