JAVASCRIPT

url validator javascript

function validURL(str) {
  var pattern = new RegExp('^(https?://)?'+ // protocol
    '((([a-zd]([a-zd-]*[a-zd])*).)+[a-z]{2,}|'+ // domain name
    '((d{1,3}.){3}d{1,3}))'+ // OR ip (v4) address
    '(:d+)?(/[-a-zd%_.~+]*)*'+ // port and path
    '(?[;&a-zd%_.~+=-]*)?'+ // query string
    '(#[-a-zd_]*)?$','i'); // fragment locator
  return !!pattern.test(str);
}

validate URL in javascript

function isValidURL(string) {
  var res = string.match(/(http(s)?://.)?(www.)?[-a-zA-Z0-9@:%._+~#=]{2,256}.[a-z]{2,6}([-a-zA-Z0-9@:%_+.~#?&//=]*)/g);
  return (res !== null)
};

how to read valid url in javascript new URL()

function isValidHttpUrl(string) {
  let url;
  
  try {
    url = new URL(string);
  } catch (_) {
    return false;  
  }

  return url.protocol === "http:" || url.protocol === "https:";
}

javascript determine if string is valid url

function isValidHttpUrl(string) {
  let url;
  
  try {
    url = new URL(string);
  } catch (_) {
    return false;  
  }

  return url.protocol === "http:" || url.protocol === "https:";
}

validate url javascript

validateurl

validate url in javascript

validate url

Best way to check if a URL is valid

filter_var($url, FILTER_VALIDATE_URL);

if (filter_var($url, FILTER_VALIDATE_URL) === FALSE) {
    die('Not a valid!!');
}