Element dołączania JavaScript do tablicy
var colors= ["red","blue"];
colors.push("yellow");
Friendly Hawk
var colors= ["red","blue"];
colors.push("yellow"); var colors=["red","blue"];
var index=1;
//insert "white" at index 1
colors.splice(index, 0, "white"); //colors = ["red", "white", "blue"]
array.push(element)var fruits = ["222", "vvvv", "eee", "eeee"];
fruits.push("Kiwi"); const arr = [1, 2, 3, 4];
arr.push(5);
console.log(arr); // [1, 2, 3, 4, 5]
// another way
let arr = [1, 2, 3, 4];
arr = [...arr, 5];
console.log(arr); // [1, 2, 3, 4, 5]var s = new Set();
// Adding alues
s.add('hello');
s.add('world');
s.add('hello'); // already exists
// Removing values
s.delete('world');
var array = Array.from(s);