JavaScript 程序将日期减少 1 天

javascriptweb developmentobject oriented programming更新于 2025/8/27 2:20:17

以下是 JavaScript 中将日期减少 1 天的代码 −

示例

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<style>
   body {
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
   }
   .result,.sample {
      font-size: 20px;
      font-weight: 500;
      color: rebeccapurple;
   }
</style>
</head>
<body>
<h1>JavaScript program to decrement a date by 1 day</h1>
<div class="sample"></div>
<div style="color: green;" class="result"></div>
<button class="Btn">Decrement</button>
<h3>Click on the above button to decrement the date by one day</h3>
<script>
   let resEle = document.querySelector(".result");
   let sampleEle = document.querySelector(".sample");
   let date = new Date();
   sampleEle.innerHTML = date;
   document.querySelector(".Btn").addEventListener("click", () => {
      date.setDate(date.getDate() - 1);
      resEle.innerHTML = "New Date = " + date;
   });
</script>
</body>
</html>