join (JavaScript Array Method)

const tnwNames = ["Hla Hla", "Mya Mya", "Aung Aung", "Maung Maung"];

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

function tnwFun2(){
    document.getElementById("demo").innerHTML = tnwNames.join("
");
}