"Idiot Check" in JavaScript (.toLowerCase and .toUpperCase)

Question

In my code, "SiAff" won't be the correct answer... I want to use ".toLowerCase" and ".toUpperCase", but I don't know how to do that. Any help would be appreciate

var Que = prompt("What's my name")

if (Que == "Siaff") {
    document.write("Correct!")
}

else {
    document.write("Wrong!")
}

What do you want to achieve? What is the code supposed to do? — Cerbrus, Sep 04 '17 at 11:55
Welcome to SO. Please visit the [help] to see what and how to ask. HINT: Show effort - for example google mdn toLowerCase to read how to use toLowerCase - or this: https://www.google.nl/search?q=how+to+compare+strings+case+insensitive+javascript which [returns the duplicate](https://stackoverflow.com/questions/2140627/javascript-case-insensitive-string-comparison) as one of the first — mplungjan, Sep 04 '17 at 12:00
Looking at the description and code OP only wants capitalized name to be correct.. https://stackoverflow.com/questions/1026069/how-do-i-make-the-first-letter-of-a-string-uppercase-in-javascript — yezzz, Sep 04 '17 at 12:07

prasanth · Accepted Answer · 2017-09-04T12:01:22.080

1

Try like this Que.toLowerCase()

var Que = prompt("What's my name")

if (Que.toLowerCase() === "siaff") {
    document.write("Correct!")
}

else {
    document.write("Wrong!")
}

edited Sep 04 '17 at 12:01

answered Sep 04 '17 at 11:56

prasanth

22,145
4
29
53

`===`, not `==` – Cerbrus Sep 04 '17 at 11:58
2

@Cerbrus: It makes exactly zero difference above. – T.J. Crowder Sep 04 '17 at 11:59
2

Still a good habit. – Cerbrus Sep 04 '17 at 12:00
And flagged by TypeScript – mplungjan Sep 04 '17 at 12:03
1

@mplungjan: `==`, you mean? – Cerbrus Sep 04 '17 at 12:05
1

Also, although not really an issue here. `exactly zero difference` is not strictly true, if performance was an issue. As == has a few extra equality checks to do. But yeah, I'm been pedantic here. :) – Keith Sep 04 '17 at 12:09
Well, OP doesn't care.. even the `In my code, "SiAff" won't be the correct answer...` went out the window – yezzz Sep 04 '17 at 12:34

"Idiot Check" in JavaScript (.toLowerCase and .toUpperCase)

1 Answers1