includes (JavaScript Array Method)

const tnwNames = ["Hla Hla", "Mya Mya", "Soe Soe", "Moe Moe"];

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

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