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Adobe AD0-E213 Exam - Topic 3 Question 60 Discussion

Actual exam question for Adobe's AD0-E213 exam

Question #: 60
Topic #: 3

[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 Shawn at Feb 10, 2025, 04:27 PM

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Lai

7 months ago

Yeah, I've seen this error pop up a lot in my projects!

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Bettye

7 months ago

I thought it meant the object was set to null when it shouldn't have been.

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Audry

7 months ago

Wait, isn't it more about null being unexpected?

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Bobbie

7 months ago

Totally agree, it's a common mistake in JS!

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Royal

7 months ago

It's about expecting an object but getting something else.

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Marguerita

8 months ago

I’m a bit confused. I thought "non-null" meant it should never be null, so maybe it’s option B? But I’m not completely sure.

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Nu

8 months ago

I feel like this is similar to a question I saw where it was about trying to access properties of a null object. Could it be option A?

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Lavelle

8 months ago

I remember something about null objects from practice questions, but I'm not entirely sure if it’s about defining them or just checking their existence.

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Huey

8 months ago

I think the error means that the code expected an object but got something else instead. Maybe it’s option C?

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Louann

8 months ago

I'm a little unsure about this one. The wording of the options is a bit tricky. I'm going to re-read the question and the options carefully before making a decision.

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Marjory

8 months ago

I'm feeling pretty confident about this one. The error message is clearly indicating that an object was expected, but it wasn't provided. So I'm going to go with option C.

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Frederica

8 months ago

Okay, I think I've got it. The error is saying that an object was expected, but it was either null or undefined. So option C seems like the best answer.

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Buck

8 months ago

Hmm, I'm a bit confused by this one. I'm not entirely sure what it means for an object to be "non-null". Does that just mean it has to be defined?

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Kenia

8 months ago

This one seems pretty straightforward. I think the key is understanding that the error message is referring to an object that was expected but not provided.

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Angelo

1 year ago

I think the answer is C. An object was expected but was not provided. Simple enough!

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Carri

1 year ago

I agree, it seems like the answer is A. An object was defined as 'non-null' but the code attempted to set it to null.

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Florinda

1 year ago

I think it refers to an object was defined as 'non-null' but the code attempted to set it to null.

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Odette

1 year ago

I believe it means an object must have been null but it was not.

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Chan

1 year ago

I think the answer is C. An object was expected but was not provided.

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Tawna

1 year ago

I'm not sure, but I think A) An object was defined as 'non-null' but the code attempted to set it to null makes sense too.

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Marcos

1 year ago

I agree with Leonora, because if the code is looking for an object and it's not there, that would cause the exception.

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Leonora

1 year ago

I think the answer is C) An object was expected but was not provided.

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