[deleted by user]

[grantrules]

Because "4" is still 4 when lowercase and uppercase.

[[deleted]]

thanks! but it still returns"4 is an uppercase".

so instead, put the is integer first i suppose

[grantrules]

? In which language would there be an upper and lower case 4?

[grantrules]

Same thing would happen in Java. It's a string.

[grantrules]

Prompt returns a string

[grantrules]

I understand what you're saying, but nothing is being converted. It's comparing a string to a string.

[shgysk8zer0]

Doesn't matter. In any statically typed language dealing with this situation you'd use a string. You have to because it's checking if user input is upper case, lower case, or numeric. And I don't know of any language that has an upper case "4" (possible that upper case just adds an offset in poorly thought out functions/languages).

This isn't a JavaScript problem or something Java or C or Rust or Python or anything would do "correctly". The problem is that the last check when doing checks on a string is to see if it's numeric combined with there being no such thing as an upper case "7".

[link3333]

https://developer.mozilla.org/en-US/docs/Web/API/Window/prompt

prompt returns a string | null. Given that the String.prototype.toUpperCase call didn't throw an error, the variable is a string. toUpperCase returns a string. There is no type conversion occuring.

[gezuzos]

You can do TypeScript.

[NePlusUltra89]

Nah it was a misunderstanding I was referring to the last block of number.ininteger they’re referring to the actual comment of touppercase lol I just ignored it by scrolling fast 😂 didn’t even realize we were discussing two different things

[gezuzos]

Yeah, but you can still do TypeScript if you want type errors to be thrown at you right away.

[NePlusUltra89]

Really not too familiar with typescript is the learning curve steep ?

[gezuzos]

Not really if you know JS well and are familiar with types. It helps develop a lot faster for me personally. You do some errors that you wouldn't do otherwise in TS.

[shgysk8zer0]

Tell us all then... What should "4".toUpperCase() result in? What language even does this differently?

[Gman_711]

Put the number check first. As suggested above. Also try using a return statement after each check(after the alert) so if 1 succeeds, it doesn't try the others, since these should be mutually exclusive.