Booleans:

Conecpt of booleans/Main idea

Booleans are a data type in JavaScript that represent one of two values: true or false. They are used for logical operations, comparisons, and control flow in programs.

What are Booleans:

• Booleans are simple data types that are either true or false.

• They are often used in conditional statements to execute specific blocks of code

commen use for Booleans:

• Conditional statements: if, else, structures

• Loops: while, do…while, and for loops

• Logical operations: combining conditions using && (AND),   (OR), and ! (NOT)

Booleans expressions:

A Boolean expression is an expression that evaluates to true or false. Here are a few examples:

• 10 > 5 returns true because 10 is greater than 5.

• 8 === “8” returns false because the value is equal but the type is different (number vs. string).

• isLoggedIn = false; assigns false to the isLoggedIn variable.

Example:

%%js 
let isUserLoggedIn = true;
let isAdmin = false;

if (isUserLoggedIn && isAdmin)
{console.log("Welcome, Admin!");}
else if (isUserLoggedIn) 
{console.log("Welcome, User!");}
else console.log("Please log in.");


<IPython.core.display.Javascript object>

Popcorn Hack #1: Boolean Check:

Create Boolean variables to represent somthing about you

example:

• weather you birthday is today (isBirthday).

• Whether you have completed your chores (completedChores).

• Whether it is raining outside (isRaining). Use console.log() to display a sentence for each.

(you can use any representation, these are just examples)

Example:

%%js 
let isBirthday = false;
let completedChores = true;
let isRaining = false;

console.log("Is today your birthday? " + isBirthday);  // This will print "Is today your birthday? false"
console.log("Have you completed your chores? " + completedChores);  // This will print "Have you completed your chores? true"
console.log("Is it raining outside? " + isRaining);  // This will print "Is it raining outside? false"

<IPython.core.display.Javascript object>

%%js 

let haveSchool = true;
let isBusy = true;
let sleptEnough = false;

console.log("Do you have school today?" + haveSchool);
console.log("Are you busy today? " + isBusy);
console.log("Did you get enough sleep? " + sleptEnough);