made a calculator on prompt but its not working help | Coding [EN/DE] JavaScript • Python • Java • C++ • C# • SQL • HTML • PHP • Dev • Lua • Programming | Page 1

burnt brook Dec 13, 2023, 7:32 PM

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Thanks for your question :clap:, if someone gives you an answer it would be great if you thanked them with a :white_check_mark: in response. This response will earn you both points for special roles on this server.

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Bro I want to kms

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No offense

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Sorry

mighty briar Dec 13, 2023, 7:38 PM

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it alr lol

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it jus confuses me

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need time to learn but im stuck rn

burnt brook Dec 13, 2023, 7:39 PM

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mighty briar it alr lol

You have to use num1 and num2 not "num1" and "num2"

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"num1" is a string num1 is a variable that contains something

mighty briar Dec 13, 2023, 7:40 PM

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i had em w out strings

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still gave the same error

burnt brook Dec 13, 2023, 7:40 PM

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mighty briar still gave the same error

Oh wait internet bad I cannot see error but do what I said anyway

mighty briar Dec 13, 2023, 7:41 PM

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did

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still the same lol

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burnt brook Dec 13, 2023, 7:42 PM

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mighty briar

Oh there is no sush a thing as isNan

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You have to do num1 == NaN I believe

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@burnt brook _0bits's Question:

how to check if something is NaN in js

To check if something is NaN (Not-a-Number) in JavaScript, you can use the isNaN() function or the Number.isNaN() function. Here's how you can use each approach:

Using isNaN():

const value = 10 / "abc"; // Performing a mathematical operation that results in NaN

if (isNaN(value)) {
  console.log("The value is NaN");
} else {
  console.log("The value is not NaN");
}

Output:

The value is NaN

Using Number.isNaN():

const value = 10 / "abc"; // Performing a mathematical operation that results in NaN

if (Number.isNaN(value)) {
  console.log("The value is NaN");
} else {
  console.log("The value is not NaN");
}

Output:

The value is NaN

Both isNaN() and Number.isNaN() functions return true if the provided value is NaN; otherwise, they return false. However, note that isNaN() has some quirks, as it coerces non-numeric values to numbers before checking for NaN. On the other hand, Number.isNaN() performs a strict comparison and only considers values of the NaN type as NaN.

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@burnt brook _0bits's Question:

no nodejs

In Node.js, you can also use the same isNaN() and Number.isNaN() functions to check if something is NaN. Here's an example:

Using isNaN():

const value = 10 / "abc"; // Performing a mathematical operation that results in NaN

if (isNaN(value)) {
  console.log("The value is NaN");
} else {
  console.log("The value is not NaN");
}

Output:

The value is NaN

Using Number.isNaN():

const value = 10 / "abc"; // Performing a mathematical operation that results in NaN

if (Number.isNaN(value)) {
  console.log("The value is NaN");
} else {
  console.log("The value is not NaN");
}

Output:

The value is NaN

Both isNaN() and Number.isNaN() functions work similarly in Node.js as they do in JavaScript. They will return true if the provided value is NaN; otherwise, they will return false. Again, note that isNaN() coerces non-numeric values to numbers before checking for NaN, while Number.isNaN() performs a strict comparison and only considers values of the NaN type as NaN.

mighty briar Dec 13, 2023, 7:44 PM

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burnt brook You have to do num1 == NaN I believe

oh

burnt brook Dec 13, 2023, 7:44 PM

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mighty briar oh

Oh it's isNaN not isNan

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N ≠ n

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@burnt brook _0bits's Question:

does == NaN work here

In JavaScript, using the == operator to check if a value is NaN is not reliable. The == operator performs type coercion, which can lead to unexpected results.

Here's an example to illustrate the behavior:

const value = 10 / "abc";
console.log(value == NaN); // Output: false

Even though value is NaN, the expression value == NaN evaluates to false. This is because NaN is a special value in JavaScript, and it does not equal itself.

To properly check if a value is NaN, you should use the isNaN() or Number.isNaN() functions.

const value = 10 / "abc";
console.log(isNaN(value)); // Output: true
console.log(Number.isNaN(value)); // Output: true

Both isNaN() and Number.isNaN() will correctly determine that value is NaN.

mighty briar Dec 13, 2023, 7:45 PM

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wait so

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i change

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if (isNan (num1) || isNan(num2))

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?

burnt brook Dec 13, 2023, 7:46 PM

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mighty briar i change

isNaN

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Yes

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N ≠ n "num1" ≠ num1

mighty briar Dec 13, 2023, 7:46 PM

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a ok

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UHHHHHHHHHHHHH

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wait so

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ion get it

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i jus

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change isnan (num1) to that/

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?

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or just isnan

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god i alr hate js

burnt brook Dec 13, 2023, 7:54 PM

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mighty briar god i alr hate js

Bro this is common sense capital ≠ small

mighty briar Dec 13, 2023, 7:54 PM

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ik that but

burnt brook Dec 13, 2023, 7:54 PM

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This is in every language btw

mighty briar Dec 13, 2023, 7:54 PM

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the code

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it shows errors

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:d

burnt brook Dec 13, 2023, 7:54 PM

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mighty briar it shows errors

It's easy dude just do isNaN(num1)

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|| isNaN(num2)

mighty briar Dec 13, 2023, 7:56 PM

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OH WAIT

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oh nah

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bro how did i mess that up

burnt brook Dec 13, 2023, 7:56 PM

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mighty briar oh nah

What problem

mighty briar Dec 13, 2023, 7:56 PM

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burnt brook || isNaN(num2)

jus realized what was the problem when u said this

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thanks

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sm

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appreciate it

burnt brook Dec 13, 2023, 7:57 PM

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mighty briar jus realized what was the problem when u said this

Thanks god you ain't another troll

burnt brook Dec 13, 2023, 7:58 PM

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mighty briar jus realized what was the problem when u said this

OH WAJT REACT WITH ✅

mighty briar Dec 13, 2023, 7:58 PM

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who tf trolls on a programming server

mighty briar Dec 13, 2023, 7:58 PM

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burnt brook OH WAJT REACT WITH ✅

done

burnt brook Dec 13, 2023, 7:58 PM

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mighty briar who tf trolls on a programming server

or maybe they are just too stupid but I refuse to believe this when you said you still got error I tough you did isnan or something

mighty briar Dec 13, 2023, 7:59 PM

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nope

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i got an error

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bc i forgot ;

#made a calculator on prompt but its not working help