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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

SectionObjectives
Topic 1: Testing and Debugging- Debugging techniques and tools
- Unit testing principles
Topic 2: Browser and DOM Interaction- Event handling and propagation
- Browser APIs (fetch, storage, timers)
- DOM manipulation and traversal
Topic 3: Asynchronous JavaScript- Promises and async/await
- Event loop and concurrency model
- Error handling in async workflows
Topic 4: JavaScript Language Fundamentals- ES6+ syntax and features
- Data types, variables, and operators
- Functions, scope, and closures
Topic 5: Salesforce Platform Integration- Calling Apex methods from JavaScript
- Security considerations in Salesforce JavaScript
- Lightning Web Components (LWC) JavaScript usage

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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q98-Q103):

NEW QUESTION # 98
developer is trying to convince management that their team will benefit from using
Node.js for a backend server that they are going to create. The server will be a web server that
handles API requests from a website that the team has already built using HTML, CSS, and
JavaScript.
Which three benefits of Node.js can the developer use to persuade their manager?
Choose 3 answers:

Answer: B,D,E


NEW QUESTION # 99
A developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of the first three numbers in the array, and the test passes.
A different developer made changes to the behavior of sum3 to instead sum only the first two numbers present in the array.

Which two results occur when running this test on the updated sum3 function?
Choose 2 answers

Answer: A,D


NEW QUESTION # 100
Refer to the code below:
01 < html lang= " en " >
02 < table onclick= " console.log( ' Table log ' ); " >
03 < tr id= " row1 " >
04 < td > Click me! < /td >
05 < /tr >
06 < /table >
07 < script >
08 function printMessage(event) {
09 console.log( ' Row log ' );
10 event.stopPropagation();
11 }
12
13 let elem = document.getElementById( ' row1 ' );
14 elem.addEventListener( ' click ' , printMessage, false);
15 < /script >
16 < /html >
Which code change should be done for the console to log the following when " Click me! " is clicked?
Row log
Table log

Answer: B

Explanation:
Current behavior:
* Clicking < td > triggers the click event on row1, then bubbles up to < table > .
* printMessage runs, logs " Row log " , then event.stopPropagation() stops the event from bubbling to the table.
* So " Table log " never appears.
To allow the table's inline onclick to run after the row handler:
* Remove the propagation stop:
function printMessage(event) {
console.log( ' Row log ' );
// event.stopPropagation(); // remove this
}
Now the event bubbles:
* printMessage logs " Row log " .
* The table's onclick runs, logging " Table log " .
Option A only changes capture/bubble phase but still stops propagation. C does nothing meaningful (stopPropagation takes no arguments). B removes the row handler entirely.


NEW QUESTION # 101
Refer to the code below:
const event = new CustomEvent(
//Missing Code
);
obj.dispatchEvent(event);
A developer needs to dispatch a custom event called update to send information about recordId.
Which two options could a developer insert at the placeholder in line 02 to achieve this?
Choose 2 answers

Answer: B,C

Explanation:
}
}


NEW QUESTION # 102
Refer to the code below:

What is the value of result when the code executes?

Answer: C


NEW QUESTION # 103
......

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