Simple show and hidden any component linked with upload in pure Javascript.

show_hide.js

/**
 * Show or hidden upload degree
 */
 
//Element action
var elUploadAction = document.getElementById('uploadDefaultButton');

//check if action is true
if(elUploadAction){

  //Real action
  var showHiddenUpload = function(){
    var elHides = document.querySelectorAll('.degree-upload');
    var numelHides = elHides.length;
    var status;

    while(numelHides--){
      if(window.getComputedStyle(elHides[numelHides], null).getPropertyValue('display') === 'none'){
        status = true;
        elHides[numelHides].style.display ='inherit';
      }else{
        elHides[numelHides].style.display = 'none';
        status = false;
      }
      if(!numelHides){
        if(status){
          this.innerHTML = 'hide';
        }else{
          this.innerHTML = 'send';
        }
        numelHides = elHides.length;
        break;
      }
    }

  };
  
}

elUploadAction.addEventListener('click', showHiddenUpload, false);