`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。

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## 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。

## 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。

## 例子

### 例子：使用`setTime`

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

## 规范

规范版本 | 规范状态 | 注解
--- | --- | ---
ECMAScript 1st Edition. Implemented in JavaScript 1.0 | Standard | Initial definition.
ECMAScript 5.1 (ECMA-262) Date.prototype.setTime | Standard |
ECMAScript 2015 (6th Edition, ECMA-262) Date.prototype.setTime | Standard |

## 浏览器兼容性

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

| Desktop | Mobile | Server
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | Safari on iOS | Samsung Internet | Node.js
`setTime` | Chrome Full support Yes | Edge Full support 12 | Firefox Full support 1 | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android Full support 4 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes | nodejs Full support Yes

### Legend

Full support
  Full support

## 相关链接

- `Date.prototype.getTime()`
- `Date.prototype.setUTCHours()`