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| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I |
| Exam Number: | JS-Dev-001 |
| Related Certifications: | Salesforce Certified Platform Developer I Salesforce Certified JavaScript Developer I Salesforce Certified Platform App Builder |
| Available Languages: | English |
| Exam Price: | USD 200 (may vary by region/tax) |
| Exam Format: | Multiple Choice, Multiple Select |
| Real Exam Qty: | 60 |
| Passing Score: | 65% |
| Exam Duration: | 105 minutes |
| Certificate Validity Period: | 1 year (maintenance required via Salesforce certification maintenance modules) |
| Recommended Training: | Salesforce Developer Learning Paths Salesforce Trailhead JavaScript Developer I Prep |
| Exam Registration: | Salesforce Certification Registration (Webassessor) Salesforce Credentials Page |
| Sample Questions: | Salesforce JavaScript-Developer-I Sample Questions |
| Exam Way: | Online proctored or onsite testing via Kryterion Webassessor |
| Pre Condition: | No formal prerequisites, but familiarity with JavaScript and Salesforce platform development is strongly recommended. |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/javascriptdeveloper1 |
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Salesforce JavaScript-Developer-I exam is designed to test the skills and knowledge of developers who specialize in JavaScript development on the Salesforce platform. Salesforce Certified JavaScript Developer (JS-Dev-101) certification is perfect for developers who want to demonstrate their expertise in building custom applications using JavaScript on the Salesforce platform. JavaScript-Developer-I Exam covers a variety of topics, including Apex, Visualforce, and Lightning Web Components, and is designed to test a developer's ability to design, develop, and maintain custom applications on the Salesforce platform.
NEW QUESTION # 18
Considering type coercion, What does the following expression evaluate to?
True + '13 ' + NaN
Answer: A
NEW QUESTION # 19
A developer needs to test this function:
01 const sum3 = (arr) => (
02 if (!arr.length) return 0,
03 if (arr.length === 1) return arr[0],
04 if (arr.length === 2) return arr[0] + arr[1],
05 return arr[0] + arr[1] + arr[2],
06 );
Which two assert statements are valid tests for the function?
Choose 2 answers
Answer: A,D
NEW QUESTION # 20
Refer to the code below:
01 let first = ' Who ' ;
02 let second = ' What ' ;
03 try {
04 try {
05 throw new Error( ' Sad trombone ' );
06 } catch (err) {
07 first = ' Why ' ;
08 throw err;
09 } finally {
10 second = ' When ' ;
11 }
12 } catch (err) {
13 second = ' Where ' ;
14 }
What are the values for first and second once the code executes?
Answer: C
Explanation:
Initial values:
* first = ' Who '
* second = ' What '
Execution:
Inner try/catch/finally:
* Line 05: throw new Error( ' Sad trombone ' );
* Control goes to the inner catch.
* Inner catch (lines 06-08):
catch (err) {
first = ' Why ' ;
throw err;
}
* first is set to ' Why ' .
* The error is rethrown.
* Inner finally (lines 09-11):
finally {
second = ' When ' ;
}
* finally runs whether or not there was an error.
* second becomes ' When ' .
After inner finally, the rethrown error continues to propagate to the outer catch.
Outer catch (lines 12-14):
} catch (err) {
second = ' Where ' ;
}
* Because the inner try rethrew, the outer catch runs.
* It sets second = ' Where ' .
Final values:
* first was changed to ' Why ' in the inner catch and never changed again.
* second became ' When ' in the inner finally, and then ' Where ' in the outer catch.
So:
* first is ' Why '
* second is ' Where '
Option B is correct.
Concepts: nested try/catch/finally, rethrowing errors, order of execution for catch vs finally, variable mutation through error propagation.
NEW QUESTION # 21
Refer to code below:
Let a ='a';
Let b;
// b = a;
console.log(b);
What is displayed when the code executes?
Answer: B
NEW QUESTION # 22
developer removes the HTML class attribute from the checkout button, so now it is simply:
<button>Checkout</button>.
There is a test to verify the existence of the checkout button, however it looks for a button with class= "blue". The test fails because no such button is found.
Which type of test category describes this test?
Answer: D
NEW QUESTION # 23
......
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