I've recently had some help adding randomisation on my practice project app and now I'm trying to add the last functionality on it but I can't get around.
I have this app that shuffles 7 objects from an array and presents them as a meal of the day for the entire week. For now, I've been able to have that same array logged 4 times and each of the 4 instances is shuffled from the other, but I've added other 3 arrays for a total of 4, and I'd like to have the app shuffling and logging each of those 4 arrays once.
English is not my primary language hopefully I've been clear enough.
const menu = {
_meal: "",
_price: 0,
//Let set the new value of meal only if it's a string.
set meal(mealToCheck) {
if (typeof mealToCheck === "string") {
return (this._meal = mealToCheck);
}
},
//Let set the new value of price only if it's a number.
set price(priceToCheck) {
if (typeof priceToCheck === "number") {
return (this._price = priceToCheck);
}
},
//If both setters are true, then return a message using them, otherwise return message saying the values are wrong.
get todaysSpecial() {
if (this._meal && this._price) {
return `'s Special is ${this._meal}, for just ${this._price}£!!`;
} else {
return "Meal and Price wasn't entered correctly!!";
}
}
};
//Array for the meal options and respective prices.
let meals = [
{/*1*/name: "Pizza", price: 9},
{/*2*/name: "Steak", price: 13},
{/*3*/name: "Pie", price: 11},
{/*4*/name: "Roast", price: 14},
{/*5*/name: "Moussaka", price: 9},
{/*6*/name: "Lasagne", price: 10},
{/*7*/name: "Tacos", price: 9}
];
let meals1 = [
{/*1*/name: "Omelette", price: 9},
{/*2*/name: "Kebab", price: 13},
{/*3*/name: "Ratatouille", price: 14},
{/*4*/name: "Quiche", price: 9},
{/*5*/name: "Burgers", price: 9},
{/*6*/name: "Hot-Dogs", price: 10},
{/*7*/name: "Burritos", price: 9}
];
let meals2 = [
{/*1*/name: "Bourguignon", price: 10},
{/*2*/name: "Stew", price: 14},
{/*3*/name: "Fish&Chips", price: 15},
{/*4*/name: "Fried Chicken", price: 10},
{/*5*/name: "Cannelloni", price: 10},
{/*6*/name: "Crepes", price: 11},
{/*7*/name: "Gyros", price: 10}
];
let meals3 = [
{/*1*/name: "Greek Salad", price: 11},
{/*2*/name: "Seafood", price: 15},
{/*3*/name: "Falafel", price: 16},
{/*4*/name: "Wraps", price: 11},
{/*5*/name: "Souvlaki", price: 11},
{/*6*/name: "Shawarma", price: 12},
{/*7*/name: "Quesadilla", price: 11}
]
//Shuffle function, creates two variables.
const shuffle = (array) => {
let currentIndex = array.length,
randomIndex;
//The function starts from the array length and ends when reaches 0
while (currentIndex !== 0) {
//Assigns a random number to the variable, and each time it runs, it lowers the max number by 1.
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex--;
//It swaps the current array element, with the one equivalent to the random number index.
[array[currentIndex], array[randomIndex]] = [
array[randomIndex],
array[currentIndex]
];
}
return array;
}
let week = ["Week 1", "Week 2", "Week 3", "Week 4"];
const dayOfTheWeek = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
// meals = shuffle(meals);
//I've created a for loop to go through the new shuffled array.
for (let w = 0; w < week.length; w ) {
console.log("\n" week[w])
meals = shuffle(meals);
for (let i = 0; i < meals.length; i ) {
//In here I'm saying that if the number of meals is equal to the week days, the weekly menu will be printed.
if (meals.length === dayOfTheWeek.length) {
menu.meal = meals[i].name;
menu.price = meals[i].price;
console.log(dayOfTheWeek[i] menu.todaysSpecial);
//If the meals are less, it will print how many need to be added.
} else if (meals.length < dayOfTheWeek.length) {
console.log(`You need to add ${Math.abs(meals.length - dayOfTheWeek.length)} meal(s) to the list!!!`)
break;
//If the meals are more, than it will print how many need to be removed.
