2025 100% Free JavaScript-Developer-I–Updated 100% Free Reliable Exam Questions | Real JavaScript-Developer-I Dumps Free

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q32-Q37):

NEW QUESTION # 32
Refer to the code below:
let car1 = new Promise((_ ,reject)=> setTimeout(reject,2000,"Car1 crashed in")); let car2 = new Promise(resolve => setTimeout(resolve,1500,"Car2 completed")); let car3 = new Promise(resolve => setTimeout(resolve,3000,"Car3 completed")); Promise.race([car1,car2,car3])
.then(value=>{
let result = `${value} the race.`;
}).catch(err=>{
console.log('Race is cancelled.',err);
});
What is the value of result when promise.race execues?

A. Car2 completed the race.

Answer: A

NEW QUESTION # 33
Refer to code below:
console.log(0);
setTimeout(() => (
console.log(1);
});
console.log(2);
setTimeout(() => {
console.log(3);
), 0);
console.log(4);
In which sequence will the numbers be logged?

A. 0
B. 02431
C. 01234
D. 02413

Answer: B

NEW QUESTION # 34
Refer to the code below:
Let inArray =[ [ 1, 2 ] , [ 3, 4, 5 ] ];
Which two statements result in the array [1, 2, 3, 4, 5] ?
Choose 2 answers

A. [ ]. Concat.apply ([ ], inArray);
B. [ ]. concat.apply(inArray, [ ]);
C. [ ]. concat ( [ ....inArray ] );
D. [ ]. Concat (... inArray);

Answer: A,D

NEW QUESTION # 35
Refer to the code below:
const event = new CustomEvent(
//Missing Code
);
obj.dispatchEvent(event);
A developer needs to dispatch a custom event called update to send information about recordId.
Which two options could a developer insert at the placeholder in line 02 to achieve this?
Choose 2 answers

A. { type : 'update', recordId : '123abc' }
B. 'Update' , '123abc'
C. 'Update' , (
recordId : '123abc'
(
D. 'Update' , {
Details : {
recordId : '123abc'

Answer: C,D

Explanation:
}
}

NEW QUESTION # 36
Which function should a developer use to repeatedly execute code at a fixed interval ?

A. setInteria
B. setTimeout
C. setPeriod
D. setIntervel

Answer: D

NEW QUESTION # 37
......

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2025 100% Free JavaScript-Developer-I–Updated 100% Free Reliable Exam Questions | Real JavaScript-Developer-I Dumps Free

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q32-Q37):

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