jQuery addClass example

Change class name on click in jQuery

HTML

<div class="take">Some information </div>
<div class="add"> </div>

JavaScript

$('.take').on('click touchstart', function(){
  var info = $(this).text();
  var windowW = $(window).width();
  if(windowW <= 670){
  	$('.add').append('<p>Inormation :'+info+'</p>');
  } else {
    $('.add').empty();

  }
});
//Disapear when >= 680
 $(window).on('resize', function() {
    var windowW = $(window).width();
    if(windowW >= 680){
        $('.add').empty();
    }
});