JavaScript-Developer-I Practice Questions

Given the following code, what is the value of x?

let x = ‘15' + (10 * 2);

A developer wants to leverage a module to print a price in pretty format, and has imported a method as shown below:

Import printPrice from ‘/path/PricePrettyPrint.js’;

Based on the code, what must be true about the printPrice function of the PricePrettyPrint module for this import to work ?

A developer tries to retrieve all cookies, then sets a certain key value pair in the cookie. These statements are used:

What is the behavior?

Refer the following code

what is the value of array after code executes?

A developer wrote a fizzbuzz function that when passed in a number, returns the

following:

● ‘Fizz’ if the number is divisible by 3.

● ‘Buzz’ if the number is divisible by 5.

● ‘Fizzbuzz’ if the number is divisible by both 3 and 5.

● Empty string if the number is divisible by neither 3 or 5.

Which two test cases will properly test scenarios for the fizzbuzz function?

Choose 2 answers

A developer has the following array of student test grades:

Let arr = [ 7, 8, 5, 8, 9 ];

The Teacher wants to double each score and then see an array of the students

who scored more than 15 points.

How should the developer implement the request?

Refer to the string below:

const str = 'Salesforce';

Which two statements result in the word 'Sales'?

Choose 2 answers

At Universal Containers, every team has its own way of copying JavaScript objects. The code snippet shows an Implementation from one team:

What is the output of the code execution?

What are two unique features of functions defined with a fat arrow as compared to normal function definition?

Choose 2 answers

Universal Containers recently launched its new landing page to host a crowd-funding

campaign. The page uses an external library to display some third-party ads. Once the page is

fully loaded, it creates more than 50 new HTML items placed randomly inside the DOM, like the

one in the code below:

All the elements includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.