Quiz: JavaScript

Hello, coders! 💻

Quick quiz for you: what is the output of the code below and why?

const gender = 'M';
console.log("Hello " + gender === 'M' ? "Sir" : "Ma'am")

Comments

[Julien Dephix]

Hey Luke. Thanks for your comment. As you said there was no bad intention, it was just a code example. I'll be more careful next time.

Above code would be better with template literals indeed but the point of the quiz was to show that codes doesn't always work like you think it will. I think I saw it when doing code review and thought it was worth sharing. :)

[Frank Wisniewski]

"Hello " + gender != 'M'
The output is "Ma' am"

[Julien Dephix]

He shoots, he scores! 👌

One must know operator precedence to avoid gotchas like this one.

[Frank Wisniewski]

Tip:
Use Template strings

[Julien Dephix]

Yes of course, but the point was to question people’s knowledge.

console.log(`Hello ${gender === 'M' ? "Sir" : “Ma'am"}`)

[Keff]

Haahah nice one! I remembered when I encountered this for the first time, took me a bit to wrap my head around it xD

[Julien Dephix]

Ha ha I can relate :)