Pass the Salesforce Developer JavaScript-Developer-I Questions and answers with ExamsMirror

myArraym can have one level, two levels, or more levels.

Which statement flattens myArray when it can be arbitrarily nested?

Given the requirement to refactor the code above to JavaScript class format, which class

definition is correct?

A)

B)

C)

D)

Given the following code:

is the output of line 02?

Refer to the following object:

const cat ={

firstName: ‘Fancy’,

lastName: ‘ Whiskers’,

Get fullName() {

return this.firstName + ‘ ‘ + this.lastName;

}

};

How can a developer access the fullName property for cat?

A developer has the following array of hourly wages:

Let arr = (8, 5, 9, 75, 11, 25, 7, 75, , 13, 25);

For workers making less than $10 an hour rate should be multiple by 1.25 and returned in a new array.

How should the developer implement the request?

A developer is creating a simple webpage with a button. When a userclicks this button

for the first time, a message is displayed.

The developer wrote the JavaScript code below, but something is missing. The

message gets displayed every time a user clicks the button, instead of just the first time.

01 functionlisten(event) {

02 alert ( ‘Hey! I am John Doe’) ;

03 button.addEventListener (‘click’, listen);

Which two code lines make this code work as required?

Choose 2 answers

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();

Whatis the value of result after the code executes?

A developer receives a comment from the Tech Lead that the code given below has

error:

const monthName = ‘July’;

const year = 2019;

if(year === 2019) {

monthName =‘June’;

}

Which line edit should be made to make this code run?

Refer to the code below:

Function Person(firstName, lastName, eyecolor) {

this.firstName =firstName;

this.lastName = lastName;

this.eyeColor = eyeColor;

}

Person.job = ‘Developer’;

const myFather = new Person(‘John’, ‘Doe’);

console.log(myFather.job);

What is the output after the code executes?

Which statement can a developer apply to increment the browser's navigation history without a page refresh?

Which statement can a developer apply to increment the browser's navigation history without a page refresh?