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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

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

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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q111-Q116):

NEW QUESTION # 111
A developer wants to create an object from a function in the browser using the code below.

What happens due to the lack of the mm keyword on line 02?

A. The m variable is assigned the correct object.
B. window.m Is assigned the correct object.
C. window.name is assigned to 'hello' and the variable = remains undefined.
D. The m variable is assigned the correct object but this.name remains undefined.

Answer: C

NEW QUESTION # 112
Given the following code:
let x = ( ' 15 ' + 10) * 2;
What is the value of x?

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

Answer: C

Explanation:
Comprehensive and Detailed Explanation:
Evaluate step by step:
* ' 15 ' + 10
* + with a string operand performs string concatenation.
* 10 is coerced to ' 10 ' .
* Result: ' 1510 ' .
* ' 1510 ' * 2
* * always performs numeric multiplication.
* ' 1510 ' is converted to the number 1510.
* 1510 * 2 = 3020.
So x is 3020.

NEW QUESTION # 113
A developer wants to use a module called DataPrettyPrint. This module exports one default function called printDate ().
How can a developer import and use the printDate() function?
A)

B)

C)

D)

A. Option C
B. Option B
C. Option D
D. Option A

Answer: B

NEW QUESTION # 114
Teams at Universal Containers (CU) work on multiple JavaScript projects at the same time. UC us thinking about reusability and how each team can benefit from the work of others.
Going open-source or public is not an option at this time.
Which option is available to UC with npm?

A. Private packages can be scoped, and scopes can be associated to a private registries.
B. Private registries are not supported by spm, but packages can be installed vis URL.
C. Private register are not supported by npm, but packages can be installed via git.
D. Private packages are not supported, but they can use another package manager like yarm.

Answer: D

NEW QUESTION # 115
A developer executes:
document.cookie;
document.cookie = ' key=John Smith ' ;
What is the behavior?

A. Cookies are not read because line 01 should be document.cookies, but the key value is set and all cookies are wiped.
B. Cookies are read and the key value is set, and all cookies are wiped.
C. Cookies are read and the key value is set, the remaining cookies are unaffected.
D. Cookies are read, but the key value is not set because the value is not URL encoded.

Answer: C

Explanation:
* document.cookie retrieves the cookie string.
* Setting document.cookie = ' key=John Smith ' adds or updates only that one cookie.
Important details:
* Writing to document.cookie does not overwrite all cookies .
* The browser does not require URL encoding , though it is recommended. Non-encoded spaces are allowed and automatically handled.
* document.cookies does not exist; the correct property is document.cookie.
Therefore, the correct behavior:
* Cookies are read.
* A new cookie key=John Smith is set.
* Existing cookies remain.
JavaScript Knowledge References (text-only)
* Writing document.cookie appends or updates cookies, not replaces them.
* document.cookie is both getter and setter for cookie strings.

NEW QUESTION # 116
......

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