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Adobe Exam AD0-E213 Topic 9 Question 39 Discussion

Actual exam question for Adobe's AD0-E213 exam
Question #: 39
Topic #: 9
[All AD0-E213 Questions]

When may the JavaScript exception 'TypeError: "x" is not a function' occur?

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Suggested Answer: C

The JavaScript exception 'TypeError: 'x' is not a function' occurs when the type of the value returned by function V does not match its declared type. For example, if a function is declared to return an integer but returns a string instead, this exception will occur. This can happen when incorrect data types are used or when the function is called with the wrong number of arguments. Reference: https://www.adobe.com/content/dam/acom/en/devnet/analytics/analytics-developer-professional-study-guide.pdf


by Frederic at May 01, 2024, 04:33 AM

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Malcom
5 months ago
Yeah, I feel A is the most plausible. Defining a variable with the same name as a function can definitely cause issues.
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Magda
6 months ago
Agreed, it's more likely A. Type mismatch would likely raise a different kind of error.
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Oliva
6 months ago
No, C doesn't make sense here. TypeError deals with not recognizing something as a function.
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Billy
6 months ago
But what about option C? Wouldn't that make sense too if the return type is wrong?
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Alline
6 months ago
Hmm, could be. Because if a variable has the same name as a function, it could cause confusion.
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Malcom
6 months ago
I think the 'TypeError: "x" is not a function' might happen when option A occurs.
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