title: can we check url validity with jquery?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/2723140/validating-url-with-jquery-without-the-validate-plugin">Validating url with jQuery without the validate-plugin?</a>  </p>
  </blockquote>
  
  
  
  <p>is there any jquery method to check a url is valid? </p>
  
  <p>or can jquery get <code>http header</code>? some code method like this.</p>
  
  <p>js code:</p>
  
  <pre><code>$('#submit').click(function(){
    var url = $('#url').val();
    // check a url is valid?
  });
  </code></pre>
  
  <p>html code:</p>
  
  <pre><code>&lt;input id="url" name="url" type="text"&gt;
  &lt;input type="submit" name="submit" id="submit" value="submit" /&gt;
  </code></pre>