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---
id: aa2e6f85cab2ab736c9a9b24
title: Cash Register
isRequired: true
challengeType: 5
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videoUrl: ''
localeTitle: Caja registradora
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---
## Description
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< section id = "description" > Diseñe una función de cajón de la caja registradora < code > checkCashRegister()< / code > que acepte el precio de compra como primer argumento ( < code > price< / code > ), el pago como segundo argumento ( < code > cash< / code > ) y el cajón de efectivo ( < code > cid< / code > ) como tercer argumento. < code > cid< / code > es una matriz 2D que muestra la moneda disponible. La función < code > checkCashRegister()< / code > siempre debe devolver un objeto con una clave de < code > status< / code > y una clave de < code > change< / code > . Devuelva < code > {status: " INSUFFICIENT_FUNDS" , change: []}< / code > si el cajón de efectivo es inferior al cambio debido, o si no puede devolver el cambio exacto. Devuelva < code > {status: " CLOSED" , change: [...]}< / code > con cash-in-drawer como el valor para el < code > change< / code > clave si es igual al cambio debido. De lo contrario, devuelva < code > {status: " OPEN" , change: [...]}< / code > , con el cambio en monedas y billetes, ordenados de mayor a menor, como el valor de la clave de < code > change< / code > . Recuerda usar < a href = "http://forum.freecodecamp.org/t/how-to-get-help-when-you-are-stuck/19514" target = "_blank" > Read-Search-Ask< / a > si te atascas. Trate de emparejar el programa. Escribe tu propio código. < table class = "table table-striped" > < tbody > < tr > < th > Unidad monetaria < / th > < th > Cantidad < / th > < / tr > < tr > < td > Centavo < / td > < td > $ 0.01 (PENNY) < / td > < / tr > < tr > < td > Níquel < / td > < td > $ 0.05 (níquel) < / td > < / tr > < tr > < td > Moneda de diez centavos < / td > < td > $ 0.1 (DIME) < / td > < / tr > < tr > < td > Trimestre < / td > < td > $ 0.25 (TRIMESTRE) < / td > < / tr > < tr > < td > Dólar < / td > < td > $ 1 (DÓLAR) < / td > < / tr > < tr > < td > Cinco dólares < / td > < td > $ 5 (CINCO) < / td > < / tr > < tr > < td > Diez dólares < / td > < td > $ 10 (DIEZ) < / td > < / tr > < tr > < td > Veinte dólares < / td > < td > $ 20 (VEINTE) < / td > < / tr > < tr > < td > Cien dolares < / td > < td > $ 100 (100) < / td > < / tr > < / tbody > < / table > < / section >
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## Instructions
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< section id = "instructions" >
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< / section >
## Tests
< section id = 'tests' >
```yml
tests:
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- text: '< code > checkCashRegister(19.5, 20, [[" PENNY" , 1.01], [" NICKEL" , 2.05], [" DIME" , 3.1], [" QUARTER" , 4.25], [" ONE" , 90], [" FIVE" , 55], [" TEN" , 20], [" TWENTY" , 60], [" ONE HUNDRED" , 100]])</ code > debe devolver un objeto.'
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testString: 'assert.deepEqual(Object.prototype.toString.call(checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]])), "[object Object]", "< code > checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]])< / code > should return an object.");'
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- text: '< code > checkCashRegister(19.5, 20, [[" PENNY" , 1.01], [" NICKEL" , 2.05], [" DIME" , 3.1], [" QUARTER" , 4.25], [" ONE" , 90], [" FIVE" , 55], [" TEN" , 20], [" TWENTY" , 60], [" ONE HUNDRED" , 100]])</ code > debe devolver < code > {status: " OPEN" , change: [[" QUARTER" , 0.5]]}</ code > .'
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testString: 'assert.deepEqual(checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]), {status: "OPEN", change: [["QUARTER", 0.5]]}, "< code > checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]])< / code > should return < code > {status: "OPEN", change: [["QUARTER", 0.5]]}< / code > .");'
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- text: '< code > checkCashRegister(3.26, 100, [[" PENNY" , 1.01], [" NICKEL" , 2.05], [" DIME" , 3.1], [" QUARTER" , 4.25], [" ONE" , 90], [" FIVE" , 55], [" TEN" , 20], [" TWENTY" , 60], [" ONE HUNDRED" , 100]])</ code > debe devolver < code > {status: " OPEN" , change: [[" TWENTY" , 60], [" TEN" , 20], [" FIVE" , 15], [" ONE" , 1], [" QUARTER" , 0.5], [" DIME" , 0.2], [" PENNY" , 0.04]]}</ code > .'
