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Introduction to JavaScript

bookReturning Values from Functions

The primary purpose of a function is to return a value.

The function's space is deleted after its execution, and you rarely output information directly from the function to the console.

The return keyword is used to perform the value return operation, and it signifies the end of the function's execution:


              
1234567

            
function add(a, b) {
  return a + b;
}

let sum = add(25, 30);

console.log("sum =", sum);
copy

In the example above, you can see that the function call (add(25, 30)) is replaced by the value 55 (25 + 30) after the return keyword.

Note

The function completes its execution and returns a value at the point of call, and the function's space is cleared.

It's also essential to understand that the return keyword terminates the execution of the function. Any code after the return statement will not be executed:


              
1234567891011

            
function add(a, b) {
  return a + b;
  console.log("Two numbers added");
  console.log("Two numbers added");
  console.log("Two numbers added");
  console.log("Two numbers added");
}

let numb = add(25, 12);

console.log("numb =", numb);
copy

The console.log() statements after the return statement were not executed.

question mark

What does the return keyword do inside a JavaScript function?

Select the correct answer

¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

Sección 6. Capítulo 5

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bookReturning Values from Functions

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The primary purpose of a function is to return a value.

The function's space is deleted after its execution, and you rarely output information directly from the function to the console.

The return keyword is used to perform the value return operation, and it signifies the end of the function's execution:


              
1234567

            
function add(a, b) {
  return a + b;
}

let sum = add(25, 30);

console.log("sum =", sum);
copy

In the example above, you can see that the function call (add(25, 30)) is replaced by the value 55 (25 + 30) after the return keyword.

Note

The function completes its execution and returns a value at the point of call, and the function's space is cleared.

It's also essential to understand that the return keyword terminates the execution of the function. Any code after the return statement will not be executed:


              
1234567891011

            
function add(a, b) {
  return a + b;
  console.log("Two numbers added");
  console.log("Two numbers added");
  console.log("Two numbers added");
  console.log("Two numbers added");
}

let numb = add(25, 12);

console.log("numb =", numb);
copy

The console.log() statements after the return statement were not executed.

question mark

What does the return keyword do inside a JavaScript function?

Select the correct answer

¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

Sección 6. Capítulo 5
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