title: Check condition before changing slide in Slick Slider
body: <p>I am using this popular carousel (<a href="http://kenwheeler.github.io/slick/" rel="nofollow">http://kenwheeler.github.io/slick/</a>).</p>
  
  <p>I have placed certain elements inside each slide. At least one of these elements must be selected by the user before moving to the next slide. But I cannot figure out how to prevent the user from manually moving to next slide by clicking the 'next' arrow before selecting an element. </p>
  
  <p>I know that 'next/previous' arrows can be disabled but I do not want to do that as the user might want to go back to previous slide to change his option.</p>
  
  <p>I know that one option is to disable default arrows and introduce my own prev/next arrows and then bind slide changing functionality to it along with condition checking. But it would be great if there is some built-in option in this slider (which I am not able to figure out) as it would minimize my effort. </p>