Salesforce Focus on What’s Important of JavaScript-Developer-I Reliable Practice Questions

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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q79-Q84):

NEW QUESTION # 79
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?

Answer:

Explanation:
Puppy is barking

NEW QUESTION # 80
Refer to the following code that performs a basic mathematical operation on a provided
input:
function calculate(num) {
Return (num +10) / 3;
}
How should line 02 be written to ensure that x evaluates to 6 in the line below?
Let x = calculate (8);

A. Return Number((num +10) /3 );
B. Return Integer(num +10) /3;
C. Return Number(num + 10) / 3;
D. Return (Number (num +10 ) / 3;

Answer: D

NEW QUESTION # 81
Refer to the following code:
function test (val) {
If (val === undefined) {
return 'Undefined values!' ;
}
if (val === null) {
return 'Null value! ';
}
return val;
}
Let x;
test(x);
What is returned by the function call on line 13?

A. 'Undefined values!'
B. Line 13 throws an error.
C. 'Null value!'
D. Undefined

Answer: A

NEW QUESTION # 82
A developer wants to use a module called DataPrettyPrint. This module exports one default functioncalled printDate ().
How can a developer import and use the printDate() function?

Answer: C

NEW QUESTION # 83
What are two unique features of functions defined with a fat arrow as compared to normal function definition?
Choose 2 answers

A. If the function has a single expression in the function body, the expression will be evaluated and implicit returned.
B. The function uses the this from the enclosing scope.
C. The function receives an argument that is always in scope, called parentThis, which is the enclosing lexical scope.
D. The function generated its own this making it useful for separating the function's scope from its enclosing scope.

Answer: C,D

NEW QUESTION # 84
......

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Salesforce Focus on What’s Important of JavaScript-Developer-I Reliable Practice Questions

Unparalleled JavaScript-Developer-I Reliable Practice Questions, Ensure to pass the JavaScript-Developer-I Exam

Salesforce Certified JavaScript Developer I Exam Sample Questions (Q79-Q84):

2025 Valid 100% Free JavaScript-Developer-I – 100% Free Reliable Practice Questions | New Salesforce Certified JavaScript Developer I Exam Test Cost

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