Hey, meme!

banana

What happens in JavaScript if we type a variable whose value is “b”+”a”+ + “a” + “a”+ “!”.toUpperCase()?

Let’s write the code and see!

First we take a variable and give it the specified value.

let meme = (“b” + “a” + + “a” + “a”+ “!”).toUpperCase();

console.log(meme);

Now let’s think!

We see four operators + . One of them is unary (+ “a”) (if you haven’t guessed yet, it’s the third + ) (because we have + +”a” )

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Who gets executed first? The unary operator, because it’s more important than the binary operators. + “a” returns NaN

Now we have “b”+ “a” + NaN + “a” + “!”

The first binary operator + concatenates character b and character a . Thus, we have “ba” + NaN + “a” + “!”

Now JS tries to convert NaN to string so we have “baNaN” + “a” + “ !”

We actually have two operators +

So first we obtain “baNaNa” + “!”

then we have “baNaNa!”

The toUpperCase function is used to transform all the characters of a string into uppercases

So, we finally have “BANANA!”

The output will be “BANANA!”