Salesforce-JavaScript-Developer Practice Test

Salesforce Spring 25 Release -
Updated On 1-Jan-2026

221 Questions

Given the JavaScript below:

Which code should replace the placeholder comment on line 05 to highlight accounts that match the search string'

A. 'yellow' : null

B. null : 'yellow’

C. 'none1 : "yellow’

D. 'yellow : 'none'

D.   'yellow : 'none'

Refer to the code below

Considering that JavaScript is single-threaded, what is the output of line 08 after the code executes?

A. 10

B. 11

C. 12

D. 13

B.   11

A developer wants to create an object from a function in the browser using the code below. 

What happens due to the lack of the mm keyword on line 02?

A. window.name is assigned to 'hello' and the variable = remains undefined.

B. window.m Is assigned the correct object.

C. The m variable is assigned the correct object but this.name remains undefined.

D. The m variable is assigned the correct object.

A.   window.name is assigned to 'hello' and the variable = remains undefined.

Refer to the code below:

What is the value of result after line 10 executes?

A. Error: myFather.job is not a function

B. John Developer

C. undefined Developer

D. John undefined

B.   John Developer

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 (... inArray);

C. [ ]. concat.apply(inArray, [ ]);

D. [ ]. concat ( [ ….inArray ] );

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

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