P.S. Free & New JavaScript-Developer-I dumps are available on Google Drive shared by EduDump: https://drive.google.com/open?id=1nE4csS9MM27TC72jv1eN1oQTkfgjE5dl
Even if you are laid off by your company, there is no point in thinking that you couldn't make it and that it's the end of the road. No, it is not and you have a world full of opportunities till you are breathing. You can easily pass the Salesforce Certified JavaScript Developer (JS-Dev-101) (JavaScript-Developer-I) certification exam. This Salesforce Certified JavaScript Developer (JS-Dev-101) (JavaScript-Developer-I) exam credential will help you get your dream job and show your expertise to the world around you. So, don't feel it with a heavy heart, but stand again, hold to your confidence, and think about how you can prepare successfully for the JavaScript-Developer-I test.
| Section | Weight | Objectives |
|---|---|---|
| Browsers and Events | 17% | - Document Object Model (DOM) manipulation - Browser APIs and Web Storage - Script loading and execution order - Event handling, propagation, and delegation - Window and document object properties |
| Debugging and Error Handling | 7% | - Error types and exception handling - Debugging tools and breakpoints - Defensive programming practices - Console methods and logging |
| Objects, Functions, and Classes | 25% | - Closures and execution context - Function definitions, parameters, and scope - Decorators and advanced function patterns - Modules and imports/exports - Class syntax, inheritance, and prototypes - Object creation, properties, and methods |
| Testing | 7% | - Test doubles and mocks - Testing frameworks and assertions - Code coverage and best practices - Unit testing concepts |
| Asynchronous Programming | 13% | - Async/await syntax - Fetch API and HTTP requests - Promises and chaining - Callbacks and callback hell - Event loop and micro/macro tasks |
| Server-Side JavaScript | 8% | - Core Node.js modules - Command-line tools and scripts - Module system and require/import - Node.js fundamentals and runtime |
| Variables, Types, and Collections | 23% | - JSON parsing and usage - Type coercion and conversion rules - Working with strings, numbers, dates, and booleans - Variable declaration and initialization - Truthy and falsy values - Array methods and data manipulation |
>> Valid JavaScript-Developer-I Test Cram <<
We have brought in an experienced team of experts to develop our JavaScript-Developer-I study materials, which are close to the exam syllabus. With the help of our JavaScript-Developer-I practice guide, you don't have to search all kinds of data, because our products are enough to meet your needs. And our JavaScript-Developer-I leanring guide can help you get all of the keypoints and information that you need to make sure that you will pass the exam.
NEW QUESTION # 52
Given the code:
01 function GameConsole(name) {
02 this.name = name;
03 }
04
05 GameConsole.prototype.load = function(gamename) {
06 console.log( ' ${this.name} is loading a game: ${gamename}.... ' );
07 }
08
09 function Console16bit(name) {
10 GameConsole.call(this, name);
11 }
12
13 Console16bit.prototype = Object.create(GameConsole.prototype);
14
15 // insert code here
16 console.log( ' ${this.name} is loading a cartridge game: ${gamename}.... ' );
17 }
18
19 const console16bit = new Console16bit( ' SNEGeneziz ' );
20 console16bit.load( ' Super Monic 3x Force ' );
What should a developer insert at line 15?
Answer: A
Explanation:
A subclass created by:
Console16bit.prototype = Object.create(GameConsole.prototype);
inherits all prototype methods from GameConsole, including load.
To override the inherited method, the correct syntax is to assign a new function to the method name on the prototype:
Console16bit.prototype.load = function(gamename) {
console.log(`${this.name} is loading a cartridge game: ${gamename}....`);
};
Why the other options are wrong:
* A assigns something to the constructor function itself, not to the prototype method. Invalid.
* B attempts to call a function in the left-hand side of an assignment; invalid syntax.
* C also uses invalid syntax-prototype methods cannot be defined this way.
* D is the correct definition of a prototype method override.
