toLocaleLowerCase() 예제
<button onclick="homzzang()">클릭</button>
<p id="demo"></p>
<script>
function homzzang() {
var str = "홈짱닷컴 Homzzang.com";
var res = str.toLocaleLowerCase();
document.getElementById("demo").innerHTML = res;
}
</script>
결과보기
결과값: 홈짱닷컴 homzzang.com