Can anyone can give an example for datepicker for jquery mobile.?

I have taken <input type="date"> (html5 control )to add in my application.

But the problem is, I am unable to update the value in to that textbox.

Usually we do  as   document.geElementById('textboxID').value= our result;

But when I am updating the  <input type="date"> textbox its not updating.

Any help.