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Aprende Using Functions | Functions
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bookUsing Functions

Why Use Functions?

Repeating code makes programs long and hard to maintain. Functions let you group commands into a reusable block, reducing repetition and making your code cleaner.

How to call Functions?

To call a function, simply use its name followed by parentheses, placing any required arguments inside those parentheses.

In the example below, the greet function is called on line 5 by adding parentheses to its name and passing "Alice" as the name argument.

A Simple Function Example

12345
function greet(name) { console.log("Hello, " + name + "!"); } greet("Alice");
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Here’s what happens when you call greet("Alice"):

  1. JavaScript looks for the function named greet.
  2. It passes the string "Alice" as the argument for the parameter name.
  3. Inside the function, the console.log statement concatenates "Hello, ", the value "Alice", and "!" to create the full greeting.
  4. The final message "Hello, Alice!" is then printed to the console.
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Solución

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bookUsing Functions

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Why Use Functions?

Repeating code makes programs long and hard to maintain. Functions let you group commands into a reusable block, reducing repetition and making your code cleaner.

How to call Functions?

To call a function, simply use its name followed by parentheses, placing any required arguments inside those parentheses.

In the example below, the greet function is called on line 5 by adding parentheses to its name and passing "Alice" as the name argument.

A Simple Function Example

12345
function greet(name) { console.log("Hello, " + name + "!"); } greet("Alice");
copy

Here’s what happens when you call greet("Alice"):

  1. JavaScript looks for the function named greet.
  2. It passes the string "Alice" as the argument for the parameter name.
  3. Inside the function, the console.log statement concatenates "Hello, ", the value "Alice", and "!" to create the full greeting.
  4. The final message "Hello, Alice!" is then printed to the console.
Tarea

Swipe to start coding

Solución

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¿Todo estuvo claro?

¿Cómo podemos mejorarlo?

¡Gracias por tus comentarios!

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Completion rate improved to 3.57
Sección 2. Capítulo 1
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