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Unexplained scopes in ES6: Compare Scopes of the var and let Keywords

See original GitHub issue

https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/es6/compare-scopes-of-the-var-and-let-keywords In this lesson, “block scope” is not explained, at least not so clear as what https://www.w3schools.com/js/js_let.asp does.

The sentence

i is not defined because it was not declared in the global scope

is especially confusing because if i is declared with var in the same situation, the console will not return “i is not defined”.

The points are:

What kinds of scope exist?
What scopes can var and let have?

Issue Analytics

State:
Created 3 years ago
Comments:8 (5 by maintainers)

Top GitHub Comments

1reaction

moT01commented, Apr 22, 2020

Any suggestions @GrimPixel?

I think the challenge as a whole could use some simplification. The code examples feel more complicated than they need to be to illustrate the concept. The description is quite long as well. But that’s a whole rewrite of the challenge. I’m not sure it’s worth it.

0reactions

ieahleencommented, Oct 17, 2020

oh, sorry, it seems the version I remember was changed before this then

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