// Conditional branching: if, '?'

// Sometimes, we need to perform different actions based on different conditions.

// To do that, we can use the if statement and the conditional operator ?, that’s also called a “question mark” operator.

// The “if” statement

// The if(...) statement evaluates a condition in parentheses and, if the result is true, executes a block of code.

let year = 2015;

if (year == 2015) console.log("You are right!");

if (year == 2015) {

console.log("That's correct!");

console.log("You're so smart!");

}

a = 1; //1 means true 0 means false

if (a) {

console.log("true");

a = 0;

}

// The if statement may contain an optional else block. It executes when the condition is falsy.

a = 0; //1 means true 0 means false

if (a) {

console.log("true");

a = 0;

} else {

console.log("false");

}

// Several conditions: “else if”

// Sometimes, we’d like to test several variants of a condition. The else if clause lets us do that.

// For example:

if (year < 2015) {

console.log("Too early...");

} else if (year > 2015) {

console.log("Too late");

} else {

console.log("Exactly!");

}

// ternary operator or Conditional operator ‘?’

let age = 19;

let accessAllowed = age > 18 ? true : false;

console.log(accessAllowed);

let message =

age < 3

? "Hi, baby!"

: age < 18

? "Hello!"

: age < 100

? "Greetings!"

: "What an unusual age!";

console.log(message);