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Salesforce JavaScript-Developer-I Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Server-Side JavaScript	8%	- Module system and require/import - Core Node.js modules - Node.js fundamentals and runtime - Command-line tools and scripts
Topic 2: Objects, Functions, and Classes	25%	- Decorators and advanced function patterns - Function definitions, parameters, and scope - Class syntax, inheritance, and prototypes - Object creation, properties, and methods - Modules and imports/exports - Closures and execution context
Topic 3: Asynchronous Programming	13%	- Promises and chaining - Async/await syntax - Event loop and micro/macro tasks - Fetch API and HTTP requests - Callbacks and callback hell
Topic 4: Debugging and Error Handling	7%	- Console methods and logging - Defensive programming practices - Debugging tools and breakpoints - Error types and exception handling
Topic 5: Testing	7%	- Test doubles and mocks - Unit testing concepts - Code coverage and best practices - Testing frameworks and assertions
Topic 6: Variables, Types, and Collections	23%	- Truthy and falsy values - Array methods and data manipulation - Type coercion and conversion rules - JSON parsing and usage - Working with strings, numbers, dates, and booleans - Variable declaration and initialization
Topic 7: Browsers and Events	17%	- Browser APIs and Web Storage - Document Object Model (DOM) manipulation - Event handling, propagation, and delegation - Window and document object properties - Script loading and execution order

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Salesforce Certified JavaScript Developer (JS-Dev-101) Sample Questions (Q14-Q19):

NEW QUESTION # 14
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.clicked
B. e.nodeTarget ==this
C. event.target.nodeName == 'BUTTON'
D. button.addEventListener('click')

Answer: C

NEW QUESTION # 15
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 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. A 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

NEW QUESTION # 16
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. 0
B. 1
C. 50Uncaught TypeError: saleItem,desrcription is not a function5080
D. 5080Uncaught ReferenceError:this,discount is undefined72

Answer: A

NEW QUESTION # 17
Refer to the code below:

Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a specific element, myElement on the page had been clicked?

Answer:

Explanation:
event.target.id =='myElement'

NEW QUESTION # 18
Refer to the code below:

What is result of the code block?

A. The console logs flag' and then an error is thrown.
B. The console logs 'flag' and another flag',
C. The console logs only 'flag',
D. An error is thrown.

Answer: A

NEW QUESTION # 19
......

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