我們的志工尚未將本文翻譯為 正體中文 (繁體) 版本。加入我們，幫忙翻譯！
您也可以閱讀本文的 English (US) 版本。
Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
The toSource() method returns a string representing the source code of the object.
Syntax
function.toSource(); Function.toSource();
Return value
A string representing the source code of the object.
Description
The toSource method returns the following values:
- For the built-in
Functionobject,toSource()returns the following string indicating that the source code is not available:function Function() { [native code] } - For custom functions,
toSource()returns the JavaScript source that defines the object as a string.
This method is usually called internally by JavaScript and not explicitly in code. You can call toSource while debugging to examine the contents of an object.
Specifications
Not part of any standard. Implemented in JavaScript 1.3.
Browser compatibility
The compatibility table on 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.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | No | No | 1 | No | No | No |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | No | No | No | 4 | No | No | No |