array to string but remove x code example

Example 1: js delete all from array

var list = [1, 2, 3, 4];
function empty() {
    //empty your array
    list.length = 0;
}
empty();

Example 2: remove elemtns from an array with splice

var fruits = ["Banana", "Orange", "Apple", "Mango", "Kiwi"];
document.getElementById("demo").innerHTML = fruits;

function myFunction() {
  fruits.splice(2, 2);
  document.getElementById("demo").innerHTML = fruits;
}