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| Section | Objectives |
|---|---|
| Topic 1: Asynchronous Programming | - Callbacks, Promises, and Async/Await - API Calls and Data Fetching |
| Topic 2: Object-Oriented JavaScript | - Classes and Inheritance - Objects and Prototypes |
| Topic 3: Browser and DOM Interaction | - DOM Manipulation - Events and Event Handling |
| Topic 4: JavaScript Fundamentals | - Variables, Data Types, and Operators - Control Flow and Error Handling - Functions and Scope |
| Topic 5: Salesforce Platform Integration | - Working with Salesforce Data Models - Lightning Web Components (LWC) Basics |
>> New JS-Dev-101 Test Topics <<
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NEW QUESTION # 111
A developer is leading the creation of a new web server for their team that will fulfill API requests from an existing client. The team wants a web server that runs on Node.js, and they want to use the new web framework Minimalist.js. The lead developer wants to advocate for a more seasoned back-end framework that already has a community around it.
Which two frameworks could the lead developer advocate for?
Answer: A,C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract JavaScript Knowledge:
The question is about:
Web frameworks that run on Node.js
Used to build servers and APIs
With established communities.
From the given options:
Angular:
A front-end framework running in the browser, not a Node.js server framework.
Gatsby:
A React-based static site generator; uses Node tooling but is not primarily a Node server framework.
Next / Next.js:
Server-side rendering / full-stack frameworks built on Node.js and React.
Used to create both server-rendered pages and APIs.
They have active communities and are "seasoned" compared to a hypothetical Minimalist.js.
Although typical Node back-end frameworks would include Express.js, Koa, or NestJS, given the options provided, the best fits for server-side frameworks with Node.js and an ecosystem are:
Next (interpreted as Next.js)
Next.js
Thus, the correct pair from the list is B and D.
Concepts: Node.js web frameworks, server-side rendering, community-backed frameworks vs minimal/new frameworks.
________________________________________
NEW QUESTION # 112
01 let obj = {
02 fool 1,
03 bari 2
04 )
05 let output = [7#
08 output .push (something);
09 )
10
11 conssie.tog (output):
What is the outpouf tlin e 117
Answer: C
NEW QUESTION # 113
A developer wants to use a module named universalContainerslib and then call functions from it. How should a developer import every function from the module and then call the functions foo and bar?
Answer: B
Explanation:
import * as lib from '...' imports all named exports from the module into the namespace object lib.
You then call:
lib.foo();
lib.bar();
Option D correctly imports only foo and bar, not every function. The question explicitly says "import every function... and then call foo and bar", so A best matches.
Options B and C are invalid syntax or reference the wrong identifier.
________________________________________
NEW QUESTION # 114
Given the JavaScript below:
01 function filterDOM (searchString) {
02 const parsedSearchString = searchString && searchString.toLowerCase() ;
03 document.quesrySelectorAll(' .account' ) . forEach(account => (
04 const accountName = account.innerHTML.toLOwerCase();
05 account. Style.display = accountName.includes(parsedSearchString) ? /*Insert code*/;
06 )};
07 }
Which code should replace the placeholder comment on line 05 to hide accounts that do not match thesearch string?
Answer: B
NEW QUESTION # 115
A developer has two ways to write a function:
Option A:
01 function Monster() {
02 this.growl = () => {
03 console.log("Grr!");
04 }
05 }
Option B:
01 function Monster() {};
02 Monster.prototype.growl = () => {
03 console.log("Grr!");
04 }
After deciding on an option, the developer creates 1000 monster objects. How many growl methods are created with Option A and Option B?
Answer: B
Explanation:
Option A:
this.growl = () => { ... } inside the constructor creates a new function per instance.
For 1000 new Monster(), you get 1000 distinct growl functions, each stored on the instance itself.
Option B:
Monster.prototype.growl = () => { ... } attaches growl to the prototype.
All instances share the same single growl function via the prototype chain.
For 1000 instances, only 1 growl method exists in memory.
So: Option A โ 1000; Option B โ 1.
NEW QUESTION # 116
......
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