JS-Dev-101적중율높은시험대비덤프 - JS-Dev-101인기시험덤프

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Salesforce JS-Dev-101 Exam Overview:

Certification Vendor:Salesforce
Exam Name:Salesforce Certified JavaScript Developer - Multiple Choice
Exam Number:JS-Dev-101
Related Certifications:Salesforce Certified Platform Developer I
Salesforce Certified Developer
Certificate Validity Period:Does not expire; requires maintenance updates
Passing Score:65%
Real Exam Qty:60 scored + up to 5 unscored
Available Languages:Japanese, English
Exam Format:Multiple choice, Multiple select
Exam Duration:105 minutes
Exam Price:USD 200
Recommended Training:Trailhead JavaScript Developer I Certification Prep
Exam Registration:Salesforce Certification Registration
Sample Questions:Salesforce JS-Dev-101 Sample Questions
Exam Way:Online proctored or onsite at authorized testing centers
Pre Condition:No formal prerequisites; recommended: strong JavaScript fundamentals, ES6+ experience, web development familiarity
Official Syllabus URL:https://trailheadacademy.salesforce.com/certificate/exam-javascript-dev---JS-Dev-101

>> JS-Dev-101적중율 높은 시험대비덤프 <<

JS-Dev-101인기시험덤프, JS-Dev-101인증시험공부

IT업계에서 자신만의 위치를 찾으려면 자격증을 많이 취득하는것이 큰 도움이 될것입니다. Salesforce 인증 JS-Dev-101시험은 아주 유용한 시험입니다. Salesforce 인증JS-Dev-101시험출제경향을 퍼펙트하게 연구하여ITDumpsKR에서는Salesforce 인증JS-Dev-101시험대비덤프를 출시하였습니다. ITDumpsKR에서 제공해드리는Salesforce 인증JS-Dev-101시험덤프는 시장에서 판매하고 있는Salesforce 인증JS-Dev-101덤프중 가장 최신버전덤프로서 덤프에 있는 문제만 공부하시면 시험통과가 쉬워집니다.

Salesforce JS-Dev-101 시험요강:

주제소개
주제 1
  • Debugging and Error Handling: Covers proper error handling techniques and the use of the console and breakpoints to debug code.
주제 2
  • 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 3
  • Server Side JavaScript: Covers Node.js implementations, CLI commands, core modules, and package management solutions for given scenarios.
주제 4
  • Browser and Events: Covers DOM manipulation, event handling and propagation, browser-specific APIs, and using Browser Developer Tools to inspect code behavior.
주제 5
  • Testing: Covers evaluating unit test effectiveness against a block of code and modifying tests to improve their coverage and reliability.
주제 6
  • Asynchronous Programming: Covers asynchronous programming concepts and understanding how the event loop controls execution flow and determines outcomes.

최신 Salesforce Developers JS-Dev-101 무료샘플문제 (Q80-Q85):

질문 # 80
Refer to the code snippet:
01 function getAvailableilityMessage(item) {
02 if (getAvailableility(item)) {
03 var msg = "Username available";
04 }
05 return msg;
06 }
What is the return value of msg when getAvailableilityMessage("newUserName") is executed and getAvailableility("newUserName") returns false?

정답：C

설명：
Comprehensive and Detailed Explanation From Exact Extract JavaScript Knowledge:
Key details:
var has function scope, not block scope.
Declaration var msg is hoisted to the top of the function, but initialization only happens if the if condition is true.
Effectively, the function behaves like:
function getAvailableilityMessage(item) {
var msg; // hoisted declaration
if (getAvailableility(item)) {
msg = "Username available";
}
return msg;
}
Now, given:
getAvailableility("newUserName") returns false.
Execution:
The if condition is false, so the body does not execute.
Therefore msg is declared but never assigned.
In JavaScript, an uninitialized variable that has been declared with var has the value undefined.
Thus:
return msg; // returns undefined
Why other options are wrong:
A: "newUserName" - msg never receives the parameter value; it's only set to "Username available" inside the if, which does not run.
B: "msg is not defined" - That kind of error occurs if msg were never declared. Here it is declared via var, so it is defined but undefined.
D: "Username available" - This would require the if branch to run, which it does not when getAvailableility(...) is false.
So the return value is:
undefined
Study Guide Concepts:
var hoisting and function scope
Uninitialized variables default to undefined
Control flow and conditional initialization
________________________________________


질문 # 81
Why would a developerspecify a package.jason as a developed forge instead of a dependency ?

정답：A


질문 # 82
Refer to the code:

Given the code above, which three properties are set pet1? Choose 3 answers:

정답：C,D,E


질문 # 83
Given the code below:

What is logged to the console'

정답：B


질문 # 84
A developer is leading the creation of a new browser application that will serve a single page application. The team wants to use a new web framework Minimalsit.js.The Lead developer wants to advocate for a more seasoned web framework that already has a community around it.
Which two frameworks should the lead developer advocate for?
Choose 2 answers

정답：A,D


질문 # 85
......

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