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Merge pull request #273 from ezzep66/Object.keys-values-entries
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Constructor, operator "new"
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EzequielCaste authored Jul 1, 2020
2 parents 6ef07f3 + a6dbf35 commit c1a59c0
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Yes, it's possible.
Si, es posible.

If a function returns an object then `new` returns it instead of `this`.
Si una función devuelve un objeto, entonces `new` lo devuelve en vez de `this`.

So they can, for instance, return the same externally defined object `obj`:
Por lo tanto pueden, por ejemplo, devolver el mismo objeto definido externamente `obj`:

```js run no-beautify
let obj = {};
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Expand Up @@ -2,9 +2,9 @@ importance: 2

---

# Two functionsone object
# Dos funcionesun objeto

Is it possible to create functions `A` and `B` such as `new A()==new B()`?
Es posible crear las funciones `A` y `B` como `new A()==new B()`?

```js no-beautify
function A() { ... }
Expand All @@ -16,4 +16,4 @@ let b = new B;
alert( a == b ); // true
```

If it is, then provide an example of their code.
Si es posible, entonces proporcione un ejemplo de su código.
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Expand Up @@ -11,11 +11,11 @@ describe("calculator", function() {
calculator.read();
});

it("when 2 and 3 are entered, the sum is 5", function() {
it("cuando se ingresa 2 y 3, la suma es 5", function() {
assert.equal(calculator.sum(), 5);
});

it("when 2 and 3 are entered, the product is 6", function() {
it("cuando se ingresa 2 y 3, el producto es 6", function() {
assert.equal(calculator.mul(), 6);
});

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Expand Up @@ -2,15 +2,15 @@ importance: 5

---

# Create new Calculator
# Crear nueva Calculadora

Create a constructor function `Calculator` that creates objects with 3 methods:
Crear una función constructora `Calculator` que crea objetos con 3 métodos:

- `read()` asks for two values using `prompt` and remembers them in object properties.
- `sum()` returns the sum of these properties.
- `mul()` returns the multiplication product of these properties.
- `read()` pide dos valores usando `prompt` y los recuerda en las propiedades del objeto.
- `sum()` devuelve la suma de estas propiedades.
- `mul()` devuelve el producto de multiplicación de estas propiedades.

For instance:
Por ejemplo:

```js
let calculator = new Calculator();
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Expand Up @@ -8,23 +8,23 @@ describe("Accumulator", function() {
prompt.restore();
});

it("initial value is the argument of the constructor", function() {
it("valor inicial es el argumento del constructor", function() {
let accumulator = new Accumulator(1);

assert.equal(accumulator.value, 1);
});

it("after reading 0, the value is 1", function() {
it("después de leer 0, el valor es 1", function() {
let accumulator = new Accumulator(1);
prompt.returns("0");
accumulator.read();
assert.equal(accumulator.value, 1);
});

it("after reading 1, the value is 2", function() {
it("después de leer 1, el valor es 2", function() {
let accumulator = new Accumulator(1);
prompt.returns("1");
accumulator.read();
assert.equal(accumulator.value, 2);
});
});
});
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Expand Up @@ -5,7 +5,7 @@ function Accumulator(startingValue) {
this.value = startingValue;

this.read = function() {
this.value += +prompt('How much to add?', 0);
this.value += +prompt('Cuánto más agregar?', 0);
};

}
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22 changes: 11 additions & 11 deletions 1-js/04-object-basics/06-constructor-new/3-accumulator/task.md
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Expand Up @@ -2,26 +2,26 @@ importance: 5

---

# Create new Accumulator
# Crear nuevo Acumulador

Create a constructor function `Accumulator(startingValue)`.
Crear una función contructor `Accumulator(startingValue)`.

Object that it creates should:
El objeto que crea debería:

- Store the "current value" in the property `value`. The starting value is set to the argument of the constructor `startingValue`.
- The `read()` method should use `prompt` to read a new number and add it to `value`.
- Almacene el "valor actual" en la propiedad `value`. El valor inicial se establece en el argumento del constructor `startingValue`.
- El método `read()` debe usar `prompt` para leer un nuevo número y agregarlo a `value`.

In other words, the `value` property is the sum of all user-entered values with the initial value `startingValue`.
En otras palabras, la propiedad `value` es la suma de todos los valores ingresados por el usuario con el valor inicial `startingValue`.

Here's the demo of the code:
Aquí está la demostración del código:

```js
let accumulator = new Accumulator(1); // initial value 1
let accumulator = new Accumulator(1); // valor inicial 1

accumulator.read(); // adds the user-entered value
accumulator.read(); // adds the user-entered value
accumulator.read(); // agrega el valor introducido por el usuario
accumulator.read(); // agrega el valor introducido por el usuario

alert(accumulator.value); // shows the sum of these values
alert(accumulator.value); // muestra la suma de estos valores
```

[demo]
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