Function.prototype.toSource()

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

Syntax

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 Function object, 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.

  // For example:
  function hello() {
    console.log("Hello, World!");
  }
  
  hello.toSource();
  

  // Results in:
  "function hello() { 
      console.log(\"Hello, World!\");
  }"

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

See also

• Object.prototype.toSource()