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The following JavaScript Developer I questions are part of our Salesforce JavaScript Developer I real exam questions full version. There are 230 in our JavaScript Developer I full version. All of our JavaScript Developer I real exam questions can guarantee you success in the first attempt. If you fail JavaScript Developer I exam with our Salesforce JavaScript Developer I real exam questions, you will get full payment fee refund. Want to practice and study full verion of JavaScript Developer I real exam questions? Go now!

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Salesforce JavaScript Developer I Exam Actual Questions

The questions for JavaScript Developer I were last updated on Feb 21,2025 .

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Question#1

Which statement phrases successfully?

A. JSO
B. parse ( ‘ foo ’ );
C. JSO
D. parse ( “ foo ” );
E. JSO
F. parse( “ ‘ foo ’ ” );
G. JSO
H. parse(‘ “ foo ” ’);

Question#2

Which two console logs outputs NaN? Choose 2 answers

A. console.log(10/ Number(‘5’));
B. console.log(parseInt(‘two’));
C. console.log(10/ ‘’five);
D. console.log(10/0);

Question#3

The developer wants to test the array shown:
const arr = Array(5).fill(0)
Which two tests are the most accurate for this array? Choose 2 answers:

A. console.assert( arr.length === 5 );
B. arr.forEach(elem => console.assert(elem === 0)) ;
C. console.assert(arr[0] === 0 && arr[ arr.length] === 0);
D. console.assert (arr.length >0);

Question#4

Which three options show valid methods for creating a fat arrow function? Choose 3 answers

A. x => ( console.log(‘ executed ’) ; )
B. [ ] => ( console.log(‘ executed ’) ;)
C. ( ) => ( console.log(‘ executed ’) ;)
D. X,y,z => ( console.log(‘ executed ’) ;)
E. (x,y,z) => ( console.log(‘ executed ’) ;)

Question#5

Refer to the code below:
Let str = ‘javascript’;
Str[0] = ‘J’;
Str[4] = ’S’;
After changing the string index values, the value of str is ‘javascript’ .
What is the reason for this value:

A. Non-primitive values are mutable.
B. Non-primitive values are immutable.
C. Primitive values are mutable.
D. Primitive values are immutable.

Exam Code: JavaScript Developer IQ & A: 230 Q&AsUpdated:  Feb 21,2025

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