bootstrap navbar click
Hide Bootstrap side navbar when click outside of it

Judging by the class names, I think you're using bootstrap on your site.
If that is the case, then you can just use the in-built nav functionalities provided by Bootstrap itself for toggling your nav


$(window).click(function(e) {
   if($(".navbar-collapse").hasClass("show")){
      $('.navbar-collapse').removeClass("show");
      e.preventDefault();
      }
});
 $('.navbar-collapse').click(function(event){
     event.stopPropagation();
 });