BTW, DOWNLOAD part of PrepPDF JS-Dev-101 dumps from Cloud Storage: https://drive.google.com/open?id=12v-Z2byuwm9bCH5NIBb12_0E6659ptok
In today's society, everyone wants to find a good job and gain a higher social status. As we all know, the internationally recognized JS-Dev-101 certification means that you have a good grasp of knowledge of certain areas and it can demonstrate your ability. This is a fair principle. But obtaining this JS-Dev-101 certificate is not an easy task, especially for those who are busy every day. However, if you use our JS-Dev-101 Exam Torrent, we will provide you with a comprehensive service to overcome your difficulties and effectively improve your ability. If you can take the time to learn about our JS-Dev-101 quiz prep, I believe you will be interested in our products. Our learning materials are practically tested, choosing our JS-Dev-101 exam guide, you will get unexpected surprise.
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified JavaScript Developer I - Multiple Choice Exam (JS-Dev-101) |
| Exam Number: | JS-Dev-101 |
| Real Exam Qty: | 60 (multiple choice) |
| Exam Price: | $200 USD |
| Exam Format: | Multiple Select Questions, Multiple Choice Questions |
| Passing Score: | 65% |
| Available Languages: | English |
| Related Certifications: | Salesforce Platform Developer II Salesforce Platform Developer I |
| Exam Duration: | 105 minutes |
| Certificate Validity Period: | 1 year (maintenance required annually in Salesforce certification program) |
| Recommended Training: | MDN Web Docs - JavaScript Guide Salesforce Trailhead - JavaScript Developer I |
| Exam Registration: | Kryterion Webassessor (Exam Delivery) Salesforce Certification Registration |
| Sample Questions: | Salesforce JS-Dev-101 Sample Questions |
| Exam Way: | Online proctored exam via Salesforce authorized testing platform (e.g., Webassessor) |
| Pre Condition: | No formal prerequisites, but familiarity with JavaScript and web development is recommended. |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/javascriptdeveloper |
>> JS-Dev-101 Detail Explanation <<
For candidates who want to pass the exam just one time, the valid JS-Dev-101 study materials are quite necessary. We are a professional exam materials provider, and we can offer you valid and effective JS-Dev-101 exam materials. In addition, we have a professional team to collect the latest information for the exam, and if you choose us, we can ensure you that you can get the latest information for the exam. We offer you free update for one year for JS-Dev-101 stidy materials, and the latest version will be sent to your email automatically. If you have any questions, you can consult our online chat service stuff.
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
| Topic 5 |
|
| Topic 6 |
|
NEW QUESTION # 126
Given the code below:
Which method can be used to provide a visual representation of the list of users and to allow sorting by the name or email attribute?
Answer: B
NEW QUESTION # 127
function myFunction() {
a = a + b;
var b = 1;
}
myFunction();
console.log(a);
console.log(b);
Which statement is correct?
Answer: B
Explanation:
The correct answer is A, not D.
Inside myFunction(), the declaration:
var b = 1;
is hoisted to the top of the function scope, but only the declaration is hoisted, not the assignment. So internally, JavaScript treats the function approximately like this:
function myFunction() {
var b;
a = a + b;
b = 1;
}
Now examine this line:
a = a + b;
Before JavaScript can assign a value to a, it must first evaluate the right-hand side:
a + b
At this point:
b
exists locally because var b was hoisted, so its value is:
undefined
However:
a
has not been declared anywhere. Reading an undeclared variable causes a:
ReferenceError
So this line throws an error before assignment happens:
a = a + b;
Because the error occurs on that line, the next line inside the function is never executed:
var b = 1;
Also, because the error is not handled with try...catch, the program stops before reaching:
console.log(a);
console.log(b);
Therefore, the accurate statement is:
Line 02 throws a reference error, therefore line 03 is never executed.
So the verified answer is A.
NEW QUESTION # 128
Corrected code:
let a = "*";
let b = "**";
// x = 3;
console.log(a);
What is displayed when the code executes?
Answer: D
Explanation:
The correct answer is B because variable a is declared and initialized before it is printed.
let a = "*";
This creates a block-scoped variable named a and assigns it the string value:
"*"
The line:
// x = 3;
is a comment. JavaScript ignores comments during execution, so this line has no effect.
Then this line runs:
console.log(a);
Since a already exists and contains "*", the console displays:
* Option A is incorrect because a is defined.
Option C is incorrect because a has an assigned value, so it is not undefined.
Option D is incorrect because a was never assigned null.
Therefore, the verified answer is B.
NEW QUESTION # 129
Refer to the following code:
01 let obj = {
02 foo: 1,
03 bar: 2
04 }
05 let output = []
06
07 for (let something of obj) {
08 output.push(something);
09 }
10
11 console.log(output);
What is the value of output on line 11?
Answer: B
Explanation:
The key line is:
for (let something of obj) {
In JavaScript:
for...of is used to iterate over iterable objects, such as:
Arrays
Strings
Maps
Sets
Other objects that implement a [Symbol.iterator] method.
Plain JavaScript objects created with object literal {} are not iterable by default. They do not have [Symbol.iterator], so using for...of directly on them causes a runtime error.
Specifically:
for (let something of obj) { ... }
will throw a TypeError similar to:
obj is not iterable
Therefore, the loop body never executes, and console.log(output); is never reached without an error.
Why other options are incorrect:
B . [1, 2]
To get [1, 2], you could use Object.values(obj) and iterate that array.
But here, for...of obj never yields values because it throws an error.
C . ["foo", "bar"]
To get property names, you could use Object.keys(obj) with for...of.
Again, the code does not do that; it incorrectly tries to iterate the object directly.
D . ["foo:1", "bar:2"]
You would need both keys and values, combining them manually.
The given code does not implement such logic and fails before pushing anything into output.
Hence, the correct answer is:
Answe r: A
Study Guide / Concept Reference (no links):
Difference between for...of and for...in
Iterables in JavaScript and [Symbol.iterator]
Plain objects {} are not iterable by default
Correct patterns to iterate object keys/values (Object.keys, Object.values, Object.entries)
NEW QUESTION # 130
Given the following code:
document.body.addEventListener(' click ', (event) => {
if (/* CODE REPLACEMENT HERE */) {
console.log('button clicked!');
)
});
Which replacement for the conditional statement on line 02 allows a developer to correctly determine that a button on page is clicked?
Answer: D
NEW QUESTION # 131
......
Exam JS-Dev-101 Question: https://www.preppdf.com/Salesforce/JS-Dev-101-prepaway-exam-dumps.html
DOWNLOAD the newest PrepPDF JS-Dev-101 PDF dumps from Cloud Storage for free: https://drive.google.com/open?id=12v-Z2byuwm9bCH5NIBb12_0E6659ptok