Latest Success Metrics For Actual JavaScript-Developer-I Exam (Updated 225 Questions) [Q27-Q43]

NEW QUESTION 27
A developer has the function, shown below, that is called when a page loads.

Where can the developer see the log statement after loading the page in the browser?

NEW QUESTION 28
A developer has a web server running with Node.js. The command to start the web server is node server.js.
The web server started having
latency issues. Instead of a one second turnaround for web requests, the developer now sees a five second turnaround.
Which command can the web developer run to see what the module is doing during the latency period?

NEW QUESTION 29
Refer to the code below:

Which value can a developer expect when referencing country,capital,cityString?

NEW QUESTION 30
Refer to code below:
Let a =’a’;
Let b;
// b = a;
console.log(b);
What is displayed when the code executes?

NEW QUESTION 31
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.`)
}
}
let myDog = new Dog(‘Puppy’);
myDog.makeSound();
What is the console output?

NEW QUESTION 32
Refer to the following array:
Let arr = [1, 2, 3, 4, 5];
Which three options result in x evaluating as (3, 4, 5)?
Choose 3 answers

NEW QUESTION 33
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();
What is the value of result after the code executes?

NEW QUESTION 34
A developer is debugging a web server that uses Node.js The server hits a runtimeerror
every third request to an important endpoint on the web server.
The developer added a break point to the start script, that is at index.js at he root of the
server’s source code. The developer wants to make use of chrome DevTools to debug.
Which command can be run to access DevTools and make sure the breakdown is hit ?

NEW QUESTION 35
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 ?

NEW QUESTION 36
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?

NEW QUESTION 37
Which statement can a developer apply to increment the browser’s navigation history without a page refesh?

NEW QUESTION 38
Given the code block below:

What should a developer insert line 15 to output the following message using the load method?
SNENneziz is loading a cartridge game: super Monic 3x Force…

NEW QUESTION 39
The developer has a function that prints “Hello” to an input name. To test this, thedeveloper created a function that returns “World”. However the following snippet does not print ” Hello World”.

What can the developer do to change the code to print “Hello World” ?

NEW QUESTION 40
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?

NEW QUESTION 41
Which option is true about the strict mode in imported modules?

NEW QUESTION 42
A developer is leading the creation of a new web server for their team that will fulfill API requests from an existing client.
The team wants a web server that runs on Node.Js, and they want to use the new web framework Minimalist.Js. The lead developer wants to advocate for a more seasoned back-end framework that already has a community around it.
Which two frameworks could the lead developer advocate for?
Choose 2 answers

NEW QUESTION 43
Universal Containers (UC) notices that its application that allows users to search for accounts makes a network request each time a key is pressed. This results in too many requests for the server to handle.
* Address this problem, UC decides to implement a debounce function on string change handler.
What are three key steps to implement this debounce function?
Choose 3 answers: