Adding to the Pull Down menu in Touch

[GCXO]

I've figured it out. For anyone else who needs to do this

Code:

document.addEventListener('DOMContentLoaded', function() {
        var container = document.querySelector('.sidebar');
        var ul = container.querySelector('ul');
        var li = document.createElement("li");
        var span = document.createElement("span");
        span.classList.add('a');
     
        var link = document.createElement("a");
        link.href = "#"; 
        link.textContent = "Nuevo Link"; 
       
        span.appendChild(link);
 
        li.addEventListener('click', HaceClick);
        li.classList.add('level-1');
        li.appendChild(span);
     
 
        var referenceNode = ul.getElementsByTagName("li")[3]; // Insert before 3rd in the list
        ul.insertBefore(li, referenceNode);   
  });

function HaceClick() {
        alert('Ha pulsado Nuevo Link!');
     
    }

It will appear in the left sidebar menu