Free Javascript-Developer-I Exam Questions - Easiest Way for Success

Prepare for the Salesforce Javascript-Developer-I exam questions with our authentic preparation materials, including free Javascript-Developer-I practice exam questions and answers. TheExamsLab provides all the support you need to succeed in the Salesforce Certified JavaScript Developer I (SP24) Javascript-Developer-I exam. This dedication to student success is why we have the most satisfied Javascript-Developer-I certification exam candidates worldwide.

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Total 217 Questions | Updated On: Sep 11, 2024

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Question 1

Given the code below:

const copy = JSON.stringify([ new String(' false '), new Bollean( false ), undefined ]);

What is the value of copy?

A : -- [ \''false\'' , { } ]--

B : -- [ false, { } ]--

C : -- [ \''false\'' , false, undefined ]--

D : -- [ \''false\'' ,false, null ]--

Answer: D

Question 2

Refer to the following code:

class Vehicle{

constructor(plate){

this.plate = plate;

}

class Truck extends Vehicle{

constructor(plate, weight){

//Missing code

this.weight = weight;

}

displayWeight(){

console.log(`The truck ${this.plate} has a weight of ${this.weight}lb.`);

}

}let myTruck = new Truck('123Ab',5000);

myTruck.displayWeight();

Which statement should be added to missing code for the code to display 'The truck 123AB has a

weight of 5000lb.

A : super(plate)

B : super.plate = plate

C : Vehicle.plate = plate

D : this.plate = plate

Answer: A

Question 3

Why would a developer specify a package.jason as a developed forge instead of a dependency ?

A : It is required by the application in production.

B : It is only needed for local development and testing.

C : Other required packages depend on it for development.

D : It should be bundled when the package is published.

Answer: B

Question 4

Refer to the expression below:

Let x = ('1' + 2) == (6 * 2);

How should this expression be modified to ensure that evaluates to false?

A : Let x = ('1' + ' 2') == ( 6 * 2);

B : Let x = ('1' + 2) == ( 6 * 2);

C : Let x = (1 + 2) == ( '6' / 2);

D : Let x = (1 + 2 ) == ( 6 / 2);

Answer: B

Question 5

Considering type coercion, what does the following expression evaluate to?

True + '13' + NaN

A : ' 113Nan '

B : 14

C : ' true13 '

D : ' true13NaN '

Answer: D

Page: 1 / 44

Total 217 Questions | Updated On: Sep 11, 2024

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