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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

Section	Weight	Objectives
Objects, Functions, and Classes	25%	- Higher-order functions - ES6 classes and inheritance - Function declarations and expressions - Modules and decorators - Object creation and manipulation - Variable scope and closures - Prototypal inheritance - Execution flow and context - Arrow functions
Server Side JavaScript	8%	- Node.js fundamentals - Server-side JavaScript implementations - Package management (npm) - CLI commands - Core Node.js modules
Debugging and Error Handling	7%	- Breakpoints and code inspection - Error handling techniques (try/catch/finally) - Custom error types - Console methods for debugging
Testing	7%	- Writing and modifying unit tests - Test effectiveness evaluation - Unit testing concepts - Test coverage and reliability
Asynchronous Programming	13%	- Event loop and execution flow - Async/Await syntax - Promises (creation, chaining, error handling) - Callbacks - Asynchronous patterns for business requirements
Browser and Events	17%	- DOM manipulation - Event handling and listeners - Interacting with forms and user input - Browser Developer Tools usage - Browser-specific APIs - Event propagation (bubbling and capturing)
Variables, Types, and Collections	23%	- JSON parsing and manipulation - Variable declarations and initialization - Truthy and falsy evaluations - Primitive and complex data types - Type coercion and conversion - Arrays and collections - Strings, numbers, and dates

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Salesforce - JavaScript-Developer-I - Salesforce Certified JavaScript Developer (JS-Dev-101) –Trustable Study Materials Review

The Salesforce JavaScript-Developer-I certification exam is one of the hottest and career-oriented certifications in the market. This Salesforce Certified JavaScript Developer (JS-Dev-101) (JavaScript-Developer-I) certification exam has been inspiring beginners and experienced professionals since its beginning. Over this long time period, countless Salesforce Certified JavaScript Developer (JS-Dev-101) (JavaScript-Developer-I) exam candidates have passed their Salesforce Certified JavaScript Developer (JS-Dev-101) (JavaScript-Developer-I) certification exam, and now they are offering their services to the top world brands.

Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q41-Q46):

NEW QUESTION # 41
Refer to the code below:

Why does the function bar have access to variable =?

A. Prototype chain
B. Inner function's scope
C. Outer function's scope
D. Hoisting

Answer: B

NEW QUESTION # 42
Given a value, which three options can a developer use to detect of the value is NaN?
Choose 3 answers

A. Object , is ( value, NaN)
B. Value I== value
C. Value == NaN
D. Value == Number, NaN
E. Number , isNaN(value)

Answer: A,C,E

NEW QUESTION # 43
Refer to the code below:
Let textvalue = '1984';
Which code segment shows a correct way to convert this string to an integer?

A. Let numberValue = textValue. Tointeger ( ) ;
B. Let numberValue = Number(textvalue);
C. Let numberValue = (Number) textvalue;
D. Let numberValue = Integer ( textValue );

Answer: B

NEW QUESTION # 44
Refer to the code below:

Which code executes syhello once, two minutes from now?

A. SetTimeout (sayhello, 120000) ;
B. SetInterval (sayhello, 120000) ;
C. delay (sayhello, 120000) ;
D. SetTimeout (sayhello( ), 120000) ;

Answer: D

NEW QUESTION # 45
Refer to the code below:

A developer import a library that creates a web server. the imported library uses events and callback to start the server.
Which code should be inserted at line 03 to set up an event and start the web server?

A. Server. on ('connet' , (port) => (
Console.log (Listening on' port);
}};
B. server ( (port) => (
Console.log ('Listening on' , port) ;
}};
C. Server .start();
D. server( );

Answer: B

NEW QUESTION # 46
......

This JavaScript-Developer-I certification assists you to put your career on the right track and helps you to achieve your career goals in a short time period. There are several personal and professional benefits that you can gain after passing the Salesforce Certified JavaScript Developer (JS-Dev-101) (JavaScript-Developer-I) certification exam. The prominent JavaScript-Developer-I certification benefits include validation of skills and knowledge, more career opportunities, instant rise in salary, quick promotion, etc.

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