📘 JavaScript Homework 4

This repository contains solutions for 3 tasks focused on objects, arrays, and methods in JavaScript. Each task is implemented in a separate file (task-1.js, task-2.js, task-3.js).

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🔹 Task 1: Product Packaging (task-1.js)

A function that checks if all products can fit into a container with limited size.

function isEnoughCapacity(products, containerSize) {
  const total = Object.values(products).reduce((sum, qty) => sum + qty, 0);
  return total <= containerSize;
}

✅ Test Results

isEnoughCapacity({ apples: 2, grapes: 3, carrots: 1 }, 8); 
// true

isEnoughCapacity({ apples: 4, grapes: 6, lime: 16 }, 12); 
// false

isEnoughCapacity({ apples: 1, lime: 5, tomatos: 3 }, 14); 
// true

isEnoughCapacity({ apples: 18, potatos: 5, oranges: 2 }, 7); 
// false

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🔹 Task 2: Average Calories (task-2.js)

A function that calculates the average daily calories consumed over a week. If no data is provided, it returns 0.

function calcAverageCalories(days) {
  if (days.length === 0) return 0;
  const total = days.reduce((sum, item) => sum + item.calories, 0);
  return total / days.length;
}

✅ Test Results

calcAverageCalories([
  { day: "monday", calories: 3010 },
  { day: "tuesday", calories: 3200 },
  { day: "wednesday", calories: 3120 },
  { day: "thursday", calories: 2900 },
  { day: "friday", calories: 3450 },
  { day: "saturday", calories: 3280 },
  { day: "sunday", calories: 3300 }
]);
// 3180

calcAverageCalories([
  { day: "monday", calories: 2040 },
  { day: "tuesday", calories: 2270 },
  { day: "wednesday", calories: 2420 },
  { day: "thursday", calories: 1900 },
  { day: "friday", calories: 2370 },
  { day: "saturday", calories: 2280 },
  { day: "sunday", calories: 2610 }
]);
// 2270

calcAverageCalories([]);
// 0

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🔹 Task 3: Player Profile (task-3.js)

An object representing a player profile with username, play time, and methods to update data and return formatted information.

const profile = {
  username: "Jacob",
  playTime: 300,

  changeUsername(newName) {
    this.username = newName;
  },

  updatePlayTime(hours) {
    this.playTime += hours;
  },

  getInfo() {
    return `${this.username} has ${this.playTime} active hours!`;
  },
};

✅ Test Results

profile.getInfo(); 
// "Jacob has 300 active hours!"

profile.changeUsername("Marco");
profile.getInfo(); 
// "Marco has 300 active hours!"

profile.updatePlayTime(20);
profile.getInfo(); 
// "Marco has 320 active hours!"

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📌 Summary & Reflection

With this homework, you practiced:

• Creating and updating objects
• Iterating over object properties
• Working with arrays of objects
• Adding and using methods inside objects
• Using spread and rest operators
• Applying this to access object properties

These exercises strengthen your foundation in JavaScript and help you write cleaner, reusable code 🚀

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📌 Overview

• Task 1: Product Packaging with object values and reduce
• Task 2: Average calories from an array of objects
• Task 3: Player profile with methods and this