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Salesforce JavaScript-Developer-I (Salesforce Certified JavaScript Developer I) Exam is a certification exam that is designed to test the skills and knowledge of developers who use JavaScript in the Salesforce platform. Salesforce Certified JavaScript Developer (JS-Dev-101) certification is ideal for developers who are looking to demonstrate their expertise in using JavaScript to build custom applications, automate business processes, and enhance the user experience in Salesforce.

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Salesforce JavaScript-Developer-I certification is ideal for developers who are looking to build their skills in developing custom applications on the Salesforce platform using JavaScript. Salesforce Certified JavaScript Developer (JS-Dev-101) certification validates the candidate's knowledge of Salesforce development best practices, including how to design and implement custom user interfaces, create custom business logic using Apex, and integrate with external systems using REST and SOAP APIs.

Salesforce Certified JavaScript Developer I certification exam is a challenging assessment that evaluates a developer’s knowledge and skills in building custom applications using the Salesforce Lightning platform. JavaScript-Developer-I Exam Tests a developer’s ability to build custom user interfaces, create custom Lightning components, and use Apex and JavaScript to build custom logic and automation. Salesforce Certified JavaScript Developer (JS-Dev-101) certification is designed for developers who have experience with JavaScript, HTML, and CSS and are familiar with Salesforce’s Lightning Component framework.

Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q132-Q137):

NEW QUESTION # 132
Refer to the code below:
01 let car1 = new promise((_, reject) =>
02 setTimeout(reject, 2000, "Car 1 crashed in"));
03 let car2 = new Promise(resolve => setTimeout(resolve, 1500, "Car 2
completed"));
04 let car3 = new Promise(resolve => setTimeout (resolve, 3000, "Car 3
Completed"));
05 Promise.race([car1, car2, car3])
06 .then(value => (
07 let result = $(value) the race. `;
08 ))
09 .catch( arr => (
10 console.log("Race is cancelled.", err);
11 ));
What is the value of result when Promise.race executes?

A. Race is cancelled.
B. Car 2 completed the race.
C. Car 1 crashed in the race.
D. Car 3 completed the race.

Answer: B

NEW QUESTION # 133
Refer to the following code that imports a module named utils:
import (foo, bar) from '/path/Utils.js';
foo() ;
bar() ;
Which two implementations of Utils.js export foo and bar such that the code above runs without
error?
Choose 2 answers

A. // FooUtils.js and BarUtils.js exist
Import (foo) from '/path/FooUtils.js';
Import (boo) from ' /path/NarUtils.js';
B. Export default class {
foo() { return 'foo' ; }
bar() { return 'bar' ; }
}
C. const foo = () => { return 'foo' ; }
const bar = () => { return 'bar' ; }
export { bar, foo }
D. const foo = () => { return 'foo';}
const bar = () => {return 'bar'; }
Export default foo, bar;

Answer: B,C

NEW QUESTION # 134
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?

A. first is Why and second is When.
B. first is Who and second is When.
C. first is Why and second is Where.
D. first is Who and second is Where.

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 # 135
A developer at Universal Containers creates a new landing page based on HTML, CSS, and JavaScript TO ensure that visitors have a good experience, a script named personaliseContext needs to be executed when the webpage is fully loaded (HTML content and all related files ), in order to do some custom initialization.
Which statement should be used to call personalizeWebsiteContent based on the above business requirement?

A. document.addEventListener(''onDOMContextLoaded', personalizeWebsiteContext);
B. window.addEventListener('load',personalizeWebsiteContext);
C. Document.addEventListener('''DOMContextLoaded' , personalizeWebsiteContext);
D. window.addEventListener('onload', personalizeWebsiteContext);

Answer: B

NEW QUESTION # 136
developer creates a new web server that uses Node.js. It imports a server library that uses events and callbacks for handling server functionality.
The server library is imported with require and is made available to the code by a variable named server. The developer wants to log any issues that the server has while booting up.
Given the code and the information thedeveloper has, which code logs an error at boost with an event?

A. Server.on ('error', (error) => {console.log('ERROR', error);});
B. Server.error ((server) => {console.log('ERROR', error);});
C. Server.catch ((server) => {console.log('ERROR', error);});
D. Try{server.start();} catch(error) {console.log('ERROR', error);}

Answer: A

NEW QUESTION # 137
......

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