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Leonardo Montini for This is Learning

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10 more Javascript Challenges!

Do you know Javascript? After the success of the previous video, I've decided to make a second one with 10 more challenges to test your knowledge of the language.

These are 4 out of the 10 challenges you'll find in the video:

The ++ operator is really handy and you can put it either before or after the variable. But do you know the difference between the two?

let value = 3;
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You can use _ and the letter e in numbers and they're still valid!

const THE_ANSWER = 1_2 + 3e1;

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Isn't the output here supposed to be 7 on both cases? Actually, none of them is 7!

const x = "5";

console.log(1 + 1 + x);
console.log(x + 1 + 1);
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Can you spot any unintended side effect here?

let me = { name: "Leonardo", socials: { twitter: "@balastrong" } };

let luca = { }; = "Luca";
luca.socials.twitter = "@puppo92";

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If you're curious about the answers, you can find them in the video below. I hope you enjoy it!

In the video above, I go through all challenges and show the answer, but I also recorded a slower version where I actually explain them in more detail. If you're curious and want to learn more, you can find it here:

Let me know how many did you got right! :D

Thanks for reading this article, I hope you found it interesting!

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Top comments (3)

diegogirao profile image
Diego Ramiro

Great challenges and video 👏

balastrong profile image
Leonardo Montini

Thank you! Which video version you liked the most? The short one without explanations or the longer one with?

diegogirao profile image
Diego Ramiro

I think the last video with the explanation is better because, in the beginning, a visual response or effect is more effective than just an imagination. But both were great, Congrats again !!! 👏 🚀 💻