Salesforce Certified JavaScript Developer (JS-Dev-101)
Last Update Dec 10, 2025
Total Questions : 219
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A developer wants to create an object from a function in the browser using the code
below:
Function Monster() { this.name = ‘hello’ };
Const z = Monster();
What happens due to lack of the new keyword on line 02?
Given the JavaScript below:
01 function filterDOM (searchString) {
02 const parsedSearchString = searchString && searchString.toLowerCase() ;
03 document.quesrySelectorAll(‘ .account’ ) . forEach(account => (
04 const accountName = account.innerHTML.toLOwerCase();
05 account. Style.display = accountName.includes(parsedSearchString) ? /*Insert
code*/;
06 )};
07 }
Which code should replace the placeholder comment on line 05 to hide accounts that do
not match the search string?
A developer creates an object where its properties should be immutable and prevent
properties from being added or modified.
Which method should be used to execute this business requirement ?
Refer to the code snippet below:
Let array = [1, 2, 3, 4, 4, 5, 4, 4];
For (let i =0; i < array.length; i++)
if (array[i] === 4) {
array.splice(i, 1);
}
}
What is the value of array after the code executes?
Options:
A.
[1, 2, 3, 4, 5, 4, 4]
B.
[1, 2, 3, 4, 4, 5, 4]
C.
[1, 2, 3, 5]
D.
[1, 2, 3, 4, 5, 4]
TESTED 10 Dec 2025
