JavaScript Initial Lab Complete

lab.js

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+let name = "Alex";
+let age = 23;
+let favoriteColor = "blue";
+let likesCoding = true;
+
+console.log("Name: " + name);
+console.log("Age: " + age);
+console.log("Favorite Color: " + favoriteColor);
+console.log("Likes Coding: " + likesCoding);
+
+//1. What is a variable?
+// A variable is a container for storing data values.
+
+//2. What is the difference between `let` and `const`?
+// `let` allows you to reassign the value of a variable, while `const` does not.
+
+//3. What does `console.log()` do?
+// `console.log()` outputs a message to the console.
+
+
+let temperature;
+
+if(temperature >= 60) {
+    console.log("It is warm.");
+} else {
+    console.log("It is cold.");
+}
+
+
+
+let password;
+
+if(password == "javascript123"){
+    console.log("Access granted.");
+}else{
+    console.log("Access denied.");
+}
+
+
+
+let hour;
+
+if(hour < 12) {
+    console.log("Good morning");
+} else if(hour >= 12 && hour < 17) {
+    console.log("Good afternoon");
+} else {
+    console.log("Good evening");
+}
+
+
+//1. What is the purpose of an `if` statement?
+//1. An `if` statement is used to execute a block of code if a specified condition is true.
+
+//2. When would you use `else if`?
+//2. You would use `else if` when you have multiple conditions to check after the initial `if` statement.
+
+//3. What does `===` check for?
+//3. `===` checks for both value and type equality, meaning it returns true only if both the value and type are the same.
+
+
+
+
+
+
+function sayHello() {
+    console.log("Hello, world!");
+}
+
+
+function favoriteFood(food) {
+    console.log("My favorite food is " + food + ".");
+}
+
+function multiply(num1, num2) {
+    return num1 * num2;
+}
+
+
+function isEven(number) {
+    if(number % 2 === 0) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+
+//1. Why are functions useful?
+//1. Functions are useful because they allow you to reuse code, break down complex problems into smaller, more manageable pieces, and improve the readability and organization of your code.
+//2. What is a parameter?
+//2. A parameter is a variable that is used to pass information into a function. It acts as a placeholder for the value that will be provided when the function is called.
+//3. What is the difference between `console.log()` and `return`?
+//3. `console.log()` is used to output a message to the console, while `return` is used to specify the value that a function should output when it is called. `return` also ends the execution of the function, while `console.log()` does not affect the flow of the function.
+
+
+
+
+for(let i = 1; i <= 10; i++) {
+    console.log(i);
+}
+
+
+
+for(let i = 2; i <= 20; i += 2) {
+    console.log(i);
+}
+
+
+let j = 5;
+while(j >= 1) {
+    console.log(j);
+    j--;
+}
+
+
+for(let k = 0; k < 5; k++) {
+    console.log("Practice makes progress");
+}
+
+
+//1. What is a loop used for?
+//1. A loop is used to repeat a block of code multiple times until a specified condition is met.
+//2. When might you use a `for` loop?
+//2. You might use a `for` loop when you know in advance how many times you want to execute a block of code, such as iterating through an array or counting a specific number of iterations.
+//3. What could happen if a loop condition never becomes false?
+//3. If a loop condition never becomes false, it could result in an infinite loop, which can cause the program to crash or become unresponsive.
+
+
+
+
+
+
+function numberChecker(num) {
+    if(num > 0) {
+        console.log("The number is positive.");
+    } else if(num < 0) {
+        console.log("The number is negative.");
+    } else {
+        console.log("The number is zero.");
+    }
+}
+
+
+
+function countdown(num){
+    for(let i = num; i >= 1; i--){
+        console.log(i);
+    }
+}
+
+let studentName;
+let score;
+
+function checkStudentProgress(studentName, score){
+    if(score>=90){
+        console.log("Excellent work, " + studentName + "!");
+    } else if(score>=75 && score < 90){
+        console.log("Good job, " + studentName + "!");
+    } else {
+        console.log("Keep practicing, " + studentName + "!");
+
+    }
+}
+
+
+
+let students = ["Alex", "Bob", "Charlie", "David", "Eve"];
+
+for (let i = 0; i <students.length; i++){
+    console.log(students[i]);
+}