javascript как добавить клаcc?

var inputText= document.getElementById("inputText"); 
var hideShow= document.getElementById("hideShow"); 
 
ButtonAdd.addEventListener("click", function(e) { 
  var inputText = document.getElementById("inputText"); 
  var list = document.getElementById('list'); 
 
  var check = document.createElement("input"); 
  check.type = "checkbox"; 
  check.addEventListener("click", function(e) { 
    console.log(text.textContent); 
  }); 
 
  var text = document.createElement("span"); 
  text.textContent = inputText.value; 
 
  var label1 = document.createElement('label'); 
 
  label1.appendChild(check); 
  label1.appendChild(text); 
  list.appendChild(label1); 
}); 
 
hideShow.addEventListener("click", function(e) { 
  var checks = document.querySelectorAll("#list input[type=checkbox]:checked"); 
  checks.forEach(item => item.parentNode.parentNode.className="hides"); 
});

.hides{ 
    display: none; 
  }

<ul id="list"> 
        <label class="hides"> 
<input type="checkbox"><span>dsfd</span> 
        </label> 
</ul> 
<input type="text" name="" id="inputText"> 
<button id="hideShow">hide selected</button> 
<button id="ButtonAdd">Add</button>