JS-Dev-101적중율높은시험덤프공부 - JS-Dev-101합격보장가능인증덤프

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현재 경쟁울이 심한IT시대에,Salesforce JS-Dev-101자격증 취득만으로 이 경쟁이 심한 사회에서 자신만의위치를 보장할수 있고 더욱이는 한층업된 삶을 누릴수 있을수도 있습니다. 우리Fast2test 에서 여러분은Salesforce JS-Dev-101관련 학습지도서를 얻을 수 있습니다. 우리Fast2test는 IT업계엘리트 한 강사들이 퍼펙트한Salesforce JS-Dev-101문제집을 만들어서 제공합니다. 우리가 제공하는Salesforce JS-Dev-101문제와 답으로 여러분은 한번에 성공적으로 시험을 패스 하실수 있습니다. 중요한것 저희 문제집을 선택함으로 여러분의 시간도 절약해드리고 무엇보다도 많은 근심없이 심플하게 시험을 패스하여 좋다는 점입니다.

Salesforce JS-Dev-101 시험요강:

주제	소개
주제 1	Testing: Covers evaluating unit test effectiveness against a block of code and modifying tests to improve their coverage and reliability.
주제 2	Variables, Types, and Collections: Covers declaring and initializing variables, working with strings, numbers, dates, arrays, and JSON, along with understanding type coercion and truthy falsy evaluations.
주제 3	Server Side JavaScript: Covers Node.js implementations, CLI commands, core modules, and package management solutions for given scenarios.
주제 4	Objects, Functions, and Classes: Covers function, object, and class implementations to meet business requirements, along with the use of modules, decorators, variable scope, and execution flow.
주제 5	Asynchronous Programming: Covers asynchronous programming concepts and understanding how the event loop controls execution flow and determines outcomes.
주제 6	Debugging and Error Handling: Covers proper error handling techniques and the use of the console and breakpoints to debug code.

>> JS-Dev-101적중율 높은 시험덤프공부 <<

JS-Dev-101합격보장 가능 인증덤프, JS-Dev-101적중율 높은 덤프공부

Fast2test를 선택함으로 여러분은 Salesforce 인증JS-Dev-101시험에 대한 부담은 사라질 것입니다.우리 Fast2test는 끊임없는 업데이트로 항상 최신버전의 Salesforce 인증JS-Dev-101시험덤프임을 보장해드립니다.만약 덤프품질을 확인하고 싶다면Fast2test 에서 무료로 제공되는Salesforce 인증JS-Dev-101덤프의 일부분 문제를 체험하시면 됩니다.Fast2test 는 100%의 보장도를 자랑하며Salesforce 인증JS-Dev-101시험을 한번에 패스하도록 도와드립니다.

최신 Salesforce Developers JS-Dev-101 무료샘플문제 (Q39-Q44):

질문 # 39
Refer to the code below:
01 const exec = (item, delay) =>{
02 newPromise(resolve => setTimeout( () => resolve(item), delay)),
03 async function runParallel() {
04 Const (result1, result2, result3) = await Promise.all{
05 [exec ('x', '100') , exec('y', 500), exec('z', '100')]
06 );
07 return `parallel is done: $(result1)$(result2)$(result3)`;
08 }
}
}
Which two statements correctly execute the runParallel () function?
Choose 2 answers

A. runParallel () .then(function(data)return data
B. Async runParallel () .then(data);
C. runParallel () .then(data);
D. runParallel ( ). done(function(data){return data;});

정답：A,D

질문 # 40
A developer imports:
import printPrice from '/path/PricePrettyPrint.js';
What must be true about printPrice for this import to work?

A. printPrice must be a multi export
B. printPrice must be a named export
C. printPrice must be the default export
D. printPrice must be an all export

정답：C

설명：
The syntax:
import printPrice from 'module';
means the module must export its function as a default export:
export default function printPrice() { ... }
Why the others are wrong:
Named exports require curly braces:
import { printPrice } from 'module';
"all export" and "multi export" are not JavaScript terms.
Therefore, printPrice must be the default export.
JavaScript Knowledge Reference (text-only)
Default imports use: import name from 'module'.
Named imports require braces: import { name } from 'module'.

질문 # 41
A developer creates a simple webpage with an input field. When a user enters text in the input field and clicks the button, the actual value of the field must be displayedin the console.
Here is the HTML file content:
<input type =" text" value="Hello" name ="input">
<button type ="button" >Display </button> The developer wrote the javascript code below:
Const button = document.querySelector('button');
button.addEvenListener('click', () => (
Const input = document.querySelector('input');
console.log(input.getAttribute('value'));
When the user clicks the button, the output is always "Hello".
What needs to be done to make this code work as expected?

A. Replace line 03 with const input = document.getElementByName('input');
B. Replace line 02 with button.addEventListener("onclick", function() {
C. Replace line 02 with button.addCallback("click", function() {
D. Replace line 04 with console.log(input .value);

정답：D

질문 # 42
Original constructor function:
01 function Vehicle(name, price) {
02 this.name = name;
03 this.price = price;
04 }
05 Vehicle.prototype.priceInfo = function () {
06 return `Cost of the $(this.name) is $(this.price)$`;
07 }
08 var ford = new Vehicle('Ford Fiesta', '20,000');
Which class definition is correct?

A. class Vehicle {
constructor(name, price) {
this.name = name;
this.price = price;
}
priceInfo() {
return 'Cost of the ${this.name} is ${this.price}$';
}
}
B. class Vehicle {
constructor(name, price) {
this.name = name;
this.price = price;
}
priceInfo() {
return `Cost of the ${this.name} is ${this.price}$`;
}
}
C. class Vehicle {
vehicle(name, price) {
this.name = name;
this.price = price;
}
priceInfo() {
return 'Cost of the ${this.name} is ${this.price}$';
}
}
D. class Vehicle {
constructor() {
this.name = name;
this.price = price;
}
priceInfo() {
return `Cost of the ${this.name} is ${this.price}$`;
}
}

정답：B

설명：
A correct conversion from constructor-function syntax to ES6 class syntax must satisfy:
Use a constructor(name, price) method.
Assign instance properties inside the constructor.
Define methods without function keyword directly in the class body.
Use proper JavaScript template literals (backticks).
Evaluate each option:
Option A
Incorrect template literal syntax: uses single quotes with ${} which will not interpolate.
Option B
Incorrect:
The method vehicle() is not recognized as a constructor.
The constructor method is missing.
Option C
Incorrect:
The constructor has no parameters, but uses name and price which are undefined.
Option D
Correct:
Uses proper constructor with parameters.
Correct assignment of instance properties.
Correct template literal using backticks.
This is the valid ES6 class translation.
JavaScript Knowledge Reference (text-only)
ES6 classes require a constructor method for initialization.
Template literals must use backticks.
Methods inside classes are defined without the function keyword.
Omitted constructor parameters lead to undefined instance fields.

질문 # 43
for (let number = 2; number <= 5; number += 1) {
// faster code statement here
}
Which statement meets the requirements to log an error when the Boolean statement evaluates to false?

A. assert(number + 2 === 0);
B. console.assert(number + 2 === 0);
C. console.error(number + 2 === 0);
D. console.classy(number + 2 === 0);

정답：B

설명：
console.assert(condition, message?) logs an assertion error if condition is falsy.
To log an error when number + 2 === 0 is false, use:
console.assert(number + 2 === 0);
Other options are invalid or do not behave as described: console.error always logs, assert alone is not a built-in browser global, and console.classy doesn't exist.

질문 # 44
......

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