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Salesforce Certified JavaScript Developer I Exam Dumps

Javascript-Developer-I Exam Format | Course Contents | Course Outline | Exam Syllabus | Exam Objectives

Exam Details for Javascript-Developer-I Salesforce Certified JavaScript Developer I:

Exam Specification:
- Number of Questions: The exam typically consists of multiple-choice questions, with a total of approximately 60 questions.
- Time Limit: The total time allocated for the exam is usually 90 minutes.
- Passing Score: The passing score for the exam varies, but it is generally set around 65% or higher.
- Exam Format: The exam is usually conducted in a proctored environment, either in-person or online.

Course Outline:

The Salesforce Certified JavaScript Developer I course covers the following key areas:

1. Introduction to JavaScript:
- JavaScript basics, syntax, and data types
- Variables, operators, and control structures
- Functions, arrays, and objects in JavaScript
- Working with DOM (Document Object Model)
- Handling events and event-driven programming

2. JavaScript in Salesforce:
- Overview of JavaScript in the Salesforce platform
- JavaScript buttons and links in Salesforce
- Customizing page layouts using JavaScript
- Client-side validation and form manipulation
- Working with Visualforce pages and components

3. Advanced JavaScript Concepts:
- Error handling and debugging techniques
- Asynchronous programming with JavaScript (promises, async/await)
- Manipulating JSON data and working with APIs
- JavaScript frameworks and libraries (e.g., jQuery, Angular, React)
- Performance optimization and best practices

4. Security and Governance:
- JavaScript security considerations
- Preventing common vulnerabilities (e.g., Cross-Site Scripting)
- Accessing Salesforce data securely with JavaScript
- Implementing security policies and practices

Exam Objectives:

The objectives of the Javascript-Developer-I exam are to assess the candidate's understanding of the following:

1. JavaScript fundamentals and syntax.
2. JavaScript usage in the Salesforce platform.
3. Advanced JavaScript concepts and techniques.
4. JavaScript security considerations.
5. Best practices for JavaScript development in Salesforce.

Exam Syllabus:

The exam syllabus for Javascript-Developer-I includes the following topics:

1. Introduction to JavaScript
2. JavaScript in Salesforce
3. Advanced JavaScript Concepts
4. Security and Governance

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Javascript-Developer-I PDF Sample Questions

