The `setUTCHours()` method sets the hour for a specified date according to universal time, and returns the number of milliseconds since 1 January 1970 00:00:00 UTC until the time represented by the updated `Date` instance.

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## Syntax

    dateObj.setUTCHours(hoursValue[, minutesValue[, secondsValue[, msValue]]])

### 参数

`hoursValue`
  表示小时的整数，取值0到23之间。
`minutesValue`
  可选参数。表示分钟的整数，取值0到59之间。
`secondsValue`
  可选参数。表示秒数的整数，取值0到59之间。如果指定了该参数，就要同时指定`minutesValue这个参数。`
`msValue`
  可选参数。表示毫秒的整数，取值0到999之间。如果指定了该参数，就要指定`minutesValue和secondsValue这两个参数。`

### 返回值

返回从1970-01-01 00:00:00 UTC 到更新后的日期所表示时间的毫秒数。

## 描述

If you do not specify the `minutesValue`, `secondsValue`, and `msValue` parameters, the values returned from the `getUTCMinutes()`, `getUTCSeconds()`, and `getUTCMilliseconds()` methods are used.

If a parameter you specify is outside of the expected range, `setUTCHours()` attempts to update the date information in the `Date` object accordingly. For example, if you use 100 for `secondsValue`, the minutes will be incremented by 1 (`minutesValue + 1`), and 40 will be used for seconds.

## 例子

### 使用 `setUTCHours()`

    var theBigDay = new Date();
    theBigDay.setUTCHours(8);

## 规范

Specification | Status | Comment
--- | --- | ---
ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.3.
ECMAScript 5.1 (ECMA-262) Date.prototype.setUTCHours | Standard |
ECMAScript 2015 (6th Edition, ECMA-262) Date.prototype.setUTCHours | Standard |
ECMAScript Latest Draft (ECMA-262) Date.prototype.setUTCHours | Draft |

## 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
`setUTCHours` | 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.getUTCHours()`
- `Date.prototype.setHours()`