drag and drop files to input type file

gistfile1.txt

$(document).ready(function(){

      $('body').on('dragenter', function(){
        $('input[type="file"]').addClass('drag');
        console.log('enter');
      });

      $('input[type="file"]').on('dragleave', function(e){
        e.stopPropagation();
        $('input[type="file"]').removeClass('drag');
        console.log('leave');
      });

      $('body').on('drop',function(){
        $('input[type="file"]').removeClass('drag');
        $('input[type="file"]').on('change', function (event, files, label) {
          var file_name = this.value.replace(/\\/g, '/').replace(/.*\//, '')
          $('.filename').text(file_name);
        });
      });

    });