2026 Latest FreeDumps JS-Dev-101 PDF Dumps and JS-Dev-101 Exam Engine Free Share: https://drive.google.com/open?id=1CpLaYK34EfFHAz8gbKc_C4dzb6-4NmpR
How do you arrange the day? Many people may have different ways and focus of study in the different time intervals, but we will find that in real life, can take quite a long time to learn JS-Dev-101 learning questions to be extremely difficult. You may be taken up with all kind of affairs, so you have little time for studying on our JS-Dev-101 Exam Braindumps. But we can claim that our JS-Dev-101 practice engine is high-effective, as long as you study for 20 to 30 hours, you will be able to pass the exam.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Debugging and Error Handling | 7% | - Logging strategies and debugging techniques - try-catch blocks |
| Topic 2: Browser and Events | 17% | - Event handling, propagation, bubbling, and capturing - Browser Developer Tools - DOM manipulation |
| Topic 3: Server Side JavaScript | 8% | - Node.js applications - Modules and file operations - Salesforce API integration |
| Topic 4: Asynchronous Programming | 13% | - Promises and async/await - Event loop and asynchronous code execution - Callback patterns |
| Topic 5: Testing | 7% | - Automated testing strategies - Unit testing with Jest - Test-driven development principles |
| Topic 6: Variables, Types, and Collections | 23% | - JSON parsing and stringification - Type coercion and type conversion - Array manipulation (map, filter, reduce, forEach, find) - String manipulation and Date objects - Variable declaration (var, let, const, scoping, hoisting) |
| Topic 7: Objects, Functions, and Classes | 25% | - Object creation, properties, and prototypal inheritance - ES6 Classes, constructors, methods, and inheritance - JavaScript modules (export, import) - Function declarations, expressions, and arrow functions - Higher-order functions and closures |
>> New JS-Dev-101 Test Preparation <<
Without self-assessment, you cannot ace the JS-Dev-101 test. To ensure that you appear in the final Salesforce Certified JavaScript Developer - Multiple Choice (JS-Dev-101) examination without anxiety and mistakes, FreeDumps offers desktop Salesforce JS-Dev-101 Practice Test software and web-based JS-Dev-101 practice exam. These JS-Dev-101 practice tests are customizable, simulate the original JS-Dev-101 exam scenario, and track your performance.
NEW QUESTION # 118
Refer to the code below:
const event = new CustomEvent(
//Missing Code
);
obj.dispatchEvent(event);
A developer needs to dispatch a custom event called update to send information about recordId.
Which two options could a developer insert at the placeholder in line 02 to achieve this?
Choose 2 answers
Answer: C,D
NEW QUESTION # 119
A developer creates a class that represents a blog post based on the requirement that a Post should have a body author and view count.
The Code shown Below:
Class Post{
// Insert code here
This.body =body
This.author = author;
this.viewCount = viewCount;
}
}
Which statement should be inserted in the placeholder on line 02 to allow for a variable to be set to a new instanceof a Post with the three attributes correctly populated?
Answer: C
NEW QUESTION # 120
Refer to the code:
01 console.log('Start');
02 Promise.resolve('Success').then(function(value) {
03 console.log('Success');
04 });
05 console.log('End');
What is the output after the code executes successfully?
Answer: A
Explanation:
________________________________________
Comprehensive and Detailed Explanation From Exact Extract JavaScript Knowledge console.log('Start') runs immediately (synchronous).
Promise.resolve().then(...) places the callback in the microtask queue. The .then handler does not run immediately.
console.log('End') runs next (still synchronous).
After the synchronous script finishes, the microtask queue runs, logging "Success".
Execution order:
Start
End
Success
This matches option B.
________________________________________
JavaScript Knowledge Reference (text-only)
Promise .then() callbacks execute after the current call stack finishes (microtask queue).
Synchronous logs run immediately, before promise callbacks.
NEW QUESTION # 121
A test searches for:
<button class="blue">Checkout</button>
But the actual HTML is:
<button>Checkout</button>
The test fails because it expects a class that no longer exists.
What type of test outcome is this?
Answer: D
Explanation:
Definitions:
False negative → The test reports a failure even though the feature actually works.
False positive → The test reports success when it should not.
True positive → Correctly identifies something is working.
True negative → Correctly identifies something is not working.
In this scenario:
The checkout button does exist, so the feature works.
The test fails incorrectly, because it is checking for the wrong selector.
That is the definition of a false negative.
JavaScript Knowledge Reference (text-only)
Test outcome classification: false negative = feature works but test fails.
NEW QUESTION # 122
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: D
NEW QUESTION # 123
......
FreeDumps is not only a website but as a professional JS-Dev-101 Study Tool for candidates. Last but not least, we have advanced operation system of JS-Dev-101 training materials which not only can ensure our customers the fastest delivery speed but also can protect the personal information of our customers automatically. In addition, our professional after sale stuffs will provide considerate online after sale service twenty four hours a day, seven days a week for all of our customers.
JS-Dev-101 Latest Practice Materials: https://www.freedumps.top/JS-Dev-101-real-exam.html
2026 Latest FreeDumps JS-Dev-101 PDF Dumps and JS-Dev-101 Exam Engine Free Share: https://drive.google.com/open?id=1CpLaYK34EfFHAz8gbKc_C4dzb6-4NmpR