130 lines
3.4 KiB
JavaScript
130 lines
3.4 KiB
JavaScript
const game = {
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team1: "Bayern Munich",
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team2: "Borrussia Dortmund",
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players: [
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[
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"Neuer",
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"Pavard",
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"Martinez",
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"Alaba",
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"Davies",
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"Kimmich",
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"Goretzka",
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"Coman",
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"Muller",
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"Gnarby",
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"Lewandowski",
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],
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[
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"Burki",
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"Schulz",
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"Hummels",
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"Akanji",
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"Hakimi",
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"Weigl",
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"Witsel",
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"Hazard",
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"Brandt",
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"Sancho",
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"Gotze",
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],
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],
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score: "4:0",
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scored: ["Lewandowski", "Gnarby", "Lewandowski", "Hummels"],
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date: "Nov 9th, 2037",
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odds: {
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team1: 1.33,
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x: 3.25,
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team2: 6.5,
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},
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};
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const [player1, player2] = game.players;
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const [gk, ...fieldPlayers] = player1;
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const allPlayers = [...player1, ...player2];
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const playersFinal = [...player1, "Thiago", "Countinho", "Periscic"];
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const {
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odds: { team1, x: draw, team2 },
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} = game;
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const printGoals = function (...players) {
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console.log(`${players.length} goals we are scored`);
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};
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team1 < team2 && console.log("Team 1 is more likely to win");
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team1 > team2 && console.log("Team 2 is more likely to win");
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printGoals(...game.scored);
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const weekdays = ["mon", "tue", "wed", "thu", "fri", "sat", "sun"];
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// sehe den Kommentar unten
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const openingHours = {
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[weekdays[3]]: {
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open: 12,
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close: 22,
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},
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[weekdays[4]]: {
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open: 11,
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close: 23,
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},
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[weekdays[5]]: {
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open: 0, // Open 24 hours
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close: 24,
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},
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};
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const restaurant = {
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name: "Classico Italiano",
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location: "Via Angelo Tavanti 23, Firenze, Italy",
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categories: ["Italian", "Pizzeria", "Vegetarian", "Organic"],
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starterMenu: ["Focaccia", "Bruschetta", "Garlic Bread", "Caprese Salad"],
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mainMenu: ["Pizza", "Pasta", "Risotto"],
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order: function (starterIndex, mainIndex) {
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return [this.starterMenu[starterIndex], this.mainMenu[mainIndex]];
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},
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// man kann ein Objekt außerhalb eines anderen Objectes definieren, und es nachträglich bei einem anderen Objekt verwenden
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openingHours,
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orderDelivery: function ({
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starterIndex = 1,
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mainIndex = 0,
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time = "20:00",
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address,
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}) {
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console.log(
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`Order recieved! ${this.starterMenu[starterIndex]} and ${this.mainMenu[mainIndex]} will be delivered to ${address} at ${time}`
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);
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},
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};
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for (const day of weekdays) {
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console.log(day);
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// Funktionalität vom nullish und optional chaning Operatoren
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// (man vermeindet eine Fehler-Ausgabe wenn ein Wert nicht existiert, als auch wenn ein Wert "0" ist)
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const open = restaurant.openingHours[day]?.open ?? "closed";
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console.log(`On ${day} we open at ${open}`);
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}
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// console.log(openingHours);
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// console.log(restaurant.openingHours.sum?.open);
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const menu = [...restaurant.starterMenu, ...restaurant.mainMenu];
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for (const item of menu) {
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console.log(item);
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}
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for (const [index, item] of menu.entries()) {
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// console.log(item);
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// console.log(`${item[0]} : ${item[1]}`);
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// console.log(...item);
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console.log(`${index} : ${item}`);
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}
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// optional chaning Operator, gibt kein Fehler aus, wenn eine Eigenschaft/Variable/Wert eines Objektes nicht existiert
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console.log(restaurant.openingHours.mon?.open);
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const users = [];
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// längere Version der Überprüfung
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if (users.length > 0) console.log(users[0].name);
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else console.log("User array is empty");
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// kurzere Version Mithilfe des Optional chaining Operators und mit dem nullish Operator
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console.log(users[0]?.name ?? "User array is empty");
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