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| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I - Multiple Choice Exam (JS-Dev-101) |
| Exam Number: | JS-Dev-101 |
| Exam Format: | Multiple Select Questions, Multiple Choice Questions |
| Real Exam Qty: | 60 (multiple choice) |
| Related Certifications: | Salesforce Platform Developer II Salesforce Platform Developer I |
| Passing Score: | 65% |
| Available Languages: | English |
| Exam Price: | $200 USD |
| Exam Duration: | 105 minutes |
| Certificate Validity Period: | 1 year (maintenance required annually in Salesforce certification program) |
| Recommended Training: | MDN Web Docs - JavaScript Guide Salesforce Trailhead - JavaScript Developer I |
| Exam Registration: | Salesforce Certification Registration Kryterion Webassessor (Exam Delivery) |
| Sample Questions: | Salesforce JS-Dev-101 Sample Questions |
| Exam Way: | Online proctored exam via Salesforce authorized testing platform (e.g., Webassessor) |
| Pre Condition: | No formal prerequisites, but familiarity with JavaScript and web development is recommended. |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/javascriptdeveloper |
JS-Dev-101の学習教材で20〜30時間準備したと主張することができます。JS-Dev-101試験に簡単に合格して、期待されるスコアを取得できます。 またSalesforce、JS-Dev-101試験問題の無料デモを提供しており、JS-Dev-101トレーニング資料の有効性と正確性を確認できます。MogiExam やって来てみてください! JS-Dev-101トレーニング資料の高い精度に驚かれることでしょう。 そして、JS-Dev-101練習問題集の高い合格率は99%から100%なので、Salesforce Certified JavaScript Developer - Multiple Choice試験に簡単に合格します。
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質問 # 99
The developer has a function that prints "Hello" to an input name. To test this,thedeveloper created a function that returns "World". However the following snippet does not print " Hello World".
What can the developer do to change the code to print "Hello World" ?
正解:D
質問 # 100
A developer has a fizzbuzz function that, when passed in a number, returns the following:
- 'fizz' if the number is divisible by 3.
- 'buzz' if the number is divisible by 5.
- 'fizzbuzz' if the number is divisible by both 3 and 5.
- empty string if the number is divisible by neither 3 or 5.
Which two test cases properly test scenarios for the fizzbuzz function?
Choose 2 answers
正解:B、C
質問 # 101
Refer to the code:
01 const exec = (item, delay) =>
02 new Promise(resolve => setTimeout(() => resolve(item), delay));
03
04 async function runParallel() {
05 const [result1, result2, result3] = await Promise.all(
06 [exec('x', '100'), exec('y', '500'), exec('z', '100')]
07 );
08 return `parallel is done: ${result1}${result2}${result3}`;
09 }
Which two statements correctly execute runParallel()?
正解:A、C
解説:
Facts about JavaScript Promises:
runParallel() is declared async, which means it always returns a Promise.
Promises are consumed using .then(), .catch(), and .finally().
There is no .done() method in native JavaScript Promises.
The async keyword cannot be placed before a function call (option A is invalid syntax).
Analysis of each option:
A . async runParallel().then(data);
Invalid syntax. async cannot prefix an expression.
B . Valid. Calls the function and attaches a .then() handler.
C . Invalid. .done() is not part of JavaScript Promise API.
D . Valid. Calls runParallel() and chains .then().
Therefore the correct answers are B and D.
JavaScript Knowledge Reference (text-only)
async functions return Promises.
Promises use .then() to retrieve resolved values.
.done() is not part of the standard Promise interface.
質問 # 102
Refer to the code below:
Let inArray =[ [ 1, 2 ] , [ 3, 4, 5 ] ];
Which two statements result in the array [1, 2, 3, 4, 5] ?
Choose 2 answers
正解:A、B
質問 # 103
Which three options show valid methods for creating a fat arrow function?
Choose 3 answers
正解:B、C
質問 # 104
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