JavaScript Assignment Week 5

How do I add an array to this code?

class Player { //player class to describe name and postion

constructor(name, position) { //parameters to hold name and position

this.name = name;

this.position = position;

}

describe() { //describes the player

return `${this.name} plays ${this.position}.`; //template literal for our return

}

}

class Team {

constructor(name) {

this.name = name;

this.players = []; //blank array to hold all players

}

addPlayer(player) {

if (player instanceof Player) { //instanceof - to hold array of players, not just a string or number, but a player

this.players.push(player); //push a player to it

} else { //if not player, throw error

throw new Error(`You can only add an instance of Player. Argument is not a player: ${player}`);

}

}

describe() { //describes the team

return `${this.name} has ${this.players.length} players.`; //template literal for name and the length (how many) of players

}

}

class Menu {

constructor() { //not take any argument unlike Team and Player

this.teams = []; //an array of teams

this.selectedTeam = null; //create a variable for team we have selected and manage one team at a time; null - no team is selected

}

start() { //entry point to our application

let selection = this.showMainMenuOptions();

while (selection != 0) {

switch (selection) {

case '1': //if selects 1, then create team

this.createTeam();

break;

case '2': //if selects 2, view a specific team

this.viewTeam();

break;

case '3': //if 3, then delete team

this.deleteTeam();

break;

case '4': //if 4, then display all teams

this.displayTeams();

break;

default: //if anything else, set selection to zero

selection = 0;

}

selection = this.showMainMenuOptions(); //get selection outside our switch, but inside our loop

}

alert('Goodbye!'); //if selects zero

}

showMainMenuOptions() {

return prompt(`

0) exit

1) create new team

2) view team

3) delete team

4) display all teams

`);

}

showTeamMenuOptions(teamInfo) {

return prompt(`

0) back

1) create player

2) delete player

--------------------

${teamInfo}

`);

}

displayTeams() {

let teamString = ''; //use a blank string, so we can build a string

for (let i = 0; i < this.teams.length; i++) { //i less than the length of teams, iterate through our teams

teamString += i + ') ' + this.teams[i].name + ' '; //concatenate variable, create team and new line for each one

}

alert(teamString); //outside our for loop

}

createTeam() {

let name = prompt('Enter name for new team:'); //prompt name

this.teams.push(new Team(name)); //push to our teams array

}

viewTeam() { //view team method

let index = prompt('Enter the index of the team you wish to view:'); //what team they wish to view

if (index > -1 && index < this.teams.length) {

this.selectedTeam = this.teams[index]; //validated teams

let description = 'Team Name: ' + this.selectedTeam.name + ' '; //description = concatenate

for (let i = 0; i < this.selectedTeam.players.length; i++) { //length of players from selectedTeam

description += i + ') ' + this.selectedTeam.players[i].name

+ ' - ' + this.selectedTeam.players[i].position + ' ';

}

let selection = this.showTeamMenuOptions(description);

switch (selection) { //selection is different, submenu

case '1': //create a new player

this.createPlayer();

break;

case '2': //delete a player

this.deletePlayer();

}

}

}

deleteTeam() {

let index = prompt('Enter the index of the team you wish to delete:');

if (index > -1 && index < this.team.length) {

this.teams.splice(index, 1);

}

}

createPlayer() {

let name = prompt('Enter name for new player:');

let position = prompt('Enter position for new player:');

this.selectedTeam.players.push(new Player(name, position));

}

deletePlayer() {

let index = prompt('Enter the index of the player you wish to delete:');

if (index > -1 && index < this.selectedTeam.players.length) { //validate it

this.selectedTeam.players.splice(index, 1); //move at 1

}

}

}

let menu = new Menu();

menu.start();