teffcode/javascript-quiz-5.md

## javascript-quiz-5.md

      
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              javascript-quiz-5.md
            
          
    👋🏼 Welcome 👋🏼


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🚀 English version


What is the output of the following code ?

  A. ["🌮", "🥗", "🍗"]
  B. ReferenceError
  C. ["👕", "🥗", "🍗"]


  👀 Click here to see the correct answer and explanation
  

Correct Answer
Explanation


C. ["👕", "🥗", "🍗"]
Arrays are object in JavaScript and they are passed and assigned by reference. Changing the first element of the clothes, will also modify food: That is, food and clothes point to the same object in memory 🧠


If you want to know more about "by reference vs. by value" 👉🏼 Explaining Value vs. Reference in Javascript | Medium and All you need to know on by reference vs by value | freeCodeCamp


🚀 Spanish version


¿ Qué imprime el siguiente código ?

  A. ["🌮", "🥗", "🍗"]
  B. ReferenceError
  C. ["👕", "🥗", "🍗"]


  👀 Haz click aquí para ver la respuesta correcta y su explicación
  

Respuesta correcta
Explicación


C. ["👕", "🥗", "🍗"]
Los arrays son objetos en JavaScript y se pasan y asignan por referencia. Si cambiamos el primer elemento de clothes también se modificará el array de food, ya que, food y clothes apuntan al mismo objeto en la memoria 🧠


Te dejo estos artículos por si quieres saber más sobre el paso por valor y paso por referencia 👉🏼 Explaining Value vs. Reference in Javascript | Medium and All you need to know on by reference vs by value | freeCodeCamp