`toTimeString()` 方法以人类易读形式返回一个日期对象时间部分的字符串，该字符串以美式英语格式化。

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## 语法

    dateObj.toTimeString()

## 描述

`Date` 对象的实例引用一个具体的时间点。 调用 `toString` 方法以美式英语和人类易读的形式，返回日期对象的格式化字符串。在 SpiderMonkey 里，该字符串由日期部分（年月日）和其后的时间部分（时分秒和时区）组成。有时会需要获取时间部分的字符串，这可以由 `toTimeString` 方法完成。

The `toTimeString` method is especially useful because compliant engines implementing ECMA-262 may differ in the string obtained from `toString` for `Date` objects, as the format is implementation-dependent; simple string slicing approaches may not produce consistent results across multiple engines.

## 例子

### 例子：`toTimeString` 方法的简单使用

    var d = new Date(1993, 6, 28, 14, 39, 7);

    println(d.toString());     // prints Wed Jul 28 1993 14:39:07 GMT-0600 (PDT)
    println(d.toTimeString()); // prints 14:39:07 GMT-0600 (PDT)

## 规范

规范版本 | 规范状态 | 注解
--- | --- | ---
ECMAScript 3rd Edition | Standard | Initial definition.
ECMAScript 5.1 (ECMA-262) Date.prototype.toTimeString | Standard |
ECMAScript 2015 (6th Edition, ECMA-262) Date.prototype.toTimeString | 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
`toTimeString` | 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.toLocaleTimeString()`
- `Date.prototype.toDateString()`
- `Date.prototype.toString()`