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Salesforce JS-Dev-101 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Debugging and Error Handling	7%	- Console usage, breakpoints and debugging techniques - Error types and handling strategies
Topic 2: Variables, Types, and Collections	23%	- Strings, numbers, dates, arrays and methods - Variable declaration and scope - Data types, type coercion, truthy/falsy values - JSON parsing and manipulation
Topic 3: Server Side JavaScript	8%	- Package management and CLI tools - Node.js fundamentals and core modules
Topic 4: Asynchronous Programming	13%	- Callbacks, promises, async/await - Event loop and execution flow
Topic 5: Objects, Functions, and Classes	25%	- Function types, scope, closures, arrow functions - Object creation, properties, prototypes - ES6 classes, inheritance, modules, decorators
Topic 6: Testing	7%	- Unit test structure and effectiveness - Test coverage and improvement
Topic 7: Browser and Events	17%	- Event handling, propagation, listeners - Browser APIs and developer tools - DOM selection and manipulation

>> JS-Dev-101 Associate Level Exam <<

100% Pass Quiz Authoritative Salesforce - JS-Dev-101 - Salesforce Certified JavaScript Developer - Multiple Choice Associate Level Exam

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Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q87-Q92):

NEW QUESTION # 87
A developer executes:
document.cookie;
document.cookie = 'key=John Smith';
What is the behavior?

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

Answer: D

Explanation:
________________________________________
Comprehensive and Detailed Explanation From Exact Extract JavaScript Knowledge 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 # 88
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 teamhas already built using HTML, CSS, and JavaScript.
Which three benefits of Node.js can the developer use to persuade their manager?
Choose 3 answers:

A. Executes server-side JavaScript code to avoid learning a new language.
B. Performs a static analysis on code before execution to look for runtime errors.
C. Ensures stabilitywith one major release every few years.
D. Uses non-blocking functionality for performant requesthandling .
E. Installs with its own package manager to install and manage third-party libraries.

Answer: B,D,E

NEW QUESTION # 89
A developer tries to retrieve all cookies, then sets a certain key value pair in the cookie. These statements are used:

What is the behavior?

A. Cookies are read and the key value is set, and all cookies are wiped.
B. A Cookies are read andthe key value is set, the remaining cookies are unaffected.
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, but the key value is not set because the value is not URL encoded.

Answer: B

NEW QUESTION # 90
A developer at Universal Containers is creating their new landing pagebased on HTML, CSS, and JavaScript. The website includes multiple external resources that are loaded when the page is opened.
To ensure that visitors have a good experience, a script named personalizeWebsiteContent needs to be executed when the webpage isloaded and there is no need to wait for the resources to be available.
Which statement should be used to call personalizeWebsiteContent based on the above business requirement?

A. windows,addEventListener('onload', personalizeWebsiteContent);
B. windows,addEventListener('load', personalizeWebsiteContent);
C. windows,addEventListener('DOMContent Loaded ', personalizeWebsiteContent);
D. windows,addEventListener('onDOMCContentLoaded', personalizeWebsiteContent);

Answer: B

NEW QUESTION # 91
A developer is setting up a Node.js server and is creating a script at the root of the source code, index.js, that will start the server when executed. The developer declares a variable that needs the folder location that the code executes from.
Which global variable can be used in the script?

A. __filename
B. window.location
C. this.path
D. __dirname

Answer: D

Explanation:
Comprehensive and Detailed Explanation From Exact Extract JavaScript Knowledge:
In Node.js:
__filename is the absolute path to the current file (including file name).
__dirname is the absolute path to the directory that contains the current file.
window.location is a browser-only global, not available in Node.js.
this.path is not a standard Node.js global for path information.
The requirement is:
"the folder location that the code executes from."
That is exactly what __dirname provides.
So the correct choice is __dirname.
Concepts: Node.js globals, __filename, __dirname, Node vs browser environment.
________________________________________

NEW QUESTION # 92
......

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