_^(?:(?:https?|ftp)://)(?:\S+(?::\S*)?@)?(?:(?!10(?:\.\d{1,3}){3})(?!127(?:\.\d{1,3}){3})(?!169\.254(?:\.\d{1,3}){2})(?!192\.168(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\x{00a1}-\x{ffff}0-9]+-?)*[a-z\x{00a1}-\x{ffff}0-9]+)(?:\.(?:[a-z\x{00a1}-\x{ffff}0-9]+-?)*[a-z\x{00a1}-\x{ffff}0-9]+)*(?:\.(?:[a-z\x{00a1}-\x{ffff}]{2,})))(?::\d{2,5})?(?:/[^\s]*)?$_iuS

(https?:\/\/(?:www\.|(?!www))[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9]\.[^\s]{2,}|www\.[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9]\.[^\s]{2,}|https?:\/\/(?:www\.|(?!www))[a-zA-Z0-9]+\.[^\s]{2,}|www\.[a-zA-Z0-9]+\.[^\s]{2,})

​

^http[s]?:\/\/(www\.)?(.*)?\/?(.)*

// All are 'non-capturing' regular expressions.

​

// General format of a URL in a RegEx:

(?:(?:https?|ftp):\/\/)?(?:www\.)?[^/\r\n]+(?:/[^\r\n]*)?

​

// To enforce the protocol

(?:https?|ftp):\/\/(?:www\.)?[^/\r\n]+

​

// To enforce the protocol and trailing slash

(?:https?|ftp):\/\/(?:www\.)?[^/\r\n]+(?:/[^\r\n]*)

​

// To enforce file extensions like .html or .png:

(?:(?:https?|ftp):\/\/)?(?:www\.)?[^/\r\n]+(?:/[^\r\n]*)(?:[a-zA-Z0-9]+.(?:html|png|webp|js))

​

// To implement in GO (https://go.dev), add an extra backslash (' \ ') to every unescaped backslash (' \ ')

​

// For the first format, that is:

(?:(?:https?|ftp):\\/\\/)?(?:www\\.)?[^/\r\n]+(?:/[^\r\n]*)?

​

// You do not need to add the extra backslash to the '\r' and '\n' because it is handled natively

  const isUrlValid = (url: string) => {

    const urlMatcher =

      /^[(http(s)?):\/\/(www\.)?a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/i;

    return !!url?.match(new RegExp(urlMatcher));

  }

/^https?:\/\/(?:www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b(?:[-a-zA-Z0-9()@:%_\+.~#?&\/=]*)$/

https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)

​

​

// It will include the space before as well (if it has one)

​

/(^| )(https?:\/\/)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,8}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)/gi

var expression = /[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)?/gi;

var regex = new RegExp(expression);

var t = 'www.google.com';

​

if (t.match(regex)) {

  alert("Successful match");

} else {

  alert("No match");

}

 Run code snippet

^(ht|f)tp(s?)\:\/\/[0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*(:(0-9)*)*(\/?)([a-zA-Z0-9\-\.\?\,\'\/\\\+&%\$#_]*)?$