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| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I Exam |
| Exam Number: | JS-Dev-101 / JavaScript-Developer-I |
| Real Exam Qty: | 60 scored + up to 5 unscored |
| Related Certifications: | Salesforce Certified Lightning Web Components Specialist Salesforce Certified Platform Developer I |
| Available Languages: | English, Japanese |
| Passing Score: | 65% |
| Certificate Validity Period: | No expiration; requires regular maintenance via Trailhead modules |
| Exam Duration: | 105 minutes |
| Exam Format: | Multiple-choice, Multiple-select |
| Exam Price: | USD 200 (+ applicable taxes) |
| Recommended Training: | Salesforce JavaScript Developer I Certification Prep |
| Exam Registration: | Salesforce Certification Registration |
| Sample Questions: | Salesforce JavaScript-Developer-I Sample Questions |
| Exam Way: | Online proctored or onsite at authorized testing centers |
| Pre Condition: | No formal prerequisites; 1–2 years of JavaScript development experience recommended |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/javascript-developer-i |
>> JavaScript-Developer-I Valid Practice Questions <<
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Salesforce JavaScript-Developer-I Certification Exam consists of 60 multiple-choice questions and is a timed exam that lasts for 105 minutes. JavaScript-Developer-I exam is administered by Salesforce and can be taken either online or at a testing center. To be eligible for the exam, you must have completed the JavaScript Development on the Salesforce Platform course or have equivalent knowledge and experience. Upon passing the exam, you will earn the Salesforce Certified JavaScript Developer I certification, which is a valuable credential for developers looking to advance their careers in Salesforce development.
Salesforce JavaScript-Developer-I (Salesforce Certified JavaScript Developer I) Exam is a certification exam offered by Salesforce for developers who specialize in working with JavaScript on the Salesforce platform. JavaScript-Developer-I exam is designed to test the knowledge and skills of developers on a range of topics related to JavaScript development, including programming fundamentals, data modeling, user interface development, and more. Passing the exam is a great way for developers to demonstrate their expertise in JavaScript development on the Salesforce platform, and can help them advance their careers in this field.
NEW QUESTION # 63
A developer copied a JavaScript object:
How does the developer access dan's forstName,lastName? Choose 2 answers
Answer: C,D
NEW QUESTION # 64
Refer to the code below:
01 let timedFunction = () = > {
02 console.log( ' Timer called. ' );
03 };
04
05 let timerId = setInterval(timedFunction, 1000);
Which statement allows a developer to cancel the scheduled timed function?
Answer: D
Explanation:
The code:
let timerId = setInterval(timedFunction, 1000);
* setInterval schedules timedFunction to run every 1000 ms.
* It returns an interval ID (here stored in timerId), which is used to cancel the interval later.
To cancel:
* Use clearInterval(timerId);
This is the standard browser (and Node.js) API:
* let id = setInterval(fn, delay);
* clearInterval(id); stops future executions of that interval.
Check other options:
* B. removeInterval(timerId);
* There is no removeInterval function in the standard JavaScript timer API.
* C. removeInterval(timedFunction);
* Again, no such function; and timers are cancelled by ID, not by the callback function reference.
* D. clearInterval(timedFunction);
* clearInterval expects the ID returned by setInterval, not the callback function.
* Passing the function does not cancel the timer.
Therefore, the correct statement is:
The answer: A
Study Guide / Concept References (no links):
* Timer APIs: setInterval and clearInterval
* Relationship between timer ID and cancellation
* Difference between interval ID and callback function
* Basic async timing patterns in JavaScript
NEW QUESTION # 65
Which statement phrases successfully?
Answer: C
NEW QUESTION # 66
Refer to the code below:
What is the value of result after the code executes?
Answer: D
NEW QUESTION # 67
Given two expressions var1 and var2, what are two valid ways to return the logical AND of the two expression and ensure it is data type Boolean? Choose 2 answers
Answer: A,B
NEW QUESTION # 68
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