html运行实例（jsck_gettime_year）-搜寻教程库

代码示例：（标识：jsck_gettime_year）

<!DOCTYPE html>
<html>
<body>

<p>单击该按钮可计算自 1970 年 1 月 1 日午夜以来的年数。</p>

<button onclick="myFunction()">试一试</button>

<p id="demo"></p>

<script>
function myFunction() {
  var minutes = 1000 * 60;
  var hours = minutes * 60;
  var days = hours * 24;
  var years = days * 365;
  var d = new Date();
  var t= d.getTime();

  var y = Math.round(t / years);

  document.getElementById("demo").innerHTML = y;
}
</script>

</body>
</html>