正则表达式匹配URL

[Pcjmy]

[kangkang123269]

const isValidUrl = (url) => {
  const urlRegex = /^(?:(?:https?|ftp):\/\/)(?:\S+(?::\S*)?@)?(?:((?:(?=[^.-])[\w-]+\.)*[\w-]{2,}\.?(?=[^.-])(?:\.[a-z]{2,})?))(:\d{1,5})?(\/\S*)?$/i;
  return urlRegex.test(url);
}

console.log(isValidUrl('https://www.example.com/path/to/resource')); // true
console.log(isValidUrl('ftp://example.com/file.txt')); // true
console.log(isValidUrl('http://localhost:8080')); // true
console.log(isValidUrl('invalid url')); // false