Salesforce Certified JavaScript Developer I Practice Test - Questions Answers, Page 5

developer wants to use a module named universalContainersLib and them call functions from it.

How should a developer import every function from the module and then call the fuctions foo and bar ?

Refer to the code snippet:

Function getAvailabilityMessage(item) {

If (getAvailability(item)){

Var msg ="Username available";

}

Return msg;

}

A developer writes this code to return a message to user attempting to register a new username. If the username is available, variable.

What is the return value of msg hen getAvailabilityMessage ("newUserName" ) is executed and getAvailability("newUserName") returns false?

Given the requirement to refactor the code above to JavaScript class format, which class definition is correct?

A developer wants to set up a secure web server with Node.js. The developer creates a directory locally called app-server, and the first file is app-server/index.js Without using any third-party libraries, what should the developer add to index.js to create the secure web server?

Given the code below:

const delay = sync delay => {

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

setTimeout (resolve, delay);});};

const callDelay =async () =>{

const yup =await delay(1000);

console.log(1);

What is logged to the console?

Refer to the following code:

Let obj ={

Foo: 1,

Bar: 2

}

Let output =[],

for(let something in obj{

output.push(something);

} console.log(output);

What is the output line 11?

Refer to the code below?

Let searchString = ' look for this ';

Which two options remove the whitespace from the beginning of searchString?

Choose 2 answers

Which three actions can be using the JavaScript browser console?

Choose 3 answers:

In which situation should a developer include a try .. catch block around their function call ?