title: Writing a counter to count the number of clicks
body: <p>I have two buttons on my website. Next and previous. I want to write a code to increase the value each time next is clicked and decrease the value each time previous is clicked. I want the value to be shown in an input. But the value shown in input is always 0 and does not change with clicks.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>function count(){
      var $counter=0;
      $(".next-button").click(function() {
           $counter=$counter+1;
      });
      $(".previous").click(function() {
          $counter=$counter-1;
      });
      return $counter;
  }
  
  document.getElementById('counter').value =count();
  </code></pre>