Why use eval in Javascript challenges yet it's not recommended to be used?

Question

In Javascript challenges have noticed the use of eval function n yet it's not recommended. This is bad for learners as they will resort to using the function.

Answer 1

why is using eval so bad?
eval is a very powerful function. There are times where it's perfectly appropriate.
The problem is that no tutorial really shows how and when to use it.

Answer 2

well, I've not played JS in quite some time and I don't know the quizzes you are talking about, but sometimes quizzes in general show bad practices in order to demonstrate why they are bad... I agree with Kamil - eval is powerful, but one thing you should never do with it is to run it with user's input, without checking what the input holds 😉

Answer 3

@Nikolay just like python's eval()

Answer 4

https://www.sololearn.com/discuss/428351/?ref=app