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 JavaScript-Developer-I Dumps with Practice Exam Questions Answers

Questions: 171 questions

Last Update: Jan 17, 2022

Salesforce Certification Exam JavaScript-Developer-I has been designed to measure your skills in handling the technical tasks mentioned in the certification syllabus

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JavaScript-Developer-I Questions and Answers

Question # 1

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?


Private packages can be scored, and scopes can be associated to a private



Private registries are not supported by npm, but packages can be installed via URL.


Private packages are not supported, but they can use another package manager like



Private registries are not supported by npm, but packages can be installed via git.

Question # 2

A developer is required to write a function that calculates the sum of elements in an

array but is getting undefined every time the code is executed. The developer needs to find

what is missing in the code below.

Const sumFunction = arr => {

Return arr.reduce((result, current) => {


Result += current;


), 10);


Which option makes the code work as expected?


Replace line 02 with return result, current) => (


Replace line 04 with result = result +current;


Replace line 03 with if(arr.length == 0 ) ( return 0; )


Replace line 05 with return result;

Question # 3

Why would a developer specify a package.jason as a developed forge instead of a dependency ?


It is required by the application in production.


It is only needed for local development and testing.


Other required packages depend on it for development.


It should be bundled when the package is published.

Question # 4

Given the following code:

document.body.addEventListener(‘ click ’, (event) => {


console.log(‘button clicked!’);



Which replacement for the conditional statement on line 02 allows a developer to

correctly determine that a button on page is clicked?




e.nodeTarget ==this

C. == ‘BUTTON’



Question # 5

Which option is a core Node,js module?









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