代码示例:(标识:eg_js_date_getdate)
<!DOCTYPE html>
<html>
<body>

<h2>JavaScript getDate()</h2>

<p>getDate() 方法以数字(1-31)返回日期的日:</p>

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

<script>
var d = new Date();
document.getElementById("demo").innerHTML = d.getDate();
</script>

</body>
</html>
运行结果: