JavaScript - Format URL's protocol

Formatting URL with protocol is required when we binding it to anchor tag.

For example below code anchor tag will redirect to relative path because it doesn't have protocol such as Http, Https etc.,

Below code will check protocol exist or not and add in anchor tag

function formatHttp(urlPath) {

    var urlPattern = new RegExp("^(?:f|ht)tps?://");

    if (!urlPattern.test(urlPath)) {

        urlPath = "http://" + urlPath;

    }

    return urlPath;

}

Below example shows in angularJS

HTML:

<a ng-href="{{formatHttp(someurl)}}" href="#" target="_blank"> {{someurl}} </a>

someurl is anything like without protocol "www.google.com" or with protocol "http://www.google.com", "https://www.google.com" etc.,

AngularJS Controller:

$scope.formatHttp = function (url) {

        return formatHttp(url);

};

JS File:

function formatHttp(urlPath) {

    var urlPattern = new RegExp("^(?:f|ht)tps?://");

    if (!urlPattern.test(urlPath)) {

        urlPath = "http://" + urlPath;

    }

    return urlPath;

}