What's more, part of that Free4Dump JS-Dev-101 dumps now are free: https://drive.google.com/open?id=1WYrLkeG95RWK02cYNTfTc7fwPxqRx0O-
In accordance to the fast-pace changes of bank market, we follow the trend and provide the latest version of JS-Dev-101 study materials to make sure you learn more knowledge. And since our JS-Dev-101 training quiz appeared on the market, so our professional work team has years' of educational background and vocational training experience, thus our JS-Dev-101 Preparation materials have good dependability, perfect function and strong practicability. So with so many advantages we can offer, why not get moving and have a try on our JS-Dev-101 training materials?
| Section | Weight | Objectives |
|---|---|---|
| Testing | 7% | - Test coverage and improvement - Unit test structure and effectiveness |
| Debugging and Error Handling | 7% | - Console usage, breakpoints and debugging techniques - Error types and handling strategies |
| Server Side JavaScript | 8% | - Package management and CLI tools - Node.js fundamentals and core modules |
| Asynchronous Programming | 13% | - Callbacks, promises, async/await - Event loop and execution flow |
| Variables, Types, and Collections | 23% | - JSON parsing and manipulation - Strings, numbers, dates, arrays and methods - Variable declaration and scope - Data types, type coercion, truthy/falsy values |
| Browser and Events | 17% | - Event handling, propagation, listeners - Browser APIs and developer tools - DOM selection and manipulation |
| Objects, Functions, and Classes | 25% | - ES6 classes, inheritance, modules, decorators - Function types, scope, closures, arrow functions - Object creation, properties, prototypes |
>> Reliable Study JS-Dev-101 Questions <<
We have designed a chat window below the web page. Once you want to ask some questions about the JS-Dev-101 training engine, you can click the little window. Then you just need to click the buttons after writing your email address and your questions about the JS-Dev-101 Exam Questions. Our back operation system will soon receive your email; then you will get a quick feedback on the JS-Dev-101 practice braindumps from our online workers.
NEW QUESTION # 100
Refer to the following object.
How can a developer access the fullName property for dog?
Answer: B
NEW QUESTION # 101
A developer copied a JavaScript object:
01 function Person() {
02 this.firstName = "John";
03 this.lastName = "Doe";
04 this.name = () => `${this.firstName},${this.lastName}`;
05 }
06
07 const john = new Person();
08 const dan = Object.assign({}, john);
09 dan.firstName = 'Dan';
How does the developer access dan's firstName, lastName?
Answer: D
Explanation:
Person instances have:
firstName and lastName as string properties.
A name method that returns a combined string: `${this.firstName},${this.lastName}`.
Object.assign({}, john) creates a shallow copy of john into a new object, dan.
After:
dan.firstName = 'Dan';
dan.name() returns "Dan,Doe".
Analysis of options:
A: dan.firstName() and dan.lastName() are function calls, but firstName/lastName are strings, not functions → TypeError.
B: Calls the defined method and uses both names correctly.
C: dan.name is a function reference; you'd still need to call it: dan.name().
D: dan.firstName + dan.lastName is "DanDoe", no separator. It accesses the properties but not in the method the developer defined.
The intended way, using the provided API, is dan.name().
NEW QUESTION # 102
After user acceptance testing, the developer is asked to change the webpage background based on the user's location. It works on the developer's computer but not on the tester's machine.
Which two actions will help determine accurate results?
Answer: A,C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract JavaScript Knowledge:
Browsers often cache JavaScript, CSS, and HTML. This means:
The developer may be running with the latest version (often with cache disabled in DevTools).
The tester may still be loading an older, cached version of the page where the background-change logic does not exist.
To ensure they are actually testing the latest deployed code:
Disabling cache (A) in the tester's browser (usually via DevTools → Network → "Disable cache") forces fresh loading of all resources on each refresh.
Clearing cache (C) removes older resources from the browser so the next load fetches fresh files from the server.
Options B and D do not directly help verify the tester is using the latest code:
B checks the developer's own browser, which is not the environment showing the problem.
D suggests reworking the code before confirming whether the tester is actually loading the correct version, which is premature.
So the two actions that help produce accurate testing results are A and C.
________________________________________
NEW QUESTION # 103
Refer to the following object:
const dog = {
firstName: 'Beau',
lastName: 'Boo',
get fullName() {
return this.firstName + ' ' + this.lastName;
}
};
How can a developer access the fullName property for dog?
Answer: C
Explanation:
The correct answer is A.
This object uses a getter:
get fullName() {
return this.firstName + ' ' + this.lastName;
}
A getter looks like a method when it is defined, but it is accessed like a normal property.
So the correct access syntax is:
dog.fullName
That returns:
"Beau Boo"
The important distinction is:
dog.fullName
not:
dog.fullName()
Because fullName is a getter property, not a regular function property.
Option B is incorrect because calling dog.fullName() tries to call the returned string as a function. Since "Beau Boo" is not a function, that would cause a TypeError.
Option C is incorrect because there is no get object inside dog.
Option D is incorrect because there is no function object inside dog, and getters are not accessed that way.
Therefore, the verified answer is A.
NEW QUESTION # 104
Given the following code:
let x = ('15' + 10) * 2;
What is the value of x?
Answer: B
Explanation:
________________________________________
Comprehensive and Detailed Explanation From Exact Extract JavaScript Knowledge String + Number results in String concatenation When JavaScript evaluates:
'15' + 10
the + operator sees a string on the left ('15') and a number on the right (10).
In JavaScript, when one operand is a string, the + operator performs string concatenation.
Thus:
'15' + 10 → '1510'
After concatenation, multiplication forces numeric conversion
The expression becomes:
'1510' * 2
The * operator always expects numeric operands.
When given a string, JavaScript attempts numeric conversion using the internal ToNumber operation.
'1510' becomes:
1510
Then:
1510 * 2 = 3020
But 3020 is not in the answer choices-however note the answers represent:
A . 1520
B . 50
C . 35
D . 3020
The correct numeric calculation yields 3020, which matches option D.
But wait-did we misread?
Let's double-check:
('15' + 10) * 2
= '1510' * 2
= 3020
Correct value is 3020.
Therefore the right answer is D.
________________________________________
JavaScript Knowledge Reference (text-only)
The + operator concatenates if either operand is a string.
The * operator always performs numeric coercion.
'numberString' * number converts the string to a number before multiplication.
NEW QUESTION # 105
......
If you are having the same challenging problem, do not worry, Free4Dump is here to help. Our direct and dependable Salesforce Certified JavaScript Developer - Multiple Choice Exam Questions in three formats will surely help you pass the Salesforce JS-Dev-101 Certification Exam. Because this is a defining moment in your career, do not undervalue the importance of our Salesforce JS-Dev-101 exam dumps.
Valid Exam JS-Dev-101 Blueprint: https://www.free4dump.com/JS-Dev-101-braindumps-torrent.html
BONUS!!! Download part of Free4Dump JS-Dev-101 dumps for free: https://drive.google.com/open?id=1WYrLkeG95RWK02cYNTfTc7fwPxqRx0O-