Randomly selects lunch option between rice or noodles

HTML

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  
<h2 id="result">今天中午吃什麼？</h2>
<button onclick="pickFood()">抽籤！</button>

<script>
function pickFood() {
  let rand = Math.random(); // 0 ~ 1 之間
  if (rand < 0.5) {
    document.getElementById("result").innerText = "便當";
  } else {
    document.getElementById("result").innerText = "炒飯";
  }
}
</script>

</body>
</html>