Adobe Exam AD0-E213 Topic 7 Question 47 Discussion

Actual exam question for Adobe's AD0-E213 exam

Question #: 47
Topic #: 7

[All AD0-E213 Questions]

What does the JavaScript exception "x is not a non-null object" refer to?

AAn object was defined as 'non-null' but the code attempted to set it to null.

BAn object must have been null but it was not.

CAn object was expected but was not provided.

Show Suggested Answer

Suggested Answer: C

This exception indicates that a JavaScript object was expected but was not provided. This can happen when a variable is referenced without being defined, or when a parameter is expected but not provided. For more detailed information, please refer to the Mozilla Developer Network documentation (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Not_non-null_object).

by Magda at Aug 02, 2024, 09:36 AM

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Margurite

6 months ago

Looks like someone's trying to trip us up with this one. I'm gonna go with C and hope for the best. Time to break out the crystal ball!

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Elvera

5 months ago

I'm going with B, it makes more sense to me.

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Alberta

5 months ago

I think it's A, because it says 'non-null' object.

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Talia

6 months ago

I think B makes more sense because the object must have been null but it was not.

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Gladys

6 months ago

This question is a real head-scratcher. I'm going with option A - someone tried to set a 'non-null' object to null. Somebody needs to learn about null checks.

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Haley

6 months ago

Hmm, this one's tricky. I'd say B is the right answer. An object was supposed to be non-null, but it ended up being null. Oops!

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Keneth

6 months ago

I'm guessing option C is the correct answer. An object was expected, but none was provided. Rookie mistake, really.

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Lili

5 months ago

Always important to double check the parameters being passed in to avoid errors like that.

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Brigette

5 months ago

I've made that mistake before, not providing an object when it was expected.

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Kate

5 months ago

Yeah, it makes sense that the error would occur if an object was expected but not provided.

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Willodean

6 months ago

I think you're right, option C seems to be the most logical choice.

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Ciara

7 months ago

But if an object was defined as 'non-null' and set to null, wouldn't that cause the exception?

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Cheryll

7 months ago

Ah, the classic 'x is not a non-null object' error. Clearly, someone needs to brush up on their object handling skills.

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Gaston

6 months ago

Yeah, it's a common mistake to forget to define the object before using it.

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Marylyn

6 months ago

I've seen that error before. It usually means the object was expected but not provided.

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Sharmaine

7 months ago

I disagree, I believe it's C.

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Ciara

7 months ago

I think the answer is A.

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