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

Refer the code below.

x=3.14;

function myfunction() {

"use strict";

y=x;

}

z=x;

myFunction();

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 teamhas already built using HTML, CSS, and

JavaScript.

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

Choose 3 answers:

Refer to the string below.

Const str=’Salesforce’;

Which twostatementsresults in the word 'Sales'?

Given the code below:

const copy = JSON.stringify([ newString(‘ false ’), new Bollean( false ), undefined ]);

What is the value of copy?

What are two unique features of functions defined with a fat arrow as compared to normal function definition?

Choose 2 answers

A developer wants to iterate through an array of objects and count the objects and count

the objects whose property value, name, starts with the letterN.

Const arrObj = [{“name” : “Zach”} , {“name” :“Kate”},{“name” : “Alise”},{“name” : “Bob”},{“name” :

“Natham”},{“name” : “nathaniel”}

Refer to the code snippet below:

01 arrObj.reduce(( acc, curr) => {

02 //missing line 02

02 //missing line 03

04 ). 0);

Which missing lines 02 and 03 return the correctcount?

Refer to code below:

console.log(0);

setTimeout(() => (

console.log(1);

});

console.log(2);

setTimeout(() => {

console.log(3);

), 0);

console.log(4);

In which sequence will the numbers be logged?

Referto the code below:

new Promise((resolve, reject) => {

const fraction = Math.random();

if( fraction >0.5) reject("fraction > 0.5, " + fraction);

resolve(fraction);

})

.then(()=>console.log("resolved"))

.catch((error) => console.error(error))

.finally(() =>console.log(" when am I called?"));

When does Promise.finally on line 08 get called?

Which function should a developer use to repeatedly execute code at a fixed interval ?

Why would a developerspecify apackage.jason as a developed forge instead of a dependency ?