非标准
该特性是非标准的，请尽量不要在生产环境中使用它！

`toSource()` 返回表示源代码的字符串。

## 语法

    dateObj.toSource()
    Date.toSource()

### 返回值

表示`Date` 源代码的字符串

## 描述

`toSource()` 返回以下参数:

- 对于内置的`Date` 对象, `toSource()` 返回以下字符串,表示源代码不可用:

      function Date() {
          [native code]
      }

- 对于`Date`的实例, `toSource()` 返回表示该日期源代码的字符串.

此方法通常由JavaScript内部调用，而不是在代码中显式调用。

## 规范

暂无标准, 在 JavaScript 1.3中实现.

## 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
`toSource` Non-standard | Chrome No support No | Edge No support No | Firefox Full support 1 | IE No support No | Opera No support No | Safari No support No | WebView Android No support No | Chrome Android No support No | Edge Mobile No support No | Firefox Android Full support 4 | Opera Android No support No | Safari iOS No support No | Samsung Internet Android No support No | nodejs No support No

### Legend

Full support
  Full support
No support
  No support
Non-standard. Expect poor cross-browser support.
  Non-standard. Expect poor cross-browser support.

## 相关链接

- `Object.prototype.toSource()`