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Salesforce Certified JavaScript Developer I Exam

Certification Provider: Salesforce
Exam Name: Salesforce Certified JavaScript Developer I
Number of questions in our database: 215
Exam Version: Jul. 26, 2022
Exam Official Topics:
  • Topic 1: Given a scenario and requirements, distinguish which Node.Js Package Management solution is the most fitting/ Given a business requirement, utilize strings, numbers, and dates effectively
  • Topic 2: Given a JavaScript module, give examples of how to use the module/ Given a scenario, write code to create variables and initialize them correctly
  • Topic 3: Given a scenario and requirements, infer which Node.js CLI command is a good solution/ Given a list of data, demonstrate data manipulation with arrays
  • Topic 4: Given a business requirement, utilize Events, event handlers and propagation/ Given a specific scenario, distinguish truthy or falsey evaluations
  • Topic 5: Demonstrate awareness of type coercion and its effects/ Given a block of code, analyze the variable scope and the execution flow
  • Topic 6: Given a JavaScript decorator, give examples of how to use the decorator/ Use event loop and event monitor or determine loop outcomes
  • Topic 7: Apply fundamentals of class implementation to solve the business requirement/ Know the core Node.js modules and given requirements, infer which Node.js library/framework is a good solution
  • Topic 8: Apply fundamentals of object implementation to solve the business requirement/ Utilize the Browser Dev Tools to investigate code behavior
  • Topic 9: Given a scenario and requirements, infer which Node.js implementation is a good solution/ Given a JSON response, demonstrate how to operate the JSON object

Free Salesforce Salesforce Certified JavaScript Developer I Exam Actual Questions

The questions for Salesforce Certified JavaScript Developer I were last updated On Jul. 26, 2022

Question #1

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?

Reveal Solution Hide Solution
Correct Answer: D

Question #2

Refer to the code below

let inArray = [[1,2],[3,4,5]];

which two statements results in the array [1,2,3,4,5]?

choose 2 answer

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Correct Answer: A, D

Question #3

A developer has two ways to write a function:

Option A:

function Monster(){

this.growl = ()=>{

console.log('Grr!');

}

}

Option B:

function Monster(){};

Monster.prototype.growl = ()=>{

console.log('Grr!');

}

After deciding on an option, the developer creates 1000 monster objects.

How many growl methods are created with Option A and Option B?

Reveal Solution Hide Solution
Correct Answer: B

Question #4

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.

Reveal Solution Hide Solution
Correct Answer: A

Question #5

Refer to the code below:

const car = {

price:100,

getPrice:function(){

return this.price;

}

};

const customCar = Object.create(car);

customCar.price = 70;

delete customCar.price;const result = customCar.getPrice();

What is the value of result after the code executes?

Reveal Solution Hide Solution
Correct Answer: A


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