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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q31-Q36):

NEW QUESTION # 31
Refer to the following code block:
class Animal{
constructor(name){
this.name = name;
}
makeSound(){
console.log(`${this.name} is making a sound.`)
}
}
class Dog extends Animal{
constructor(name){
super(name)
this.name = name;
}
makeSound(){
console.log(`${this.name} is barking.`)
}
}
let myDog = new Dog('Puppy');
myDog.makeSound();
What is the console output?

A. Puppy is barking

Answer: A

NEW QUESTION # 32
developer is trying to convince management that their team will benefit from using
Node.js for a backend server that they are going to create. The server will be a web server that
handles API requests from a website that the team has already built using HTML, CSS, and
JavaScript.
Which three benefits of Node.js can the developer use to persuade their manager?
Choose 3 answers:

A. Executes server-side JavaScript code to avoid learning a new language.
B. Ensures stability with one major release every few years.
C. Performs a static analysis on code before execution to look for runtime errors.
D. I nstalls with its own package manager to install and manage third-party libraries.
E. User non blocking functionality for performant request handling .

Answer: C,D,E

NEW QUESTION # 33
Considering type coercion, What does the following expression evaluate to?
True + ) + '100 ' + null

A. '4100null'
B. '3100null'
C. 0
D. 1

Answer: A

NEW QUESTION # 34
Given two expressions var1 and var2. What are two valid ways to return the logical AND
of the two expressions and ensure it is data type Boolean ?
Choose 2 answers:

A. var1.toBoolean() && var2toBoolean()
B. Boolean(var1 && var2)
C. var1 && var2
D. Boolean(var1) && Boolean(var2)

Answer: B,D

NEW QUESTION # 35
A developer implements a function that adds a few values.

Which three options can the developer invoke for this function to get a return vale of 10? Choose 3 answers

A. Sum (10) ()
B. Sum (5, 5) ()
C. Sum (5) (5)
D. Sum () (5, 5)
E. Sum () (10)

Answer: C,D,E

NEW QUESTION # 36
......

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Leo West Leo West

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