如何删除所有隐藏字符（冒号，数字和“ AM”或“ PM”除外）

Question

I have a string that has the time in it like this

"6:00:00 AM" or "10:15:00 PM"

I know the string has hidden characters in it so I would like to use a regex to replace all characters except colons, numbers and AM or PM.

not sure if this below works because I have a string comparison check that is still failing.

selectedTime = selectedTime.replace(/^\w:\s/g, "");

I also tried

selectedTime = selectedTime.replace(/[^\w:\s]/g, "");

Answer 1

This regex replaces all characters except digit, colon, and AM PM

selectedTime = selectedTime.replace(/[^\d:AMP]/gi, "");

Here is DEMO

Answer 2

As stated... This replaced everything except numbers (the ^\\d part), colon (the ^: part) and AM/PM (the ^AMP part).

selectedTime = selectedTime.replace(/[^\\d:AMP]/g,"");

You might also test using https://regex101.com