title: How to load content without refresh with multiple querystring
body: <p>I want to load a dynamic content to specific div name with multiple querystring from a menu. </p>
  
  <p>Example dynamic menu link</p>
  
  <pre><code>index.php?tag=2
  index.php?category=1&amp;tag=2
  index.php?category=2&amp;tag=2&amp;location=3
  </code></pre>
  
  <p>Example query process in PHP for link <code>index.php?category=1&amp;tag=2</code></p>
  
  <pre><code>$tag = intval($_GET['tag']);
  $cat = intval($_GET['category']);
  
  if(isset($tag) &amp;&amp; isset($cat)) {
  $select = $db-&gt;query("SELECT * FROM table WHERE cat=".$cat." AND tag=".$tag."");
  ... // fetch results
  }
  </code></pre>
  
  <p>Question - With jQuery how to tell user clicked the link then send the callback to PHP process &amp; show the results in the specific div name without refresh the page.</p>
  
  <p>Let me know</p>