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Salesforce JS-Dev-101 Exam Syllabus Topics:

Section	Objectives
Topic 1: Salesforce Platform Integration	- Working with Salesforce Data Models - Lightning Web Components (LWC) Basics
Topic 2: Asynchronous Programming	- API Calls and Data Fetching - Callbacks, Promises, and Async/Await
Topic 3: JavaScript Fundamentals	- Control Flow and Error Handling - Functions and Scope - Variables, Data Types, and Operators
Topic 4: Object-Oriented JavaScript	- Classes and Inheritance - Objects and Prototypes
Topic 5: Browser and DOM Interaction	- Events and Event Handling - DOM Manipulation

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Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q111-Q116):

NEW QUESTION # 111
A developer executes:
document.cookie;
document.cookie = 'key=John Smith';
What is the behavior?

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

Answer: A

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 Reference (text-only)
Writing document.cookie appends or updates cookies, not replaces them.
document.cookie is both getter and setter for cookie strings.

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: A

Explanation:
Comprehensive and Detailed
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
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. Try{server.start();} catch(error) {console.log('ERROR', error);}
B. Server.on ('error', (error) => {console.log('ERROR', error);});
C. Server.catch ((server) => {console.log('ERROR', error);});
D. Server.error ((server) => {console.log('ERROR', error);});

Answer: B

NEW QUESTION # 114
Universal Containers (UC) just launched anew landing page, but users complain that the website is slow. A developer found some functions any that might cause this problem. To verify this, the developer decides to execute everything and log the time each of these three suspicious functions consumes.
Which function can the developer use to obtain the time spent by every one of the three functions?

A. console.timeStamp ()
B. console. timeLog ()
C. console.getTime ()
D. console.trace()

Answer: B

NEW QUESTION # 115
Refer tothe code below:

What is the value of result after line 10 executes?

A. John undefined
B. John Developer
C. undefined Developer
D. Error: myFather.job is not a function

Answer: B

NEW QUESTION # 116
......

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