JavaScript getTime() 方法

JavaScript 中的 getTime() 方法返回自 1970 年 1 月 1 日起经过的毫秒数。

getTime() 函数的代码如下 −

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;
   }
   .sample {
      font-size: 18px;
      font-weight: 500;
   }
</style>
</head>
<body>
<h1>JavaScript getTime() Method</h1>
<div class="sample"></div>
<button class="Btn">CLICK HERE</button>
<h3>
Click on the above button to get the seconds elapsed since January 1st
1970
</h3>
<script>
   let sampleEle = document.querySelector(".sample");
   let date = new Date();
   document.querySelector(".Btn").addEventListener("click", () => {
      sampleEle.innerHTML = "Seconds elapsed since 01/01/1970 = " + date.getTime();
   });
</script>
</body>
</html>