Cisco
CompTIA
ISC
EC-Council
EXIN
Fortinet
ITIL
Juniper
Microsoft
VMware
Avaya
SAP
Google
NVIDIA
Salesforce
Amazon
Palo Alto Networks
ISC2
Splunk
ServiceNow
All Vendors
  2. Home
  3. Exams
  4. Salesforce
  5. Certified JavaScript Developer I

Salesforce Certified JavaScript Developer I Exam Questions
Salesforce Certified JavaScript Developer I (Page 2 )

Updated On: 9-Mar-2026
Page 2 of 46
PDF with 224 Questions

Refer to the code below:
01 const exec = (item, delay) =>{
02 newPromise(resolve => setTimeout( () => resolve(item), delay)), 03 async function runParallel() {
04 Const (result1, result2, result3) = await Promise.all{ 05 [exec (`x', `100') , exec(`y', 500), exec(`z', `100')] 06 );
07 return `parallel is done: $(result1)$(result2)$(result3)`; 08 }
}
}
Which two statements correctly execute the runParallel () function? Choose 2 answers

  1. Async runParallel () .then(data);
  2. runParallel ( ). done(function(data){return data;});
  3. runParallel () .then(data);
  4. runParallel () .then(function(data)return data

Answer(s): B,D



A developer needs to test this function:
01const sum3 = (arr) => (
02if (!arr.length) return 0,
03if (arr.length === 1) return arr[0],
04if (arr.length === 2) return arr[0]+ arr[1],
05 return arr[0] + arr[1] + arr[2],
06 );
Which two assert statements are valid tests for the function? Choose 2 answers

  1. console.assert(sum3(1, `2')) == 12);
  2. console.assert(sum3(0)) == 0);
  3. console.assert(sum3(-3, 2 )) == -1);
  4. console.assert(sum3(`hello', 2, 3, 4)) === NaN);

Answer(s): A,C



Which statement phrases successfully?

  1. JSON.parse ( ` foo ' );
  2. JSON.parse ( " foo " );
  3. JSON.parse( " ` foo ' " );
  4. JSON.parse(` " foo " ');

Answer(s): D



Refer to the code below:
01 let car1 = new promise((_, reject) =>
02 setTimeout(reject, 2000, "Car 1 crashed in"));
03 let car2 = new Promise(resolve => setTimeout(resolve, 1500, "Car 2 completed"));
04 let car3 = new Promise(resolve => setTimeout (resolve, 3000, "Car 3 Completed"));
05 Promise.race([car1, car2, car3])
06 .then(value => (
07 let result = $(value) the race. `;
08 ))
09 .catch( arr => (
10 console.log("Race is cancelled.", err);
11 ));
What is the value of result when Promise.race executes?

  1. Car 3 completed the race.
  2. Car 1 crashed in the race.
  3. Car 2 completed the race.
  4. Race is cancelled.

Answer(s): C



Refer to the code below:
for(let number =2 ; number <= 5 ; number += 1 ) {
// insert code statement here
}
Thedeveloper needs to insert a code statement in the location shown. The code statement has these requirements:
1. Does require an import
2. Logs an error when the boolean statement evaluates to false
3. Works in both the browser and Node.js
Which meet the requirements?

  1. assert (number % 2 === 0);
  2. console.error(number % 2 === 0);
  3. console.debug(number % 2 === 0);
  4. console.assert(number % 2 === 0);

Answer(s): D



Viewing page 2 of 46
Viewing questions 6 - 10 out of 224 questions



Post your Comments and Discuss Salesforce Certified JavaScript Developer I exam dumps with other Community members:

Certified JavaScript Developer I Exam Discussions & Posts

AI Tutor