Marth
Marth
Sep 3, 2024

JS For Cats - Lesson 2: Functions & Loops

This lesson dives into more complex JavaScript concepts: Functions: Reusable blocks of code that perform specific tasks. You learn how to create your own functions and use built-in JavaScript functions. Built-in Functions: Pre-existing functions in JavaScript that you can use, like console.log(). Loops: A way to repeat tasks efficiently without writing the same code multiple times. Key takeaway: After this lesson, you should be able to create and use functions, understand some built-in JavaScript functions, and use loops to repeat tasks.

Lesson 2: Functions and Loops

Functions: Your Own Commands

Functions are reusable blocks of code that perform specific tasks. They're like teaching your cat a new trick:

function meow(times) {
  for (var i = 0; i < times; i++) {
    console.log("Meow!");
  }
}

meow(3); // This will print "Meow!" three times

Built-in Functions

JavaScript comes with many built-in functions. For example, console.log() is a function that prints things to the console:

console.log("I'm a cat!");

Loops: Repeating Tasks

Loops allow you to repeat a task multiple times without writing the same code over and over. It's like telling your cat to chase its tail for a specific number of rounds:

for (var i = 0; i < 5; i++) {
  console.log("Chasing tail, round " + (i + 1));
}

This will print "Chasing tail, round X" five times, where X goes from 1 to 5.

codingresource