최신JS-Dev-101덤프시험대비자료

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JS-Dev-101덤프, JS-Dev-101인기덤프, JS-Dev-101시험대비 공부, JS-Dev-101최고품질 시험덤프자료, JS-Dev-101시험대비 덤프문제

그 외, DumpTOP JS-Dev-101 시험 문제집 일부가 지금은 무료입니다: https://drive.google.com/open?id=1NcwHEJ2bOH46SqPuicMLfKh0IrykYY1m

우리는 고객이 첫 번째 시도에서Salesforce JS-Dev-101 자격증시험을 합격할수있다는 것을 약속드립니다. Salesforce JS-Dev-101 시험을 합격하여 자격증을 손에 넣는다면 취직 혹은 연봉인상 혹은 승진이나 이직에 확실한 가산점이 될것입니다. Salesforce JS-Dev-101시험 어려운 시험이지만 저희Salesforce JS-Dev-101덤프로 조금이나마 쉽게 따봅시다.

Salesforce JS-Dev-101 Exam Syllabus Topics:

Section Weight Objectives
Topic 1: Variables, Types, and Collections 23% - JSON parsing and manipulation
- Data types, type coercion, truthy/falsy values
- Variable declaration and scope
- Strings, numbers, dates, arrays and methods
Topic 2: Testing 7% - Unit test structure and effectiveness
- Test coverage and improvement
Topic 3: Asynchronous Programming 13% - Callbacks, promises, async/await
- Event loop and execution flow
Topic 4: Debugging and Error Handling 7% - Console usage, breakpoints and debugging techniques
- Error types and handling strategies
Topic 5: Objects, Functions, and Classes 25% - Object creation, properties, prototypes
- Function types, scope, closures, arrow functions
- ES6 classes, inheritance, modules, decorators
Topic 6: Server Side JavaScript 8% - Package management and CLI tools
- Node.js fundamentals and core modules
Topic 7: Browser and Events 17% - Event handling, propagation, listeners
- DOM selection and manipulation
- Browser APIs and developer tools

>> JS-Dev-101덤프 <<

최신 JS-Dev-101덤프 인기 덤프문제 다운

IT인증자격증만 소지한다면 일상생활에서 많은 도움이 될것입니다. 하지만 문제는 어떻게 간단하게 시험을 패스할것인가 입니다. DumpTOP는 IT전문가들이 제공한 시험관련 최신 연구자료들을 제공해드립니다.DumpTOP을 선택함으로써 여러분은 성공도 선택한것이라고 볼수 있습니다. DumpTOP의Salesforce 인증JS-Dev-101시험대비 덤프로Salesforce 인증JS-Dev-101시험을 패스하세요.

최신 Salesforce Developers JS-Dev-101 무료샘플문제 (Q12-Q17):

질문 # 12
Refer to the following array:
let arr = [1, 2, 3, 4, 5];
Which two lines of code result in a second array, arr2, created such that arr2 is a reference to arr?

  • A. let arr2 = arr.sort();
  • B. let arr2 = arr;
  • C. let arr2 = arr.slice(0, 5);
  • D. let arr2 = Array.from(arr);

정답：A,B

설명：
The correct answers are C and D.
Arrays in JavaScript are objects. When an array variable is assigned directly to another variable, both variables point to the same array in memory.
Option C is correct:
let arr2 = arr;
This does not create a new array. It creates another reference to the same array.
Example:
arr2.push(6);
console.log(arr);
Output:
[1, 2, 3, 4, 5, 6]
Changing arr2 also affects arr because both variables reference the same array.
Option D is also correct:
let arr2 = arr.sort();
The sort() method sorts the array in place and returns the same array reference. Therefore, arr2 refers to the same array object as arr.
The incorrect options create copies:
let arr2 = arr.slice(0, 5);
creates a shallow copy.
let arr2 = Array.from(arr);
also creates a new shallow copy.
So the two lines that make arr2 reference the original arr are C and D.


질문 # 13
Given the JavaScript below:
01 function filterDOM (searchString) {
02 const parsedSearchString = searchString && searchString.toLowerCase() ;
03 document.quesrySelectorAll(' .account' ) . forEach(account => (
04 const accountName = account.innerHTML.toLOwerCase();
05 account. Style.display = accountName.includes(parsedSearchString) ? /*Insert code*/;
06 )};
07 }
Which code should replace the placeholder comment on line 05 to hide accounts that do not match thesearch string?

