Day 2: Mastering JavaScript Logic: If Statements, Loops, and Functions

Conditional Statements

JavaScript provides conditional statements to control the flow of a program based on certain conditions.

if, else if, else

let hour = new Date().getHours();

if (hour < 12) {
    console.log("Good morning!");
} else if (hour < 18) {
    console.log("Good afternoon!");
} else {
    console.log("Good evening!");
}

Loops

Loops allow you to repeatedly execute a block of code. JavaScript supports for, while, and do-while loops.

• for Loop

for (let i = 0; i < 5; i++) {
    console.log(i);
}

• while Loop

let count = 0;

while (count < 3) {
    console.log(count);
    count++;
}

Functions

Functions in JavaScript are reusable blocks of code that perform a specific task. They enhance code organization and maintainability.

function greet(name) {
    return "Hello, " + name + "!";
}

console.log(greet("John"));

const multiply = function (a, b) {
    return a * b;
};

console.log(multiply(5, 3));

Explain the purpose of conditional statements in JavaScript.

Answer: Conditional statements allow us to execute different code blocks based on specified conditions, providing control over the flow of the program.

How does the for loop work in JavaScript?

Answer: The for loop has three parts: initialization, condition, and increment/decrement. It repeatedly executes a block of code until the condition becomes false.

What is the difference between a function declaration and a function expression?

Answer: Function declarations are hoisted, meaning they are processed before the code execution starts. Function expressions are not hoisted and must be defined before use.

Why might you choose to use a while loop over a for loop or vice versa?

Answer: for loops are ideal when the number of iterations is known, while while loops are suitable when the number of iterations is determined by a condition.

“Cracking the Code: Mastering JavaScript Logic with If, Loops, and Functions”
“JavaScript Logic Mastery: Exploring If Statements, Loops, and Functions”
“Unleashing JavaScript Logic: Ifs, Loops, and Functions Demystified”
“Diving Deep into JavaScript Logic: Ifs, Loops, and the Magic of Functions”
“Becoming a JavaScript Logic Pro: If Statements, Loops, and Functions Explored”