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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q97-Q102):

NEW QUESTION # 97
Teams at Universal Containers (UC) work on multiple JavaScript projects at the same time.
UC is thinking about reusability and how each team can benefit from the work of others.
Going open-source or public is not an option at this time.
Which option is available to UC with npm?

A. Private packages can be scored, and scopes can be associated to a private
registries.
B. Private registries are not supported by npm, but packages can be installed via URL.
C. Private packages are not supported, but they can use another package manager like
yarn.
D. Private registries are not supported by npm, but packages can be installed via git.

Answer: A

NEW QUESTION # 98
Which statement accurately describes an aspect of promises?

A. .then() manipulates and returns the original promise.
B. In a.then() function, returning results is not necessary since callbacks will catch the result of a previous promise.
C. .then() cannot be added after a catch.
D. Arguments for the callback function passed to .then() are optional.

Answer: D

NEW QUESTION # 99
A developer has two ways to write a function:
Option A:
function Monster() {
This.growl = () => {
Console.log ("Grr!");
}
}
Option B:
function Monster() {};
Monster.prototype.growl =() => {
console.log("Grr!");
}
After deciding on an option, the developer creates 1000 monster objects.
How many growl methods are created with Option A Option B?

A. 1000 growl method is created for Option A. 1 growl methods are created for Option B.
B. 1 growl method is created for Option A. 1000 growl methods are created for Option B.
C. 1000 growl methods are created regardless of which option is used.
D. 1 growl method is created regardless of which option is used.

Answer: A

NEW QUESTION # 100
A developer is wondering whether to use, Promise.then or Promise.catch, especially when a Promise throws an error?
Which two promises are rejected?
Which 2 are correct?

A. Promise.reject('cool error here').catch(error => console.error(error));
B. New Promise((resolve, reject) => (throw 'cool error here'}).catch(error => console.error(error)) ;
C. New Promise(() => (throw 'cool error here'}).then(null, error => console.error(error)));
D. Promise.reject('cool error here').then(error => console.error(error));

Answer: A,B

NEW QUESTION # 101
Refer to the code below:

Which two statements correctly execute the runparallel () function?
Choose 2 answers

A. runParralel () . then (data );
B. runParallel () , then (function ) (date) { } 0;
C. Async runParalled (). Then (data) :
D. runParallel () , done (function ( data)(return data; }};

Answer: B,C

NEW QUESTION # 102
......

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