A developer writes the code below to calculate the factorial of a given number function sum(number){ return number * sum(number-1);
}
sum(3);
what is the result of executing the code.

• A.-Infinity
• B.0
• C.6
• D.Error

Comment: *

Name: *

Email: *

Verification: *

JavaScript:
01 function Tiger() {
02 this.type = 'Cat';
03 this.size = 'large';
04 }
05
06 let tony = new Tiger();
07 tony.roar = () => {
08 console.log('They\'re great!');
09 };
10
11 function Lion() {
12 this.type = 'Cat';
13 this.size = 'large';
14 }
15
16 let leo = new Lion();
17 // Insert code here
18 leo.roar();
Which two statements could be inserted at line 17 to enable line 18?

• A.leo.roar = () => { console.log('They\'re pretty good!'); };
• B.Object.assign(leo, tony);
• C.Object.assign(leo, Tiger);
• D.leo.prototype.roar = () => { console.log('They\'re pretty good!'); };

Comment: *

Name: *

Email: *

Verification: *

A developer has an ErrorHandler module that contains multiple functions.
What kind of export be leverages so that multiple functions can beused?

• A.Default
• B.All
• C.Multi
• D.Named

Comment: *

Name: *

Email: *

Verification: *

Given a value, which three options can a developer use to detect if the value is NaN?

• A.value === Number.NaN
• B.value == NaN
• C.Object.is(value, NaN)
• D.value !== value
• E.Number.isNaN(value)

Comment: *

Name: *

Email: *

Verification: *

Which statement accurately describes an aspect of promises?

• A.In a.then() function, returning results is not necessary since callbacks will catch the result of a previous promise.
• B..then() cannot be added after a catch.
• C..then() manipulates and returns the original promise.
• D.Arguments for the callback function passed to .then() are optional.

Comment: *

Name: *

Email: *

Verification: *