Date.prototype.setTime()

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.

setTime() 方法以一个表示从 1970-1-1 00:00:00 UTC 计时的毫秒数为来为 Date 对象设置时间。

尝试一下

const launchDate = new Date("July 1, 1999, 12:00:00");
const futureDate = new Date();
futureDate.setTime(launchDate.getTime());

console.log(futureDate);
// Expected output: "Thu Jul 01 1999 12:00:00 GMT+0200 (CEST)"

const fiveMinutesInMillis = 5 * 60 * 1000;
futureDate.setTime(futureDate.getTime() + fiveMinutesInMillis);

console.log(futureDate);
// Expected output: "Thu Jul 01 1999 12:05:00 GMT+0200 (CEST)"
// Note: your timezone may vary

语法

dateObj.setTime(timeValue)

参数

timeValue

一个整数,表示从 1970-1-1 00:00:00 UTC 开始计时的毫秒数。

返回值

UTC 1970 年 1 月 1 日 00:00:00 与更新日期之间的毫秒数(实际上是自变量的值)。

描述

使用 setTime 方法用来把一个日期时间赋值给另一个 Date 对象。

示例

示例:使用setTime

theBigDay = new Date("July 1, 1999");
sameAsBigDay = new Date();
sameAsBigDay.setTime(theBigDay.getTime());

规范

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

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
setTime

Legend

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Full support
Full support

参见