copyWithin (JavaScript Array Method)

const people = ["Hla", "Mya", "Aung", "Maung", "Soe", "Noe", "Moe"];

function tnwFun1(){
    document.getElementById("demo").innerHTML = people.join("
");
}

function tnwFun2(){
    const result = people.copyWithin(3, 0, 3);
    document.getElementById("demo").innerHTML = result.join("
");
}