<!DOCTYPE html>
<html>
<body>
<h2>JavaScript const</h2>
<p>定数オブジェクトを再割り当てすることはできません。</p>
<p id="demo"></p>
<script>
try {
const car = {type:"フィアット", model:"500", color:"white"};
car = {type:"ボルボ", model:"EX60", color:"red"};
}
catch (err) {
document.getElementById("demo").innerHTML = err;
}
</script>
</body>
</html>
