Salesforce Certified JavaScript Developer I Practice Test - Questions Answers, Page 21

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.`)

}}l

et myDog = new Dog('Puppy');

myDog.makeSound();

What is the console output?

Given the HTML below:

Which statement adds the priority-account css class to the Applied Shipping row?

Refer to the following code:

Refer to the HTML below:

Which JavaScript statement results in changing " The Lion."?

Refer to the code below:

Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a specific element, myElement on the page had been clicked?

Given the following code:

let x = null;

console.log(typeof x);

What is the output?

Refer to the code below:

let car1 = new Promise((_ ,reject)=> setTimeout(reject,2000,"Car1 crashed in"));

let car2 = new Promise(resolve => setTimeout(resolve,1500,"Car2 completed"));

let car3 = new Promise(resolve => setTimeout(resolve,3000,"Car3 completed"));

Promise.race([car1,car2,car3])

.then(value=>{

let result = `${value} the race.`;

}).catch(err=>{

console.log('Race is cancelled.',err);

});

What is the value of result when promise.race execues?

Given the code below:

const delay = async delay =>{

return new Promise((resolve,reject)=>{

console.log(1);

setTimeout(resolve,deleay);

});

};

const callDelay = async ()=>{

console.log(2);

const yup = await delay(1000);

console.log(3);

}

console.log(4);

callDelay();

console.log(5);

What is logged to the console?

A developer writes the code below to calculate the factorial of a given number

function sum(number){

return number * sum(number-1);

}

sum(3);

what is the result of executing the code.