Datapicker allow invalid dates
<p>I need allow date like '99/99/9999' when user doesn't know exact date, how can I implement this?</p>

<pre><code>$('#date').datepicker({
    language: "pt-BR",
    autoclose: true,
    format: 'dd/mm/yyyy',
    todayHighlight: true
})
</code></pre>

<p>Using this code, '99/99/9999' is converted to '07/06/9999'.</p>

<p>Here an example:
<a href="https://jsfiddle.net/bvbtz2re/2/" rel="nofollow noreferrer">https://jsfiddle.net/bvbtz2re/2/</a></p>