  • A. ' name ' : ' block '
  • B. ' visible ' : ' hidden '
  • C. ' Block ' : ' none '
  • D. ' hidden ' : ' visible '

정답：C


질문 # 14
Given the following code:
01 counter = 0;
02 const logCounter = () => {
03 console.log(counter);
04 };
05 logCounter();
06 setTimeout(logCounter, 2100);
07 setInterval(() => {
08 counter++;
09 logCounter();
10 }, 1000);
What will be the first four numbers logged?

  • A. 0112
  • B. 0122
  • C. 0012
  • D. 0123

정답：B

설명：
Comprehensive and Detailed Explanation From Exact Extract JavaScript knowledge:
We need to track the value of counter and the timing of each call to logCounter.
Initial state:
Line 01: counter = 0;
Line 02-04: logCounter logs the current value of counter.
Execution order and timing:
Line 05: logCounter();
Called immediately at time t = 0 ms.
counter is 0.
First log: 0.
Line 06: setTimeout(logCounter, 2100);
Schedules logCounter to run once after 2100 ms.
No log yet at this line.
Line 07-10: setInterval(() => { counter++; logCounter(); }, 1000);
Schedules a repeating callback every 1000 ms (1 second).
First interval callback runs at t ≈ 1000 ms.
Now follow the timeline:
t = 0 ms:
logCounter(); from line 05
Logs: 0
t = 1000 ms (first interval execution):
counter++; → counter goes from 0 to 1.
logCounter(); logs 1.
t = 2000 ms (second interval execution):
counter++; → counter goes from 1 to 2.
logCounter(); logs 2.
t = 2100 ms (timeout from line 06):
logCounter(); runs again.
counter is still 2 (next setInterval will be at t = 3000 ms).
Logs 2.
So the first four logs are:
0
1
2
2
Concatenated as in the options: 0122.
Therefore, the correct choice is:
Study Guide / Concept Reference (no links):
setTimeout and setInterval timing behavior
Order of execution in the event loop
Closures capturing variables (here, logCounter using counter)
Understanding asynchronous scheduling in JavaScript
________________________________________


질문 # 15
Given the code below:

Which method can be used to provide a visual representation of the list of users and to allow sorting by the name or email attribute?

  • A. console.groupCol lapsed (usersList) ;
  • B. console.group(usersList) ;
  • C. console.info(usersList) ;
  • D. console.table(usersList) ;

정답：B


질문 # 16
A developer wants to iterate through an array of objects and count the objects and count the objects whose property value, name, starts with the letterN.
Const arrObj = [{"name" : "Zach"} , {"name" : "Kate"},{"name" : "Alise"},{"name" : "Bob"},{"name" :
"Natham"},{"name" : "nathaniel"}
Refer to the code snippet below:
01 arrObj.reduce(( acc, curr) => {
02 //missing line 02
02 //missing line 03
04 ). 0);
Which missing lines 02 and 03 return the correct count?

  • A. Const sum = curr.name.startsWith('N') ? 1: 0;Return acc +sum
  • B. Const sum = curr.startsWIth('N') ? 1: 0;Return curr+ sum
  • C. Const sum =curr.name.startsWIth('N') ? 1: 0;Return curr+ sum
  • D. Const sum = curr.startsWith('N') ? 1: 0;Return acc +sum

정답：A


질문 # 17
......

불과 1,2년전만 해도 Salesforce JS-Dev-101덤프를 결제하시면 수동으로 메일로 보내드리기에 공휴일에 결제하시면 덤프를 보내드릴수 없어 고객님께 페를 끼쳐드렸습니다. 하지만 지금은 시스템이 업그레이드되어Salesforce JS-Dev-101덤프를 결제하시면 바로 사이트에서 다운받을수 있습니다. DumpTOP는 가면갈수록 고객님께 편리를 드릴수 있도록 나날이 완벽해질것입니다.

JS-Dev-101인기덤프: https://www.dumptop.com/Salesforce/JS-Dev-101-dump.html

2026 DumpTOP 최신 JS-Dev-101 PDF 버전 시험 문제집과 JS-Dev-101 시험 문제 및 답변 무료 공유: https://drive.google.com/open?id=1NcwHEJ2bOH46SqPuicMLfKh0IrykYY1m

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