Date.prototype.getUTCHours()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

getUTCHours() 方法根據世界時回傳指定日期的小時數。

嘗試一下

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

語法

js
getUTCHours()

返回值

Date 物件為有效日期,則根據 UTC 時間回傳一個表示小時、介於 0 至 23 之間的整數;若為無效日期,則回傳 Number.NaN()

範例

使用 getUTCHours()

下列範例指派當前時間的小時至變數 hours

js
const today = new Date();
const hours = today.getUTCHours();

規範

Specification
ECMAScript® 2025 Language Specification
# sec-date.prototype.getutchours

瀏覽器相容性

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