Javascript intro completed

src/amanidrummond/lab.js

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+// =======================
+// Part 1: Variables
+// =======================
+
+
+let name = "Amani";
+let age = 27;
+let favoriteColor = "Pink";
+let likesCoding = true;
+
+
+console.log(name);
+console.log(age);
+console.log(favoriteColor);
+console.log(likesCoding);
+
+/*
+What is a variable?
+A variable is a container that stores data so it can be used later.
+
+What is the difference between let and const?
+let can be changed later, while const stays the same.
+
+What does console.log() do?
+It prints output to the console so we can see results.
+*/
+
+
+// =======================
+// Part 2: Conditionals
+// =======================
+
+
+let temperature = 55;
+
+if (temperature < 60) {
+  console.log("It is cold.");
+} else {
+  console.log("It is warm.");
+}
+
+
+let password = "javascript123";
+
+if (password === "javascript123") {
+  console.log("Access granted");
+} else {
+  console.log("Access denied");
+}
+
+
+let hour = 14;
+
+if (hour < 12) {
+  console.log("Good morning");
+} else if (hour <= 17) {
+  console.log("Good afternoon");
+} else {
+  console.log("Good evening");
+}
+
+/*
+What is the purpose of an if statement?
+It allows the program to make decisions.
+
+When would you use else if?
+When you have multiple conditions to check.
+
+What does === check for?
+It checks if two values are exactly equal.
+*/
+
+
+// =======================
+// Part 3: Functions
+// =======================
+
+
+function sayHello() {
+  console.log("Hello!");
+}
+sayHello();
+
+
+function favoriteFood(food) {
+  console.log("My favorite food is " + food + ".");
+}
+favoriteFood("pizza");
+
+
+function multiply(num1, num2) {
+  return num1 * num2;
+}
+console.log(multiply(4, 5));
+
+
+function isEven(num) {
+  return num % 2 === 0;
+}
+console.log(isEven(6));
+
+/*
+Why are functions useful?
+They help reuse code instead of repeating it.
+
+What is a parameter?
+It is a value passed into a function.
+
+What is the difference between console.log() and return?
+console.log() prints something, return sends a value back.
+*/
+
+
+// =======================
+// Part 4: Loops
+// =======================
+
+
+for (let i = 1; i <= 10; i++) {
+  console.log(i);
+}
+
+
+for (let i = 2; i <= 20; i += 2) {
+  console.log(i);
+}
+
+
+let count = 5;
+while (count >= 1) {
+  console.log(count);
+  count--;
+}
+
+
+for (let i = 0; i < 5; i++) {
+  console.log("Practice makes progress");
+}
+
+/*
+What is a loop used for?
+To repeat code multiple times.
+
+When might you use a for loop?
+When you know how many times to repeat something.
+
+What could happen if a loop condition never becomes false?
+It could create an infinite loop.
+*/
+
+
+// =======================
+// Part 5: Mini Challenges
+// =======================
+
+// Mini Challenge 1
+function checkNumber(num) {
+  if (num > 0) {
+    console.log("Positive");
+  } else if (num < 0) {
+    console.log("Negative");
+  } else {
+    console.log("Zero");
+  }
+}
+checkNumber(-3);
+
+// Mini Challenge 2
+function countdown(num) {
+  for (let i = num; i >= 1; i--) {
+    console.log(i);
+  }
+}
+countdown(5);
+
+// Mini Challenge 3
+let studentName = "Amani";
+let score = 88;
+
+function checkProgress(score) {
+  if (score >= 90) {
+    console.log("Excellent work");
+  } else if (score >= 75) {
+    console.log("Good job");
+  } else {
+    console.log("Keep practicing");
+  }
+}
+checkProgress(score);
+
+// Mini Challenge 4 
+let students = ["Amani", "Chris", "Taylor", "Jordan", "Alex"];
+
+for (let i = 0; i < students.length; i++) {
+  console.log(students[i]);
+}
+
+
+// =======================
+// Stretch Challenges
+// =======================
+
+
+function gradeCalculator(score) {
+  if (score >= 90) 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(gradeCalculator(85));
+
+
+for (let i = 1; i <= 30; i++) {
+  if (i % 3 === 0) {
+    console.log(i);
+  }
+}
+
+
+function repeatName(name, times) {
+  for (let i = 0; i < times; i++) {
+    console.log(name);
+  }
+}
+repeatName("Amani", 3);
+
+
+function oddOrEven(num) {
+  let result = num % 2 === 0 ? "Even" : "Odd";
+  for (let i = 0; i < 10; i++) {
+    console.log(result);
+  }
+}
+oddOrEven(7);
+
+
+// =======================
+// Reflection
+// =======================
+
+/*
+Which topic felt easiest for you?
+Variables and conditionals felt the easiest because they are straightforward.
+
+Which topic felt most challenging?
+Loops were a little harder at first because of the logic.
+
+How do variables, conditionals, functions, and loops work together?
+Variables store data, conditionals make decisions, functions organize code, and loops repeat actions.
+
+What is one question you still have about JavaScript?
+How do these basics connect to building full websites or apps?
+*/