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Showing content from http://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Date/getUTCHours below:

Date.prototype.getUTCHours() - JavaScript | MDN

Baseline Widely available

getUTCHours() 方法以世界时为标准，返回一个指定的日期对象的小时数。

const date1 = new Date("December 31, 1975, 23:15:30 GMT+11:00");
const date2 = new Date("December 31, 1975, 23:15:30 GMT-11:00");

console.log(date1.getUTCHours());
// Expected output: 12

console.log(date2.getUTCHours());
// Expected output: 10

无。

getUTCHours() 返回一个 0 到 23 的整数。

下例将当前时间的小时部分赋值给变量 hours。

var today = new Date();
var hours = today.getUTCHours();

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