Ternary Operator

To simplify the if...else statement we can use a short-hand syntax which is known as ternary operator.

Example:

let isNightTime = true;

if (isNightTime) {
    console.log('Turn on the lights.');
} else {
    console.log('Turn off the lights.');
}

// Output: Turn on the lights.

Above if...else code block can written as down below:

Example:

isNightTime ? console.log('Turn on the lights.') : console.log('Turn off the lights.');

// Output: Turn on the lights.

Example:

let isLocked = false;

isLocked ? console.log('You will need a key to open the door.') : console.log('You will not need a key to open the door.');

let isCorrect = true;

isCorrect ? console.log('Correct!') : console.log('Incorrect!');

let favoritePhrase = 'Love That!';

favoritePhrase === 'Love That!' ? console.log('I love that!') : console.log("I don't love that!");

// Output: You will not need a key to open the door.
//          Correct!
//          I love that!