`toString()` 方法返回一个字符串，表示该`Date`对象。

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## 语法

    dateObj.toString()

### 参数

无

## 描述

`Date`对象覆盖了 `Object` 对象的 `toString()` 方法；它不是继承自 `Object.prototype.toString()`。对于 `Date` 对象，`toString()` 方法返回一个表示该对象的字符串。

该 `toString` 方法总是返回一个美式英语日期格式的字符串。

当一个日期对象被用来作为文本值或用来进行字符串连接时，`toString` 方法会被自动调用。

`toString()` 是通用函数。如果不是`Date`实例，则 返回"Invalid Date"。

## 例子

### 例子： 使用 `toString` 方法

下例把一个`Date`对象的 `toString` 返回值赋给 `myVar：`

    var x = new Date();
    myVar = x.toString(); // 把类似于下面格式的值赋给 myVar，
    // Mon Sep 28 1998 14:36:22 GMT-0700 (Pacific Daylight Time)

## 规范

Specification | Status | Comment
--- | --- | ---
ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.0.
ECMAScript 5.1 (ECMA-262) Date.prototype.toLocaleTimeString | Standard |
ECMAScript 2015 (6th Edition, ECMA-262) Date.prototype.toString | Standard |
ECMAScript Latest Draft (ECMA-262) Date.prototype.toString | 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
`toString` | 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

- `Object.prototype.toString()`
- `Date.prototype.toDateString()`
- `Date.prototype.toLocaleString()`
- `Date.prototype.toTimeString()`