Exam PL-400 topic 5 question 27 discussion

Actual exam question from Microsoft's PL-400

Question #: 27
Topic #: 5

HOTSPOT -
A model-driven app has the following JavaScript code. The code is attached to the OnChange event of the Phone (telephone1) field on the Account entity.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:

Show Suggested Answer

Suggested Answer:

by twin at June 4, 2021, 9:05 a.m.

Comments

Submit Cancel

Iker

Highly Voted 3 years, 6 months ago

1) YES. 2) NO. When the primarycontactid field is not populated, the script finished with an error. This occurs because the value of "var telephone = formContext.getAttribute("telephone1")" is equals to Null. 3) NO. When we removes the value of "telephone1" field, "if(!telephone)" condition becames true.

upvoted 54 times

Violoncello

2 years, 5 months ago

2: This is YES. I spent hours troubleshooting and verifying exact behavior. "telephone1" is a lookup. formContext.getAttribute("telephone1") is never null. However, the .getValue() returns null if there's no phone number.

upvoted 1 times

No_Doubt

2 years, 1 month ago

2 is no, since a JS error will be thrown before entering the call of the API

upvoted 1 times

...

franekfranek

3 years, 6 months ago

2. I think then(onSuccess, onFailure) so on failure the massage alert is displayed ???

upvoted 5 times

rhess

3 years ago

#2 is null because the code will fail looking for index 0 on a null value.

upvoted 4 times

...

MarkusH87

3 years, 4 months ago

I think its, Y N N too. As there would be a null execption before entering the callback logic of the update method.

upvoted 6 times

...

Violoncello

2 years, 5 months ago

On 2nd thought, the question is about contact, not telephone. The contact is null. So contact[0].id causes exception.

upvoted 3 times

...

twin

Highly Voted 3 years, 7 months ago

I have tried: Yes, No, No

upvoted 16 times

...

Juan0414

Most Recent 3 months, 4 weeks ago

1. Yes (Follow the script logic) 2. No (If primarycontactid is null then contact[0].id will fail, so the "updateRecord" is not executed, neither its errorCallback) 3. No (If telephone1 is null, then the script stops with return)

upvoted 1 times

...