Regex for Time with Milliseconds

javascript

const regex = /^([01]\d|2[0-3]):([0-5]\d):([0-5]\d)\.\d{1,3}$/;
const isValid = regex.test(value);

python

import re
pattern = r'^([01]\d|2[0-3]):([0-5]\d):([0-5]\d)\.\d{1,3}$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^([01]\d|2[0-3]):([0-5]\d):([0-5]\d)\.\d{1,3}$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^([01]\d|2[0-3]):([0-5]\d):([0-5]\d)\.\d{1,3}$/', $value)) {
    echo "valid";
}

java

String pattern = "^([01]\\d|2[0-3]):([0-5]\\d):([0-5]\\d)\\.\\d{1,3}$";
boolean isValid = value.matches(pattern);