ajexercise5.js

// Complete the below questions using this array:
const array = [
  {
    username: "john",
    team: "red",
    score: 5,
    items: ["ball", "book", "pen"]
  },
  {
    username: "becky",
    team: "blue",
    score: 10,
    items: ["tape", "backpack", "pen"]
  },
  {
    username: "susy",
    team: "red",
    score: 55,
    items: ["ball", "eraser", "pen"]
  },
  {
    username: "tyson",
    team: "green",
    score: 1,
    items: ["book", "pen"]
  },

];

//Create an array using forEach that has all the usernames with a "!" to each of the usernames
const newArray =[];
array.forEach(user =>{
	let {username} = user;
	
	username = username + "!";
	newArray.push(username);
});
console.log(newArray);

//Create an array using map that has all the usernames with a "? to each of the usernames
const mapArray = array.map(user =>{
	let {username} = user;
	return username + "?"
});
console.log(mapArray);

//Filter the array to only include users who are on team: red
const filterArray = array.filter(user => user.team === 'red');
console.log(filterArray);

//Find out the total score of all users using reduce
const reduceArray = array.reduce((acc, scores)=>{
	let {score} = scores;
	return acc + score
}, 0);
console.log('reduce', reduceArray);

// (1), what is the value of i?
// (2), Make this map function pure:
const arrayNum = [1, 2, 4, 5, 8, 9];
const newerArray = arrayNum.map((num, i) => {
	return num * 2;
})
console.log(newerArray);

//BONUS: create a new list with all user information, but add "!" to the end of each items they own.

  const mapList = array.map(item =>{
  	let {items} = item;
  	return items + "!"
  });
  console.log(mapList);