JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app ng-controller="TestController">
    <input type="text" ng-model="a">
    <br>a={{a}}
    <br>
    <br>Link = <a ng-href="https://www.facebook.com/sharer/sharer.php?u={{a}}" target="_blank">facebook</a>

</div>

JavaScript

function TestController($scope) {
    $scope.a = window.location.href;
}