JavaScript getUTCFullYear 函数是一个 Date 函数，它根据通用时间返回给定日期的年份。getUTCFullYear 函数的语法是：
Date.getUTCFullYear()
在此示例中，我们使用 getUTCFullYear 函数从当前日期和时间返回年份。
<!DOCTYPE html>
<html>
<head>
<title> JS </title>
</head>
<body>
<h1> Example </h1>
<script>
var dt = Date();
document.write("Date and Time : " + dt);
document.write("UTC Full Year : " + dt.getUTCFullYear());
</script>
</body>
</html>
Example
Date and Time: Mon Nov 05 2018 10:52:54 GMT+0530 (Indian Standard Time)
UTC Full Year : 2018在此 JavaScript 示例中，我们正在显示自定义日期的 UTC 整年。
<!DOCTYPE html>
<html>
<head>
<title> JavaScriptGetUTCFullYearFunction </title>
</head>
<body>
<h1> JavaScriptgetUTCFullYearFunctionExample </h1>
<script>
var dt = Date("April 1, 2016 10:14:22");
document.write("Date and Time : " + dt);
document.write("UTC Full Year using getUTCFullYear : " + dt.getUTCFullYear());
</script>
</body>
</html>
在此 getUTCFullYear 示例中，我们显示自定义日期的年份，而不显示年份。此示例返回默认年份作为输出。
<!DOCTYPE html>
<html>
<head>
<title> JS </title>
</head>
<body>
<h1> Example </h1>
<script>
var dt = Date("April 1 10:14:22");
document.write("DateTime : " + dt);
document.write("UTC Full Year : " + dt.getUTCFullYear());
</script>
</body>
</html>
Example
DateTime: Sun Apr 01 2001 10:14:22 GMT+0530 (Indian Standard Time)
UTC Full Year : 2001