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testString: 'assert.deepEqual(checkCashRegister(3.26, 100, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]), {status: "OPEN", change: [["TWENTY", 60], ["TEN", 20], ["FIVE", 15], ["ONE", 1], ["QUARTER", 0.5], ["DIME", 0.2], ["PENNY", 0.04]]}, "< code > checkCashRegister(3.26, 100, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]])< / code > should return < code > {status: "OPEN", change: [["TWENTY", 60], ["TEN", 20], ["FIVE", 15], ["ONE", 1], ["QUARTER", 0.5], ["DIME", 0.2], ["PENNY", 0.04]]}< / code > .");'
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- text: '< code > checkCashRegister(19.5, 20, [[" PENNY" , 0.01], [" NICKEL" , 0], [" DIME" , 0], [" QUARTER" , 0], [" ONE" , 0], [" FIVE" , 0], [" TEN" , 0], [" TWENTY" , 0], [" ONE HUNDRED" , 0]])</ code > debe devolver < code > {status: " INSUFFICIENT_FUNDS" , change: []}</ code > .'
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testString: 'assert.deepEqual(checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]), {status: "INSUFFICIENT_FUNDS", change: []}, "< code > checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]])< / code > should return < code > {status: "INSUFFICIENT_FUNDS", change: []}< / code > .");'
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- text: '< code > checkCashRegister(19.5, 20, [[" PENNY" , 0.01], [" NICKEL" , 0], [" DIME" , 0], [" QUARTER" , 0], [" ONE" , 1], [" FIVE" , 0], [" TEN" , 0], [" TWENTY" , 0], [" ONE HUNDRED" , 0]])</ code > debe devolver < code > {status: " INSUFFICIENT_FUNDS" , change: []}</ code > .'
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testString: 'assert.deepEqual(checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 1], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]), {status: "INSUFFICIENT_FUNDS", change: []}, "< code > checkCashRegister(19.5, 20, [["PENNY", 0.01], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 1], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]])< / code > should return < code > {status: "INSUFFICIENT_FUNDS", change: []}< / code > .");'
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- text: '< code > checkCashRegister(19.5, 20, [[" PENNY" , 0.5], [" NICKEL" , 0], [" DIME" , 0], [" QUARTER" , 0], [" ONE" , 0], [" FIVE" , 0], [" TEN" , 0], [" TWENTY" , 0], [" ONE HUNDRED" , 0]])</ code > debe devolver < code > {status: " CLOSED" , change: [[" PENNY" , 0.5], [" NICKEL" , 0], [" DIME" , 0], [" QUARTER" , 0], [" ONE" , 0], [" FIVE" , 0], [" TEN" , 0], [" TWENTY" , 0], [" ONE HUNDRED" , 0]]}</ code > .'
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testString: 'assert.deepEqual(checkCashRegister(19.5, 20, [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]), {status: "CLOSED", change: [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]}, "< code > checkCashRegister(19.5, 20, [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]])< / code > should return < code > {status: "CLOSED", change: [["PENNY", 0.5], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]}< / code > .");'
```
< / section >
## Challenge Seed
< section id = 'challengeSeed' >
< div id = 'js-seed' >
```js
function checkCashRegister(price, cash, cid) {
var change;
// Here is your change, ma'am.
return change;
}
// Example cash-in-drawer array:
// [["PENNY", 1.01],
// ["NICKEL", 2.05],
// ["DIME", 3.1],
// ["QUARTER", 4.25],
// ["ONE", 90],
// ["FIVE", 55],
// ["TEN", 20],
// ["TWENTY", 60],
// ["ONE HUNDRED", 100]]
checkCashRegister(19.5, 20, [["PENNY", 1.01], ["NICKEL", 2.05], ["DIME", 3.1], ["QUARTER", 4.25], ["ONE", 90], ["FIVE", 55], ["TEN", 20], ["TWENTY", 60], ["ONE HUNDRED", 100]]);
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```
< / div >
< / section >
## Solution
< section id = 'solution' >
```js
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// solution required
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```
< / section >
