BONUS!!! Download part of DumpsFree JS-Dev-101 dumps for free: https://drive.google.com/open?id=1NyvX894p7dpIjlgEgxy35VTN0kV-bmjy
Salesforce JS-Dev-101 certification exams are a great way to analyze and evaluate the skills of a candidate effectively. Big companies are always on the lookout for capable candidates. You need to pass the JS-Dev-101 Certification Exam to become a certified professional. This task is considerably tough for unprepared candidates however with the right JS-Dev-101 prep material there remains no chance of failure.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Testing | 7% | - Unit test structure and effectiveness - Test coverage and improvement |
| Topic 2: Asynchronous Programming | 13% | - Event loop and execution flow - Callbacks, promises, async/await |
| Topic 3: Variables, Types, and Collections | 23% | - Data types, type coercion, truthy/falsy values - Strings, numbers, dates, arrays and methods - JSON parsing and manipulation - Variable declaration and scope |
| Topic 4: Debugging and Error Handling | 7% | - Console usage, breakpoints and debugging techniques - Error types and handling strategies |
| Topic 5: Server Side JavaScript | 8% | - Node.js fundamentals and core modules - Package management and CLI tools |
| Topic 6: Objects, Functions, and Classes | 25% | - ES6 classes, inheritance, modules, decorators - Function types, scope, closures, arrow functions - Object creation, properties, prototypes |
| Topic 7: Browser and Events | 17% | - Browser APIs and developer tools - DOM selection and manipulation - Event handling, propagation, listeners |
>> JS-Dev-101 Exam Dumps Pdf <<
No doubt the Salesforce JS-Dev-101 certification exam is one of the most difficult DumpsFree certification exams in the modern DumpsFree world. This JS-Dev-101 exam always gives a tough time to their candidates. The DumpsFree understands this challenge and offers real, valid, and top-notch Salesforce JS-Dev-101 Exam Dumps in three different formats. All these three JS-Dev-101 exam questions formats are easy to use and compatible with all devices, operating systems, and web browsers.
NEW QUESTION # 28
Refer to the code below:
console.log(''start);
Promise.resolve('Success') .then(function(value){
console.log('Success');
});
console.log('End');
What is the output after the code executes successfully?
Answer: C
NEW QUESTION # 29
Refer to the following code:
01 class Ship {
02 constructor(size) {
03 this.size = size;
04 }
05 }
06
07 class FishingBoat extends Ship {
08 constructor(size, capacity){
09 //Missing code
10 this.capacity = capacity;
11 }
12 displayCapacity() {
13 console.log('The boat has a capacity of ${this.capacity} people.');
14 }
15 }
16
17 let myBoat = new FishingBoat('medium', 10);
18 myBoat.displayCapacity();
Which statement should be added to line 09 for the code to display
The boat has a capacity of 10 people?
Answer: D
Explanation:
Comprehensive and Detailed Explanation From JavaScript Knowledge:
FishingBoat extends Ship, so it is a subclass. In ES6 classes:
When you define a constructor in a subclass, you must call super(...) before accessing this.
super(size) calls the parent class (Ship) constructor, which sets this.size = size.
So the correct constructor is:
class FishingBoat extends Ship {
constructor(size, capacity) {
super(size); // line 09
this.capacity = capacity;
}
displayCapacity() {
console.log(`The boat has a capacity of ${this.capacity} people.`);
}
}
Why others are incorrect:
B . ship.size = size;
ship is not defined; this would cause a ReferenceError.
C . super.size = size;
super is not an instance; you must call super(...) as a function to invoke the parent constructor.
D . this.size = size;
In a subclass constructor, you must call super() before using this, otherwise you get a ReferenceError. Also this bypasses the parent constructor logic.
Relevant concepts: ES6 class inheritance, extends, super() in subclass constructors, this initialization rules.
________________________________________
NEW QUESTION # 30
Universal Containers recently launched its new landing page to host a crowd-funding campaign. The page uses an external library to display some third-party ads. Once the page is fully loaded, it creates more than 50 new HTML items placed randomly insidethe DOM, like the one in the code below:
All the elements includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.
Answer: B
NEW QUESTION # 31
Refer to the code:
Given the code above, which three properties are set for pet1? Choose 3 answers
Answer: B,C,E
NEW QUESTION # 32
A developer needs to debug a Node.js web server because a runtime error keeps occurring at one of the endpoints.
The developer wants to test the endpoint on a local machine and make the request against a local server to look at the behavior. In the source code, the server.js file will start the server. The developer wants to debug the Node.js server only using the terminal.
Which command can the developer use to open the CLI debugger in their current terminal window?
(With corrected typing errors: node_inspect โ node inspect, node_start_inspect โ node start inspect.)
Answer: A
Explanation:
Node.js includes a built-in command-line (CLI) debugger. To use it directly in the terminal, the standard command is:
node inspect server.js
This:
Starts server.js under the Node.js inspector.
Opens the CLI debugger right in the terminal window where you ran the command.
Lets you interactively:
Step through code
Set breakpoints
Inspect variables
Continue execution, etc.
Why B is correct:
Option B (corrected to node inspect server.js) is exactly the standard Node.js command to run a script under the CLI debugger in the current terminal.
It does not rely on any external GUI tools.
You stay entirely in the terminal to debug.
Why the other options are incorrect:
A . node start inspect server.js
There is no start subcommand like this in standard Node.js CLI.
This is not a valid Node.js debugging command.
C . node server.js --inspect
This starts Node.js with the Inspector protocol enabled and is typically used to connect external tools like Chrome DevTools or VS Code.
It does not open the CLI debugger in the current terminal. Instead, it opens a debugging port that other tools attach to.
The question specifically says "only using the terminal" and "open the CLI debugger in their current terminal window", which points to node inspect, not --inspect.
D . node -i server.js
-i starts Node in interactive REPL mode, optionally after running a script.
This is for an interactive shell, not the Node debugger.
It does not provide breakpoint/step/next/continue debugging features like the CLI debugger.
Therefore, the only option that opens the Node.js CLI debugger in the current terminal is:
Answe r: B
JavaScript / Node.js knowledge / Study Guide references (concept names only, no links):
Node.js CLI debugger: node inspect <script>
Node.js inspector protocol: node --inspect
Difference between CLI debugger and DevTools-based debugging
Node.js command-line options and subcommands
NEW QUESTION # 33
......
We have free demo of our JS-Dev-101 exam questions offering the latest catalogue and brief contents for your information on the website, if you do not have thorough understanding of our JS-Dev-101 study materials. Many exam candidates build long-term relation with our company on the basis of our high quality JS-Dev-101 Guide engine. And our JS-Dev-101 training braindumps have became their best assistant on the way to pass the exam.
Dumps JS-Dev-101 Cost: https://www.dumpsfree.com/JS-Dev-101-valid-exam.html
P.S. Free 2026 Salesforce JS-Dev-101 dumps are available on Google Drive shared by DumpsFree: https://drive.google.com/open?id=1NyvX894p7dpIjlgEgxy35VTN0kV-bmjy