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<!DOCTYPE html>
<html>
<body>
<h1>日期字符串化</h1>
<p>JSON.stringify 将日期转换为字符串</p>
<p id="demo"></p>
<script>
const person = {
  name: "Bill",
  today: new Date()
};
let myString = JSON.stringify(person);
document.getElementById("demo").innerHTML = myString;
</script>
</body>
</html>