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lab.js

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+// JavaScript Introduction Lab
+// Maxx Blue
+
+// ======================================================
+// Part 1: Variables
+// ======================================================
+
+// A variable stores information that can be used later in the program.
+let myName = "Maxx";
+let myAge = 28;
+let favoriteColor = "Blue";
+let likesCoding = true;
+
+// Print the variables
+console.log("Name:", myName);
+console.log("Age:", myAge);
+console.log("Favorite Color:", favoriteColor);
+console.log("Likes Coding:", likesCoding);
+
+// Check for Understanding
+// 1. What is a variable?
+// A variable is a named container that stores data.
+
+// 2. What is the difference between let and const?
+// let can be changed later, const cannot be changed after it is created.
+
+// 3. What does console.log() do?
+// console.log() prints information to the console.
+
+console.log("================================");
+
+// ======================================================
+// Part 2: Conditionals
+// ======================================================
+
+// Task A
+let temperature = 55;
+
+if (temperature < 60) {
+  console.log("It is cold.");
+} else {
+  console.log("It is warm.");
+}
+
+// Task B
+let password = "javascript123";
+
+if (password === "javascript123") {
+  console.log("Access granted");
+} else {
+  console.log("Access denied");
+}
+
+// Task C
+let hour = 15;
+
+if (hour < 12) {
+  console.log("Good morning");
+} else if (hour >= 12 && hour <= 17) {
+  console.log("Good afternoon");
+} else {
+  console.log("Good evening");
+}
+
+// Check for Understanding
+// 1. What is the purpose of an if statement?
+// An if statement helps the program make decisions.
+
+// 2. When would you use else if?
+// You use else if when you want to check another condition after the first one is false.
+
+// 3. What does === check for?
+// It checks whether two values are exactly equal.
+
+console.log("================================");
+
+// ======================================================
+// Part 3: Functions
+// ======================================================
+
+// Task A
+function sayHello() {
+  console.log("Hello, welcome to JavaScript!");
+}
+
+sayHello();
+
+// Task B
+function favoriteFood(food) {
+  console.log("My favorite food is " + food + ".");
+}
+
+favoriteFood("pizza");
+
+// Task C
+function multiply(num1, num2) {
+  return num1 * num2;
+}
+
+let product = multiply(4, 5);
+console.log("Product:", product);
+
+// Task D
+function isEven(number) {
+  return number % 2 === 0;
+}
+
+console.log("Is 8 even?", isEven(8));
+console.log("Is 7 even?", isEven(7));
+
+// Check for Understanding
+// 1. Why are functions useful?
+// Functions are useful because they let us reuse code instead of rewriting it.
+
+// 2. What is a parameter?
+// A parameter is a value a function receives.
+
+// 3. What is the difference between console.log() and return?
+// console.log() prints a value, while return sends a value back from a function.
+
+console.log("================================");
+
+// ======================================================
+// Part 4: Loops
+// ======================================================
+
+// Task A
+console.log("Numbers 1 through 10:");
+for (let i = 1; i <= 10; i++) {
+  console.log(i);
+}
+
+console.log("----------");
+
+// Task B
+console.log("Even numbers from 2 to 20:");
+for (let i = 2; i <= 20; i += 2) {
+  console.log(i);
+}
+
+console.log("----------");
+
+// Task C
+console.log("Countdown from 5 to 1:");
+let count = 5;
+
+while (count >= 1) {
+  console.log(count);
+  count--;
+}
+
+console.log("----------");
+
+// Task D
+console.log('"Practice makes progress" five times:');
+for (let i = 1; i <= 5; i++) {
+  console.log("Practice makes progress");
+}
+
+// Check for Understanding
+// 1. What is a loop used for?
+// A loop is used to repeat code multiple times.
+
+// 2. When might you use a for loop?
+// You use a for loop when you know how many times you want to repeat something.
+
+// 3. What could happen if a loop condition never becomes false?
+// The loop could run forever and create an infinite loop.
+
+console.log("================================");
+
+// ======================================================
+// Part 5: Combine Everything
+// ======================================================
+
+// Mini Challenge 1: Number Checker
+function numberChecker(num) {
+  if (num > 0) {
+    console.log(num + " is positive.");
+  } else if (num < 0) {
+    console.log(num + " is negative.");
+  } else {
+    console.log(num + " is zero.");
+  }
+}
+
+numberChecker(10);
+numberChecker(-3);
+numberChecker(0);
+
+console.log("----------");
+
+// Mini Challenge 2: Countdown Function
+function countdown(startNumber) {
+  for (let i = startNumber; i >= 1; i--) {
+    console.log(i);
+  }
+}
+
+countdown(5);
+
+console.log("----------");
+
+// Mini Challenge 3: Student Progress Checker
+let studentName = "Maxx";
+let score = 88;
+
+function checkStudentProgress(name, studentScore) {
+  console.log("Student:", name);
+
+  if (studentScore >= 90) {
+    console.log("Excellent work");
+  } else if (studentScore >= 75) {
+    console.log("Good job");
+  } else {
+    console.log("Keep practicing");
+  }
+}
+
+checkStudentProgress(studentName, score);
+
+console.log("----------");
+
+// Mini Challenge 4: Class Roster
+let classRoster = ["Jordan", "Taylor", "Chris", "Morgan", "William"];
+
+console.log("Class Roster:");
+for (let i = 0; i < classRoster.length; i++) {
+  console.log(classRoster[i]);
+}
+
+console.log("================================");
+
+// ======================================================
+// Stretch Challenges
+// ======================================================
+
+// Stretch 1
+function gradeCalculator(score) {
+  if (score >= 90 && score <= 100) {
+    return "A";
+  } else if (score >= 80) {
+    return "B";
+  } else if (score >= 70) {
+    return "C";
+  } else if (score >= 60) {
+    return "D";
+  } else {
+    return "F";
+  }
+}
+
+console.log("Grade for 95:", gradeCalculator(95));
+console.log("Grade for 82:", gradeCalculator(82));
+console.log("Grade for 67:", gradeCalculator(67));
+
+console.log("----------");
+
+// Stretch 2
+console.log("Numbers from 1 to 30 divisible by 3:");
+for (let i = 1; i <= 30; i++) {
+  if (i % 3 === 0) {
+    console.log(i);
+  }
+}
+
+console.log("----------");
+
+// Stretch 3
+function printNameTimes(name, times) {
+  for (let i = 1; i <= times; i++) {
+    console.log(name);
+  }
+}
+
+printNameTimes("William", 3);
+
+console.log("----------");
+
+// Stretch 4
+function oddOrEven(number) {
+  if (number % 2 === 0) {
+    return number + " is even.";
+  } else {
+    return number + " is odd.";
+  }
+}
+
+for (let i = 1; i <= 10; i++) {
+  console.log(oddOrEven(i));
+}
+
+console.log("================================");
+
+// ======================================================
+// Reflection Questions
+// ======================================================
+
+// 1. Which topic felt easiest for you?
+// Variables felt easiest for me.
+
+// 2. Which topic felt most challenging?
+// Loops can be the most challenging because it is easy to make mistakes with conditions.
+
+// 3. How do variables, conditionals, functions, and loops work together in a program?
+// Variables store data, conditionals make decisions, functions organize code into reusable blocks,
+// and loops repeat actions. Together they help build useful programs.
+
+// 4. What is one question you still have about JavaScript?
+// How do arrays and objects work in bigger programs?