// it assumes: valueNames: [ 'name', 'born', {data: ['id']} ]

      var lst = document.getElementById('users')
            lst.addEventListener('click', onClick)
        }//()

        function onClick(el) {
            var selector = 'li'
            var iel = el.target.closest(selector)
            if(!iel) return
            var id = iel.getAttribute('data-id')
            console.log( id )
        }//()

// I hope it helps someone. ps: there is polyfills for closest()