title: How to check if URL is available or not using javascript
body: <p>I am trying to use jQuery to check if URL is available or not. I am using the below Javascript code to verify this but it works for only HTTP URLs. If the URL is HTTPS it fails and I get the error <code>alert</code>. </p>
  
  <pre><code>var backendUrl = "https://myserver:8081/app/test.jsp";
  $.ajax({
      type: "GET",
      url: backendUrl
  }).done(function (result) {
      console.log("working");
      window.location.href = backendUrl;
  }).fail(function () {
      alert(Sorry URL is not access able");
  });
  </code></pre>
  
  <p>Can someone tell me a reason and some more precise way to check if URL is available or not using javascript.</p>