Salesforce-JavaScript-Developer Practice Test
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'
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
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.
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
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 ] );
B. [ ]. Concat (... inArray);
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