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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:

A.

If there is an existing setTimeout and the search string change, allow the existingsetTimeout to finish, and do not enqueue a new setTimeout.

B.

When thesearch string changes, enqueue the request within a setTimeout.

C.

Ensure that the network request has the property debounce set to true.

D.

If there is an existing setTimeout and the search string changes, cancel the existingsetTimeout using thepersisted timerId and replace it with a new setTimeout.

E.

Store the timeId of the setTimeout last enqueued by the search string change handle.

Refer to the following code:

What is the value of output on line 11?

A.

[1, 2]

B.

[‘’foo’’, ‘’bar’’]

C.

[‘’foo’’:1, ‘’bar’’:2’’]

D.

An error will occur due to the incorrect usage of the for…of statement on line 07.

Refer to HTML below:

This card is smaller.

The width and height of this card is determined by its

contents.

Which expression outputs the screen width of the element with the ID card-01?

A.

document.getElementById(‘ card-01 ’).getBoundingClientRest().width

B.

document.getElementById(‘ card-01 ’).style.width

C.

document.getElementById(‘ card-01 ’).width

D.

document.getElementById(‘ card-01 ’).innerHTML.lenght*e

Refer to the code below:

let car1 = new Promise((_ ,reject)=> setTimeout(reject,2000,"Car1 crashed in"));

let car2 = new Promise(resolve => setTimeout(resolve,1500,"Car2 completed"));

let car3 = new Promise(resolve => setTimeout(resolve,3000,"Car3 completed"));

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

.then(value=>{

let result = `${value} the race.`;

}).catch(err=>{

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

});

What is the valueof result when promise.race execues?

A.

Car2 completed the race.

Refer to the following array:

Let arr = [1, 2, 3, 4, 5];

Which three options result in x evaluating as [1,2]?

Choose 3 answer

A.

let x = arr. slice (2);

B.

let x = arr. slice (0, 2);

C.

let x arr.filter((a) => (return a <= 2 });

D.

let x = arr.filter ((a) => 2 }) ;

E.

let x =arr.splice(0, 2);

Refer to the followingcode:

A developer has an ErrorHandler module that contains multiple functions.

What kind of export be leverages so that multiple functions can beused?

A.

Named

B.

All

C.

Multi

D.

Default

Refer to the following code:

Which statement should be added to line 09 for the code to display. The boat has a capacity of 10 people?

A.

super.size = size;

B.

ship.size size;

C.

super (size);

D.

this.size = size;

Universal Containers (UC) just launched anew landing page, but users complain that the website is slow. A developer found some functions any that might cause this problem. To verify this, the developer decides to execute everything and log the time each of these three suspicious functions consumes.

Which function can the developer use to obtain the time spent by every one of the three functions?

A.

console. timeLog ()

B.

console.timeStamp ()

C.

console.trace()

D.

console.getTime ()

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?

A.

“Username available”

B.

“newUserName”

C.

“Msg is not defined”

D.

undefined