title: How to use .unmask() function on MaskedInput jQuery app?
body: <p>I try to use <code>.unmask()</code> function after <code>.blur()</code> (<code>jQuery</code>), but it did not worked.</p>
  
  <p>Please help, this is my code:</p>
  
  <pre><code>$('.cnpj').focus(function()
  {
      $(this).mask('99999999/9999-99');
  })
  .blur(function(e)
  {
     if($(this).val().length == 0)
     {
          var mask = '99999999/9999-99';
          $(this).unmask(mask);
          $(this).val('CNPJ');
     }
  });
  </code></pre>
  
  <p>Here is the HTML code:</p>
  
  <pre><code>&lt;input type="text" id="cnpj" name="cnpj" class="cnpj empty entriesFormInput01" value="CNPJ" /&gt;
  </code></pre>
  
  <p>My goal is that when the user don't put any value in the input, the input return with the same <code>value='CNPJ'</code>, because I have a lot of input in the form and the label is the value, if the user focus in one input and leave, the input will be empty if no value and i want to, when he leaves the input without a value the first value came back again.</p>