Luke Reed Luke Reed's صفحة الملف الشخصي

Luke Reed Luke Reed

0 دورة ملتحَق بها • 0 اكتملت الدورة

سيرة شخصية

Practice Test JS-Dev-101 Fee & JS-Dev-101 Valid Test Dumps

What's more, part of that Prep4sureGuide JS-Dev-101 dumps now are free: https://drive.google.com/open?id=1AqCwgh7vKSbKalWwzc5TLK9TLZQo4m06

One of our outstanding advantages is our high passing rate, which has reached 99%, and much higher than the average pass rate among our peers. Our high passing rate explains why we are the top JS-Dev-101 prep guide in our industry. One point does farm work one point harvest, depending on strength speech! The source of our confidence is our wonderful JS-Dev-101 Exam Questions. Passing the exam won’t be a problem as long as you keep practice with our JS-Dev-101 study materials about 20 to 30 hours.

Salesforce JS-Dev-101 Exam Syllabus Topics:

Topic
Details

Topic 1

Variables, Types, and Collections: Covers declaring and initializing variables, working with strings, numbers, dates, arrays, and JSON, along with understanding type coercion and truthy
falsy evaluations.

Topic 2

Testing: Covers evaluating unit test effectiveness against a block of code and modifying tests to improve their coverage and reliability.

Topic 3

Asynchronous Programming: Covers asynchronous programming concepts and understanding how the event loop controls execution flow and determines outcomes.

Topic 4

Server Side JavaScript: Covers Node.js implementations, CLI commands, core modules, and package management solutions for given scenarios.

Topic 5

Objects, Functions, and Classes: Covers function, object, and class implementations to meet business requirements, along with the use of modules, decorators, variable scope, and execution flow.

>> Practice Test JS-Dev-101 Fee <<

2026 Trustable JS-Dev-101: Practice Test Salesforce Certified JavaScript Developer - Multiple Choice Fee

The experts in our company have been focusing on the JS-Dev-101 examination for a long time and they never overlook any new knowledge. The content of our study materials has always been kept up to date. Don't worry if any new information comes out after your purchase of our JS-Dev-101 study guide. We will inform you by E-mail when we have a new version. With our great efforts, our study materials have been narrowed down and targeted to the JS-Dev-101 examination. So you don't need to worry about wasting your time on useless JS-Dev-101 exam materials information.

Salesforce Certified JavaScript Developer - Multiple Choice Sample Questions (Q23-Q28):

NEW QUESTION # 23
What is the result of the code block?

A. The console logs 'flag' and then an error is thrown.
B. An error is thrown.
C. The console logs 'flag' and another flag.
D. The console logs only 'flag'.

Answer: D

NEW QUESTION # 24
Which function should a developer use to repeatedly execute code at a fixed interval ?

A. setInteria
B. setPeriod
C. setIntervel
D. setTimeout

Answer: C

NEW QUESTION # 25
A developer implements a function that adds a few values.
Function sum(num) {
If (num == undefined) {
Num =0;
}
Return function( num2, num3){
If (num3 ===undefined) {
Num3 =0 ;
}
Return num + num2 + num3;
}
}
Which three options can the developer invoke for this function to get a return value of 10 ?
Choose 3 answers

A. sum(10) ()
B. sum(5)(5)
C. sum() (5, 5)
D. Sum () (20)
E. Sum (5, 5) ()

Answer: B,C

NEW QUESTION # 26
Refer to the code:
01 const event = new CustomEvent(
02 // Missing code
03 );
04 obj.dispatchEvent(event);
A developer needs to dispatch a custom event called update to send information about recordId.
Which two options can be inserted at line 02?

A. { type: 'update', recordId: '123abc' }
B. 'update', { recordId: '123abc' }
C. 'update', { detail: { recordId: '123abc' } }
D. 'update', '123abc'

Answer: B,C

Explanation:
The correct constructor signature for CustomEvent is:
new CustomEvent(eventName, optionsObject)
Where:
eventName is a string.
optionsObject may include:
detail → used to pass custom data
bubbles
cancelable, etc.
Example:
new CustomEvent('update', {
detail: { recordId: '123abc' }
});
Now evaluate each option:
Option A
{ type: 'update', recordId: '123abc' }
Incorrect: The constructor requires (eventName, options), not a single object. type is not used this way.
Option B
'update', { detail: { recordId: '123abc' } }
Correct format. detail is the proper place for custom event data.
Option C
'update', '123abc'
Incorrect: The second argument must be an object (options), not a string.
Option D
'update', { recordId: '123abc' }
Acceptable because any extra properties on the options object are still allowed, even though best practice is to use detail.
This still creates a valid CustomEvent, and the event will dispatch successfully.
Thus the two correct answers are B and D.
JavaScript Knowledge Reference (text-only)
new CustomEvent(name, options) is the required syntax.
The detail property of the options object is the standard location for custom data.
The second argument must be an object; other types are invalid.

NEW QUESTION # 27
A developer executes:
document.cookie;
document.cookie = 'key=John Smith';
What is the behavior?

A. Cookies are read, but the key value is not set because the value is not URL encoded.
B. Cookies are read and the key value is set, the remaining cookies are unaffected.
C. Cookies are read and the key value is set, and all cookies are wiped.
D. Cookies are not read because line 01 should be document.cookies, but the key value is set and all cookies are wiped.

Answer: B

Explanation:
document.cookie retrieves the cookie string.
Setting document.cookie = 'key=John Smith' adds or updates only that one cookie.
Important details:
Writing to document.cookie does not overwrite all cookies.
The browser does not require URL encoding, though it is recommended. Non-encoded spaces are allowed and automatically handled.
document.cookies does not exist; the correct property is document.cookie.
Therefore, the correct behavior:
Cookies are read.
A new cookie key=John Smith is set.
Existing cookies remain.
JavaScript Knowledge Reference (text-only)
Writing document.cookie appends or updates cookies, not replaces them.
document.cookie is both getter and setter for cookie strings.

NEW QUESTION # 28
......

As a thriving multinational company, we are always committed to solving the problem that our customers may have. For example, the JS-Dev-101 learning engine we developed can make the JS-Dev-101 exam easy and easy, and we can confidently say that we did this. A large number of buyers pouring into our website every day can prove this. Just look at it and let yourself no longer worry about the JS-Dev-101 Exam.

JS-Dev-101 Valid Test Dumps: https://www.prep4sureguide.com/JS-Dev-101-prep4sure-exam-guide.html

BTW, DOWNLOAD part of Prep4sureGuide JS-Dev-101 dumps from Cloud Storage: https://drive.google.com/open?id=1AqCwgh7vKSbKalWwzc5TLK9TLZQo4m06