W3cubDocs

Array.prototype.toSource()

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The toSource() method returns a string representing the source code of the array.

Syntax

toSource()

Return value

A string representing the source code of the array.

Description

The toSource method returns the following values:

For the built-in Array object, toSource returns the following string indicating that the source code is not available:
```
  function Array() {
      [native code]
  }
```
For instances of Array, toSource returns a string representing the source code.

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 array.

Examples

Examining the source code of an array

To examine the source code of an array:

var alpha = new Array('a', 'b', 'c');

alpha.toSource();
//returns ['a', 'b', 'c']

Specifications

Not part of any standard. Implemented in JavaScript 1.3.

Browser compatibility

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet	Deno	Node.js
`toSource`	No	No	1-74 Starting in Firefox 74, `toSource()` is no longer available for use by web content. It is still allowed for internal and privileged code.	No	No	No	No	No	4	No	No	No	No	No