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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

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

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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q74-Q79):

NEW QUESTION # 74
There is a new requirement for a developer to implement a currPrice method that will return the current price of the item or sales..

What is the output when executing the code above

A. 50
80
50
72
B. 50
80
72
C. 50
Uncaught TypeError: saleItem,desrcription is not a function
50
80
D. 50
80
Uncaught Reference Error:this,discount is undefined
72

Answer: A

NEW QUESTION # 75
Refer to code below:
Let a ='a';
Let b;
// b = a;
console.log(b);
What is displayed when the code executes?

A. Null
B. A
C. Undefined
D. ReferenceError: b is not defined

Answer: C

NEW QUESTION # 76
Given the code below:

What is logged to the console'

A. 1 2 5 3 4
B. 1 2 3 4 5
C. 2 5 3 4 1
D. 2 5 1 3 4

Answer: C

NEW QUESTION # 77
Given the following code:
document.body.addEventListener(' click ', (event) => {
if (/* CODE REPLACEMENT HERE */) {
console.log('button clicked!');
)
});
Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a button on page is clicked?

A. event.target.nodeName == 'BUTTON'
B. button.addEventListener('click')
C. Event.clicked
D. e.nodeTarget ==this

Answer: A

NEW QUESTION # 78
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 team has 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. Uses non-blocking functionality for performant request handling .
B. Executes server-side JavaScript code to avoid learning a new language.
C. Performs a static analysis on code before execution to look for runtime errors.
D. Ensures stability with one major release every few years.
E. Installs with its own package manager to install and manage third-party libraries.

Answer: A,C,E

NEW QUESTION # 79
......

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