JavaScript Knowledge References (text-only)
* Methods are overridden by assigning functions to Subclass.prototype.methodName.
* Object.create() establishes prototype inheritance.
* Constructor functions require prototype method attachment using assignment syntax.
NEW QUESTION # 53
A developer is creating a simple webpage with a button. When a user clicks this button for the first time, a message is displayed.
The developer wrote the JavaScript code below, but something is missing. The message gets displayed every time a user clicks the button, instead of just the first time.
01 function listen(event) {
02 alert ( 'Hey! I am John Doe') ;
03 button.addEventListener ('click', listen);
Which two code lines make this code work as required?
Choose 2 answers
Answer: A,C
NEW QUESTION # 54
Given the following code:
01 counter = 0;
02 const logCounter = () = > {
03 console.log(counter);
04 };
05 logCounter();
06 setTimeout(logCounter, 2100);
07 setInterval(() = > {
08 counter++;
09 logCounter();
10 }, 1000);
What will be the first four numbers logged?
Answer: B
Explanation:
We need to track the value of counter and the timing of each call to logCounter.
Initial state:
* Line 01: counter = 0;
* Line 02-04: logCounter logs the current value of counter.
Execution order and timing:
* Line 05: logCounter();
* Called immediately at time t = 0 ms.
* counter is 0.
* First log: 0.
* Line 06: setTimeout(logCounter, 2100);
* Schedules logCounter to run once after 2100 ms.
* No log yet at this line.
* Line 07-10: setInterval(() = > { counter++; logCounter(); }, 1000);
* Schedules a repeating callback every 1000 ms (1 second).
* First interval callback runs at t # 1000 ms.
Now follow the timeline:
* t = 0 ms:
* logCounter(); from line 05
* Logs: 0
* t = 1000 ms (first interval execution):
* counter++; # counter goes from 0 to 1.
* logCounter(); logs 1.
* t = 2000 ms (second interval execution):
* counter++; # counter goes from 1 to 2.
* logCounter(); logs 2.
* t = 2100 ms (timeout from line 06):
* logCounter(); runs again.
* counter is still 2 (next setInterval will be at t = 3000 ms).
* Logs 2.
So the first four logs are:
* 0
* 1
* 2
* 2
Concatenated as in the options: 0122.
Therefore, the correct choice is:
The answer: A
Study Guide / Concept References (no links):
* setTimeout and setInterval timing behavior
* Order of execution in the event loop
* Closures capturing variables (here, logCounter using counter)
* Understanding asynchronous scheduling in JavaScript
NEW QUESTION # 55
A developer receives a comment from the Tech Lead that the code given below has error:
const monthName = 'July';
const year = 2019;
if(year === 2019) {
monthName = 'June';
}
Which line edit should be made to make this code run?
Answer: B
NEW QUESTION # 56
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 thenew 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?
Choose 2 answers
Answer: B,D
NEW QUESTION # 57
......
You can receive help from Salesforce JavaScript-Developer-I Exam Questions for the entire, thorough, and immediate Prepare for your Salesforce Certified JavaScript Developer (JS-Dev-101) JavaScript-Developer-I exam preparation. The top-rated and authentic Salesforce Certified JavaScript Developer (JS-Dev-101) JavaScript-Developer-I practice questions in the Salesforce JavaScript-Developer-I Test Dumps will help you easily pass the Salesforce JavaScript-Developer-I exam. You can also get help from actual Salesforce Certified JavaScript Developer (JS-Dev-101) JavaScript-Developer-I exam questions and pass your dream Salesforce Certified JavaScript Developer (JS-Dev-101) JavaScript-Developer-I certification exam.
JavaScript-Developer-I Exam Details: https://www.edudump.com/exams/Salesforce/JavaScript-Developer-I/
2026 Latest EduDump JavaScript-Developer-I PDF Dumps and JavaScript-Developer-I Exam Engine Free Share: https://drive.google.com/open?id=1nE4csS9MM27TC72jv1eN1oQTkfgjE5dl