title: HTML5 datepicker prevent past dates
body: <p>I am working on a website for booking movie tickets. What should I set the <code>min</code> attribute to, to prevent past dates in the HTML5 datepicker? (I do not want to use PHP solution mentioned <a href="https://stackoverflow.com/questions/17182544/disable-certain-dates-from-html5-datepicker">here</a>.)</p>
  
  <p>Is there a pure HTML5/Javascript solution for this?</p>