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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q177-Q182):

NEW QUESTION # 177
Refer to the code below:

Why does the function bar have access to variable =?

A. Hoisting
B. Inner function's scope
C. Prototype chain
D. Outer function's scope

Answer: B

NEW QUESTION # 178
developer wants to use a module nameduniversalContainersLib and them callfunctions from it.
How should a developer import every function from the module and then call the functions foo and bar ?

A. import * from
'/path/universalContaineraLib.js';universalContainersLib.foo();universalContainersLib.bar();
B. import all from
'/path/universalContaineraLib.js';universalContainersLib.foo();universalContainersLib.bar();
C. import (foo,bar) from '/path/universalContainersLib.js';foo();bar();
D. import * ad lib from '/path/universalContainersLib.js';lib.foo();lib.bar();

Answer: D

NEW QUESTION # 179
Refer to the following code that imports a module named Utills,
Which two implementations of Utill, je export foo and bar such that the code above runs without error?
Choose 2 answers

A. Const foo = () => ( return 'foo ' ; )
Const bar => ( return 'bar' ; )
Export (foo, bar)
B. Const foo = ( ) => ( return 'foo; ; )
Const bar => => { return 'bar ';}
Export default foo, bar;
C. //FooUtill.js and barUtils, js exist
Import (foo) from ,/Path/footUtils.js,:
Export (foo, bar)
D. Export default class (
Foo ( ) ( return 'foo ,; )
Bar ( ) ( return ;bar ; )

Answer: D

NEW QUESTION # 180
Which statement accurately describes the behaviour of the async/ await keyworks ?

A. The associated sometimes returns a promise.
B. The associated function can only be called via asynchronous methods
C. The associated function will always return a promise
D. The associated class contains some asynchronous functions.

Answer: C

NEW QUESTION # 181
A developer is required to write a function that calculates the sum of elements in an
array but is getting undefined every time the code is executed. The developer needs to find
what is missing in the code below.
Const sumFunction = arr => {
Return arr.reduce((result, current) => {
//
Result += current;
//
), 10);
);
Which option makes the code work as expected?

A. Replace line 02 with return arr.map(( result, current) => (
B. Replace line 05 with return result;
C. Replace line 03 with if(arr.length == 0 ) ( return 0; )
D. Replace line 04 with result = result +current;

Answer: B

NEW QUESTION # 182
......

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