array.forEach()

The forEach() method of Array instances executes a provided function once for each array element. 

let fruits = ["apple", "orange", "banana", "mango", "lemon"];

buttonFruits.onclick = function () {
  fruits.forEach(displayFruits);
};

function displayFruits(fruit) {
  document.getElementById("labelFruits").innerHTML += " " + fruit;
}