Date.prototype.getUTCSeconds()
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.
getUTCSeconds()
方法根據世界時回傳指定日期的秒數。
嘗試一下
const moonLanding = new Date("July 20, 1969, 20:18:04 UTC");
console.log(moonLanding.getUTCSeconds());
// Expected output: 4
語法
js
getUTCSeconds()
返回值
若 Date
物件為有效日期,則根據 UTC 時間回傳一個表示秒數、介於 0 至 59 之間的整數;若為無效日期,則回傳 Number.NaN()
。
範例
使用 getUTCSeconds()
下列範例指派當前時間的秒數至變數 seconds
。
js
const today = new Date();
const seconds = today.getUTCSeconds();
規範
Specification |
---|
ECMAScript® 2025 Language Specification # sec-date.prototype.getutcseconds |
瀏覽器相容性
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getUTCSeconds |
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- Full support
- Full support
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