delete 연산자
<p id="demo"></p>
<script>
var hz = {
site:"홈짱닷컴",
host:"Homzzang.com",
open:2012,
};
delete hz.open;
var n = hz.site + " " + hz.host + " " + hz.open;
document.getElementById("demo").innerHTML = n
</script>
결과보기
결과값: 홈짱닷컴 Homzzang.com undefined