Regex for Browser User Agent

javascript

const regex = /Mozilla\\/5\.0\s+\([^)]+\)/;
const isValid = regex.test(value);

python

import re
pattern = r'Mozilla\/5\.0\s+\([^)]+\)'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /Mozilla\/5\.0\s+\([^)]+\)/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/Mozilla\\/5\.0\s+\([^)]+\)/', $value)) {
    echo "valid";
}

java

String pattern = "Mozilla\\/5\\.0\\s+\\([^)]+\\)";
boolean isValid = value.matches(pattern);