javascript window.open without http://

Question

I have a small tool build with Delphi that collects url\'s from a file or from the clipboard, and than builds a file called test.htm with a content like this :

Answer 1

I think the best way would be to add "//" + url In this case - it isn't important, what protocol (http or https) you expect to receive as a result.

url = url.match(/^https?:/) ? url : '//' + url;
window.open(url, '_blank');

Answer 2

For the behavior you're describing, you have to include your protocol with window.open. You could use a tertiary operator to simply include the protocol if it doesn't already exist:

url = url.match(/^http[s]?:\/\//) ? url : 'http://' + url;

Note that you'll need to use the SSL protocol sometimes, so this is not a complete solution.

Answer 3

I made small changes function form answered by iMoses which worked for me.

Check for both https OR http protocol

if (!url.match(/^http?:\/\//i) || !url.match(/^https?:\/\//i)) {
        url = 'http://' + url;
    }

Hope it make more accurate for other situation !

Answer 4

The only way to do this is to have the application put the http:// in front of every url that does not have it already.

Answer 5

As you suggested, the only way is to add the http protocol to each URL which is missing it. It's a pretty simple and straightforward solution with other benefits to it.

Consider this piece of code:

function windowOpen(url, name, specs) {
    if (!url.match(/^https?:\/\//i)) {
        url = 'http://' + url;
    }
    return window.open(url, name, specs);
}

What I usually do is to also add the functionality of passing specs as an object, which is much more manageable, in my opinion, than a string, even setting specs defaults if needed, and you can also automate the name creation and make the argument optional in case it's redundant to your cause.

Here's an example of how the next stage of this function may look like.

function windowOpen(url, name, specs) {
    if (!url.match(/^https?:\/\//i)) {
        url = 'http://' + url;
    }
    // name is optional
    if (typeof name === 'object') {
        specs = name;
        name = null;
    }
    if (!name) {
        name = 'window_' + Math.random();
    }
    if (typeof specs === 'object') {
        for (var specs_keys = Object.keys(specs), i = 0, specs_array = [];
                i < specs_keys.length; i++) {
            specs_array.push(specs_keys[i] + '=' + specs[specs_keys[i]]);
        }
        specs = specs_array.join(',');
    }
    return window.open(url, name, specs);
}