title: How to invalid 00/00/0000 date in JS
body: <p>I am using jQuery Validation Plugin. I used <a href="https://stackoverflow.com/questions/511439/custom-date-format-with-jquery-validation-plugin/511471#511471">this post</a> to validate my dates using this plugin. It is working but there is a problem. It is accepting 00/00/0000 date as well. How can I invalid this date as well by modifying following function.</p>
  
  <pre><code>$.validator.addMethod(
      "australianDate",
      function(value, element) {
          return value.match(/^\d\d?\/\d\d?\/\d\d\d\d$/);
      },
      "Please enter a date in the format dd/mm/yyyy"
  );
  </code></pre>