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| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I |
| Exam Number: | JS-Dev-101 |
| Available Languages: | English |
| Passing Score: | 65% |
| Exam Price: | $200 USD |
| Certificate Validity Period: | None (Credential does not expire) |
| Exam Duration: | 105 minutes |
| Related Certifications: | Salesforce Certified JavaScript Developer I Credential |
| Real Exam Qty: | 60 (plus up to 5 unscored pilot questions) |
| Exam Format: | Multiple-choice, Multiple-select |
| Sample Questions: | Salesforce JavaScript-Developer-I Sample Questions |
| Exam Way: | Online (proctored via Pearson VUE) or On-site (at a Pearson VUE testing center) |
| Pre Condition: | None required. 1-2 years of JavaScript development experience (front-end and/or back-end) is strongly recommended. Note: To earn the full credential, candidates must also pass the Lightning Web Components Specialist Superbadge in addition to the JS-Dev-101 exam. |
| Official Syllabus URL: | https://trailhead.salesforce.com/en/credentials/javascriptdeveloperi |
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Upon passing the Salesforce JavaScript-Developer-I Exam, candidates will be awarded the Salesforce Certified JavaScript Developer I certification. Salesforce Certified JavaScript Developer (JS-Dev-101) certification is a valuable asset for any developer who wants to showcase their expertise in Salesforce development and increase their chances of finding job opportunities in the field.
NEW QUESTION # 12
Refer to the code below:
What is the result of running line 05?
Answer: A
NEW QUESTION # 13
A developer wrote the following code:
01 let X = object.value;
02
03 try {
04 handleObjectValue(X);
05 } catch (error) {
06 handleError(error);
07 }
The developer has a getNextValue function to execute after handleObjectValue(), but
does not want to execute getNextValue() if an error occurs.
How can the developer change the code to ensure this behavior?
Answer: C
NEW QUESTION # 14
Refer to the code below:
What is the output after the ode executes successfully?
Answer: A
NEW QUESTION # 15
A developer has code that calculates a restaurant bill, but generates incorrect answers
while testing the code:
function calculateBill ( items ) {
let total = 0;
total += findSubTotal(items);
total += addTax(total);
total += addTip(total);
return total;
}
Which option allows the developer to step into each function execution within calculateBill?
Answer: A
NEW QUESTION # 16
Refer to the code below:
01 new Promise((resolve, reject) = > {
02 const fraction = Math.random();
03 if (fraction > 0.5) reject( ' fraction > 0.5, ' + fraction);
04 resolve(fraction);
05 })
06 .then(() = > console.log( ' resolved ' ))
07 .catch((error) = > console.error(error))
08 .finally(() = > console.log( ' when am I called? ' ));
When does Promise.finally on line 08 get called?
Answer: D
Explanation:
Behavior of Promise.prototype.finally:
* .finally(handler) registers a callback that runs when the promise is settled , meaning:
* Either fulfilled (resolved) , or
* rejected .
Important points:
* The finally callback does not receive the promise's value or error (unlike then and catch).
* It is executed after the promise is settled, but before the resolution value or rejection reason is passed further down the chain.
* It runs in both success and failure paths.
In the given code:
* The promise may either:
* Call reject( ' fraction > 0.5, ' + fraction) if fraction > 0.5, or
* Call resolve(fraction) otherwise.
In both cases:
* If it resolves , .then(() = > console.log( ' resolved ' )) runs, and then .finally(...) is executed.
* If it rejects , .catch((error) = > console.error(error)) runs, and then .finally(...) is executed.
So .finally runs:
* Not just "when rejected".
* Not just "when resolved".
* But whenever the promise is resolved or rejected .
Therefore, the correct choice is:
* D. When resolved or rejected .
NEW QUESTION # 17
......
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