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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

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

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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q13-Q18):

NEW QUESTION # 13
Given the following code:

What is the logged by the first four log statements?

A. 0 1 2 3
B. 0 1 1 2
C. 0 0 1 2
D. 0 1 2 2

Answer: B

NEW QUESTION # 14
developer wants to use a module named universalContainersLib and them call functions from it.
How should a developer import every function from the module and then call the fuctions foo and bar ?

A. import * ad lib from '/path/universalContainersLib.js';
lib.foo();
lib.bar();
B. import * from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar();
C. import (foo, bar) from '/path/universalContainersLib.js';
foo();
bar();
D. import all from '/path/universalContaineraLib.js';
universalContainersLib.foo();
universalContainersLib.bar();

Answer: A

NEW QUESTION # 15
Refer to the following array:
Let arr1 = [ 1, 2, 3, 4, 5 ];

Which two lines of code result in a second array, arr2 being created such that arr2 is not a reference to arr1?

A. Let arr2 = arr1.slice(0, 5);
B. Let arr2 = Array.from(arr1);
C. Let arr2 = arr1.sort();
D. Let arr2 = arr1;

Answer: A,B

NEW QUESTION # 16
Refer to the HTML below:

Which JavaScript statement results in changing " The Lion."?

A. document.querySelector('$main li:nth-child(2)'),innerHTML = " The Lion. ';
B. document.querySelector('$main li.Tony').innerHTML = '" The Lion ';
C. document.querySelector('$main li:second-child').innerHTML = "The Lion ';
D. document.querySelectorAll('$main $TONY').innerHTML = '" The Lion

Answer: D

NEW QUESTION # 17
Which statement parses successfully?

A. JSON.parse ('' 'foo'' ');
B. JSON.parse (''foo '');
C. JSON.parse ('foo ');
D. JSON.parse ('' 'foo' '');

Answer: B

NEW QUESTION # 18
......

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