Question 1

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

Options :

A : setIntervel

B : setTimeout

C : setPeriod

D : setInteria

Answer: A

Question 2

Given two expressions var1 and var2. What are two valid ways to return the logical ANDof the two expressions and ensure it is data type Boolean ?Choose 2 answers:

Options :

A : Boolean(var1 && var2)

B : var1 && var2

C : var1.toBoolean() && var2toBoolean()

D : Boolean(var1) && Boolean(var2)

Answer: A,D

Question 3

A developer is working on an ecommerce website where the delivery date is dynamicallycalculated based on the current day. The code line below is responsible for this calculation.Const deliveryDate = new Date ();Due to changes in the business requirements, the delivery date must now be today'sdate + 9 days.Which code meets this new requirement?

Options :

A : deliveryDate.setDate(( new Date ( )).getDate () +9);

B : deliveryDate.setDate( Date.current () + 9);

C : deliveryDate.date = new Date(+9) ;

D : deliveryDate.date = Date.current () + 9;

Answer: A

Question 4

Refer to the following code that imports a module named utils:import (foo, bar) from '/path/Utils.js';foo() ;bar() ;Which two implementations of Utils.js export foo and bar such that the code above runs withouterror?Choose 2 answers

Options :

A : // FooUtils.js and BarUtils.js existImport (foo) from '/path/FooUtils.js';Import (boo) from ' /path/NarUtils.js';

B : const foo = () => { return 'foo' ; }const bar = () => { return 'bar' ; }export { bar, foo }

C : Export default class {foo() { return 'foo' ; }bar() { return 'bar' ; }}

D : const foo = () => { return 'foo';}const bar = () => {return 'bar'; }Export default foo, bar;

Answer: B,C

Question 5

Refer to the code below:let timeFunction =() => {console.log('Timer called.'');};let timerId = setTimeout (timedFunction, 1000);Which statement allows a developer to cancel the scheduled timed function?

Options :

A : removeTimeout(timedFunction);

B : removeTimeout(timerId);

C : clearTimeout(timerId);

D : clearTimeout(timedFunction);

Answer: C

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