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JAVASCRIPT-DEVELOPER-I Exam Questions & Answers

Exam Code: JAVASCRIPT-DEVELOPER-I

Exam Name: Salesforce Certified JavaScript Developer I

Updated: Mar 19, 2024

Q&As: 223

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Practice These Free Questions and Answers to Pass the Salesforce Developer Exam

Questions 1

A developer is debugging a web server that uses Node.js The server hits a runtime error every third request to an important endpoint on the web server.

The developer added a break point to the start script, that is at index.js at he root of the server's source code. The developer wants to make use of chrome DevTools to debug.

Which command can be run to access DevTools and make sure the breakdown is hit?

A. node -i index.js

B. Node --inspect-brk index.js

C. Node inspect index.js

D. Node --inspect index.js

Show Answer
Questions 2

Refer to thecode below:

let sayHello = () => {

console.log (`Hello, world!');

};

Which code executes sayHello once, two minutes from now?

A. setTimeout(sayHello, 12000);

B. setInterval(sayHello, 12000);

C. setTimeout(sayHello(), 12000);

D. delay(sayHello, 12000);

Show Answer
Questions 3

Which statement parses successfully?

A. JSON. parse (""foo"');

B. JSON.parse (""foo'");

C. JSON.parse ("foo");

D. JSON.parse ("foo");

Show Answer
Questions 4

A developer wants to iterate through an array of objects and count the objects and count the objects whose property value, name, starts with the letter N. Const arrObj = [{"name" : "Zach"} , {"name" : "Kate"},{"name" : "Alise"},{"name" : "Bob"},

{"name" : "Natham"},{"name" : "nathaniel"}

Refer to the code snippet below:

01 arrObj.reduce(( acc, curr) => {

02 //missing line 02

02 //missing line 03

04 ).0);

Which missing lines 02 and 03 return the correct count?

A. Const sum = curr.startsWith(`N') ? 1: 0; Return acc +sum

B. Const sum = curr.name.startsWith(`N') ? 1: 0; Return acc +sum

C. Const sum = curr.startsWIth(`N') ? 1: 0; Return curr+ sum

D. Constsum = curr.name.startsWIth(`N') ? 1: 0; Return curr+ sum

Show Answer
Questions 5

Refer to the code:

Given the code above, which three properties are set for pet1? Choose 3 answers

A. name

B. owner

C. type

D. canTalk

E. size

Show Answer

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