JavasScript method to redirect most urls: (www., http://, https://)

Question

Is there a JavaScript method that would redirect both of these:

url = 'www.google.com';
url = 'https://www.google.com';

As it seams window.open(url) requires to have the http in front of it or it would redirect to mysite.com/wwwgoogle.com

Or should I use another method to redirect?

The solution would be used for user inputted urls so I need to facilitate for as much input "styles" as possible.

Answer 1

if (!url.startsWith('http://') && !url.startsWith('https://')) 
  url = window.location.protocol + '//' + url;

Thanks Rajesh for the comment

Answer 2

You can even override window.open() function as below so any url which does not starts with http or https this function append http and redirect

please find below code

window.open = function (open) {
        return function (url, name, features) {
        url = addhttp(url);
        return open.call(window, url, name, features);
    };
}(window.open);

function addhttp(url) {
   if (!/^(f|ht)tps?:\/\//i.test(url)) {
      url = "http://" + url;
   }
   return url;
}

window.open("google.com");
window.open("https://www.google.com");

Answer 3

An alternate approach would be to use regex

/^http(s?):\/\//

Sample:

 function hasProtocol(url) { var regex = /^http(s?):\\/\\//; return regex.test(url) } function appendProtocol(url) { console.log("parsing url: ", url) // Take your site's protocol instead of any default value return window.location.protocol + "//" + url; } function parseURL(url) { return hasProtocol(url) ? url: appendProtocol(url); } console.log(parseURL('www.google.com')) console.log(parseURL('http://www.google.com')) console.log(parseURL('https://www.google.com'))