} else if (meals.length > dayOfTheWeek.length) {
console.log(`You need to remove ${Math.abs(meals.length - dayOfTheWeek.length)} meal(s) from the list!!!`)
break;
}
}
}CodePudding user response：
Put all the meals arrays in another array:
let all_meals = [meal, meals1, meals2, meals3];
Then you can use all_meals[w] to get the meals for that week.
const menu = {
_meal: "",
_price: 0,
//Let set the new value of meal only if it's a string.
set meal(mealToCheck) {
if (typeof mealToCheck === "string") {
return (this._meal = mealToCheck);
}
},
//Let set the new value of price only if it's a number.
set price(priceToCheck) {
if (typeof priceToCheck === "number") {
return (this._price = priceToCheck);
}
},
//If both setters are true, then return a message using them, otherwise return message saying the values are wrong.
get todaysSpecial() {
if (this._meal && this._price) {
return `'s Special is ${this._meal}, for just ${this._price}£!!`;
} else {
return "Meal and Price wasn't entered correctly!!";
}
}
};
//Array for the meal options and respective prices.
//Array for the meal options and respective prices.
let meals = [
{/*1*/name: "Pizza", price: 9},
{/*2*/name: "Steak", price: 13},
{/*3*/name: "Pie", price: 11},
{/*4*/name: "Roast", price: 14},
{/*5*/name: "Moussaka", price: 9},
{/*6*/name: "Lasagne", price: 10},
{/*7*/name: "Tacos", price: 9}
];
let meals1 = [
{/*1*/name: "Omelette", price: 9},
{/*2*/name: "Kebab", price: 13},
{/*3*/name: "Ratatouille", price: 14},
{/*4*/name: "Quiche", price: 9},
{/*5*/name: "Burgers", price: 9},
{/*6*/name: "Hot-Dogs", price: 10},
{/*7*/name: "Burritos", price: 9}
];
let meals2 = [
{/*1*/name: "Bourguignon", price: 10},
{/*2*/name: "Stew", price: 14},
{/*3*/name: "Fish&Chips", price: 15},
{/*4*/name: "Fried Chicken", price: 10},
{/*5*/name: "Cannelloni", price: 10},
{/*6*/name: "Crepes", price: 11},
{/*7*/name: "Gyros", price: 10}
];
let meals3 = [
{/*1*/name: "Greek Salad", price: 11},
{/*2*/name: "Seafood", price: 15},
{/*3*/name: "Falafel", price: 16},
{/*4*/name: "Wraps", price: 11},
{/*5*/name: "Souvlaki", price: 11},
{/*6*/name: "Shawarma", price: 12},
{/*7*/name: "Quesadilla", price: 11}
];
let all_meals = [meals, meals1, meals2, meals3];
//Shuffle function, creates two variables.
const shuffle = (array) => {
let currentIndex = array.length,
randomIndex;
//The function starts from the array length and ends when reaches 0
while (currentIndex !== 0) {
//Assigns a random number to the variable, and each time it runs, it lowers the max number by 1.
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex--;
//It swaps the current array element, with the one equivalent to the random number index.
[array[currentIndex], array[randomIndex]] = [
array[randomIndex],
array[currentIndex]
];
}
return array;
}
let week = ["Week 1", "Week 2", "Week 3", "Week 4"];
const dayOfTheWeek = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
// meals = shuffle(meals);
//I've created a for loop to go through the new shuffled array.
for (let w = 0; w < week.length; w ) {
console.log("\n" week[w])
let week_meals = shuffle(all_meals[w]);
for (let i = 0; i < meals.length; i ) {
//In here I'm saying that if the number of meals is equal to the week days, the weekly menu will be printed.
if (week_meals.length === dayOfTheWeek.length) {
menu.meal = week_meals[i].name;
menu.price = week_meals[i].price;
console.log(dayOfTheWeek[i] menu.todaysSpecial);
//If the meals are less, it will print how many need to be added.
} else if (week_meals.length < dayOfTheWeek.length) {
console.log(`You need to add ${Math.abs(meals.length - dayOfTheWeek.length)} meal(s) to the list!!!`)
break;
//If the meals are more, than it will print how many need to be removed.
} else if (week_meals.length > dayOfTheWeek.length) {
console.log(`You need to remove ${Math.abs(week_meals.length - dayOfTheWeek.length)} meal(s) from the list!!!`)
break;
}
}
}