Ternary Operator

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#1

I don’t understand why the first two ternary expressions are different from the third. I was able to do the first two on my own, but I had trouble with the third. I had to ask them to give me the solution to the third. They use the equal to symbol in the last, but not in the first two equations.

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!”);

#2

isn’t it easier to just to use the log method once and then using a ternary operator determine what should be logged:

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

why would you need equality for the first two? Boolean values are already true or false. For the third you need a comparison/equality to check, to see if a specific string is matched

#3

so you only use the comparison operators when there isn’t a Boolean Value assigned?

#4

This answer can be broken down into two parts, writing isLocked === true result in false (this values are not equal), so you might as well put isLocked, which is already false. So its just a shorthand

the other part is that we can also put:

example_one = 3;
example_two = "hello world"
if (example_one){
   console.log('positive integers are considered true');
}
if (example_two){
   console.log('non-empty strings are true');
}

we don’t have Boolean values here, so the language (JS in this case) will see if the values are truthy. Positive integers and non-empty strings are considered true.

#5

ok , thank you! Appreciate the help