JavaScript Function toString()

toString Syntax

The syntax of the toString() method is:

func.toString()

Here, func is a function.

toString() Parameters

The toString() method does not take any parameters.

toString() Return Value

• Returns a string representing the source code of the function.

Example 1: Using toString() Method

Output

function hello() {
  console("Good morning.");
}

In the above program, we have defined the function hello() and then called the toString() method as hello.toString().

The toString() method returns the whole source code of hello().

Example 2: toString() with Arrow Functions

Output

() => "Hello World!"

In the above example, we have used the toString() method with the arrow functions.

Here, the method returns the whole source code of the given arrow function.

Recommended Reading: JavaScript Object toString()