Salesforce Prepare for your JavaScript Developer I Certification CRT-600 Exam Questions

Refer to the code below:

01 let car1 = new promise((_, reject) =>

02 setTimeout(reject, 2000, ''Car 1 crashed in''));

03 let car2 = new Promise(resolve => setTimeout(resolve, 1500, ''Car 2

completed''));

04 let car3 = new Promise(resolve => setTimeout (resolve, 3000, ''Car 3

Completed''));

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

06 .then(value => (

07 let result = $(value) the race. `;

08 ))

09 .catch( arr => (

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

11 ));

What is the value of result when Promise.race executes?

Refer to the HTML below:

Which JavaScript statement results in changing '' Tony'' to ''Mr. T.''?

A developer wants to define a function log to be used a few times on a single-file JavaScript script.

01 // Line 1 replacement

02 console.log('"LOG:', logInput);

03 }

Which two options can correctly replace line 01 and declare the function for use?

Choose 2 answers

A developer wants to create an object from a function in the browser using the code

below:

Function Monster() { this.name = 'hello' };

Const z = Monster();

What happens due to lack of the new keyword on line 02?

developer is trying to convince management that their team will benefit from using

Node.js for a backend server that they are going to create. The server will be a web server that

handles API requests from a website that the team has already built using HTML, CSS, and

JavaScript.

Which three benefits of Node.js can the developer use to persuade their manager?

Choose 3 answers:

A class was written to represent items for purchase in an online store, and a second class

Representing items that are on sale at a discounted price. THe constructor sets the name to the

first value passed in. The pseudocode is below:

Class Item {

constructor(name, price) {

... // Constructor Implementation

}

}

Class SaleItem extends Item {

constructor (name, price, discount) {

...//Constructor Implementation

}

}

There is a new requirement for a developer to implement a description method that will return a

brief description for Item and SaleItem.

Let regItem =new Item('Scarf', 55);

Let saleItem = new SaleItem('Shirt' 80, -1);

Item.prototype.description = function () { return 'This is a ' + this.name;

console.log(regItem.description());

console.log(saleItem.description());

SaleItem.prototype.description = function () { return 'This is a discounted ' +

this.name; }

console.log(regItem.description());

console.log(saleItem.description());

What is the output when executing the code above ?

Refer to the code below:

Considering that JavaScript is single-threaded, what is the output of line 08 after the code executes?