Javascript-Developer-I Sample Questions

Salesforce
Javascript-Developer-I
Salesforce Certified JavaScript Developer I
https://killexams.com/pass4sure/exam-detail/Javascript-Developer-I
Question: 57
A developer is setting up a Node,js server and is creating a script at the root of the source code, index,js, that will start
the server when executed. The developer declares a variable that needs the folder location that the code executes from.
Which global variable can be used in the script?
A. window.location
B. _filename
C. _dirname
D. this.path
Answer: B
Question: 58
Refer to the following array:
Let arr1 = [ 1, 2, 3, 4, 5 ];
Which two lines of code result in a second array, arr2 being created such that arr2 is not a reference to arr1?
A. Let arr2 = arr1.slice(0, 5);
B. Let arr2 = Array.from(arr1);
C. Let arr2 = arr1;
D. Let arr2 = arr1.sort();
Answer: A,B
Question: 59
A developer writes the code below to calculate the factorial of a given number function sum(number)
{
return number * sum(number-1);
}
sum (3);
what is the result of executing the code?
A. 0
B. 6
C. Error
D. -Infinity
Answer: C
Question: 60
Refer to the code below:
function foo () {
const a =2;
function bat() {
console.log(a);
}
return bar;
}
Why does the function bar have access to variable a?
A. Inner function�s scope
B. Hoisting
C. Outer function�s scope
D. Prototype chain
Answer: C
Question: 61
Given the code below:
01 function GameConsole (name) {
02 this.name = name;
3 }
4
5 GameConsole.prototype.load = function(gamename) {
6 console.log( ` $(this.name) is loading a game : $(gamename) �`);
7 )
08 function Console 16 Bit (name) {
09 GameConsole.call(this, name) ;
10 }
11 Console16bit.prototype = Object.create ( GameConsole.prototype) ;
12 //insert code here
13 console.log( ` $(this.name) is loading a cartridge game : $(gamename) �`);
14 }
15 const console16bit = new Console16bit(� SNEGeneziz �);
16 console16bit.load(� Super Nonic 3x Force �);
What should a developer insert at line 15 to output the following message using the method?
> SNEGeneziz is loading a cartridge game: Super Monic 3x Force . . .
A. Console16bit.prototype.load(gamename) = function() {
B. Console16bit.prototype.load = function(gamename) {
C. Console16bit = Object.create(GameConsole.prototype).load = function (gamename) {
D. Console16bit.prototype.load(gamename) {
Answer: B
Question: 62
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?
A. Event.clicked
B. e.nodeTarget ==this
C. event.target.nodeName == �BUTTON�
D. button.addEventListener(�click�)
Answer: C
Question: 63
A Developer wrote the following code to test a sum3 function that takes in an array of numbers and returns the sum of
the first three number in the array,
The test passes:
Let res = sum2([1, 2, 3 ]) ;
console.assert(res === 6 );
Res = sum3([ 1, 2, 3, 4]);
console.assert(res=== 6);
A different developer made changes to the behavior of sum3 to instead sum all of the numbers present in the array.
The test passes:
Which two results occur when running the test on the updated sum3 function? Choose 2 answers
A. The line 02 assertion passes.
B. The line 02 assertion fails
C. The line 05 assertion passes.
D. The line 05 assertion fails.
Answer: A,D
Question: 64
A team that works on a big project uses npm to deal with projects dependencies.
A developer added a dependency does not get downloaded when they execute npm install.
Which two reasons could be possible explanations for this? Choose 2 answers
A. The developer missed the option �add when adding the dependency.
B. The developer added the dependency as a dev dependency, and NODE_ENV Is set to production.
C. The developer missed the option �save when adding the dependency.
D. The developer added the dependency as a dev dependency, and NODE_ENV is set to production.
Answer: B,C,D
Question: 65
Which statement can a developer apply to increment the browser�s navigation history without a page refresh?
Which statement can a developer apply to increment the browser�s navigation history without a page refresh?
A. window.history.pushState(newStateObject);
B. window.history.pushStare(newStateObject, �, null);
C. window.history.replaceState(newStateObject,�, null);
D. window.history.state.push(newStateObject);
Answer: C
Question: 66
Refer to code below:
Function muFunction(reassign){
Let x = 1;
var y = 1;
if( reassign ) {
Let x= 2;
Var y = 2;
console.log(x);
console.log(y);}
console.log(x);
console.log(y);}
What is displayed when myFunction(true) is called?
A. 2 2 1 1
B. 2 2 undefined undefined
C. 2 2 1 2
D. 2 2 2 2
Answer: C
Question: 67
A test has a dependency on database. query. During the test, the dependency is replaced with an object called database
with the method, Calculator query, that returns an array. The developer does not need to verify how many times the
method has been called.
Which two test approaches describe the requirement? Choose 2 answers
A. White box
B. Stubbing
C. Black box
D. Substitution
Answer: A,D
Question: 68
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?
A. super (body, author, viewCount) {
B. Function Post (body, author, viewCount) {
C. constructor (body, author, viewCount) {
D. constructor() {
Answer: C
Question: 69
Which code statement correctly retrieves and returns an object from localStorage?
A. const retrieveFromLocalStorage = () =>{
return JSON.stringify(window.localStorage.getItem(storageKey));
}
B. const retrieveFromLocalStorage = (storageKey) =>{ return window.localStorage.getItem(storageKey); }
C. const retrieveFromLocalStorage = (storageKey) =>{
return JSON.parse(window.localStorage.getItem(storageKey));
}
D. const retrieveFromLocalStorage = (storageKey) =>{ return window.localStorage[storageKey];
}
Answer: C
Question: 70
Given the following code:
Let x =(�15� + 10)*2;
What is the value of a?
A. 3020
B. 1520
C. 50
D. 35
Answer: A
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Salesforce Certified JavaScript Developer I Exam Dumps

Javascript-Developer-I Exam Format | Course Contents | Course Outline | Exam Syllabus | Exam Objectives

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Javascript-Developer-I PDF Sample Questions

Javascript-Developer-I Sample Questions

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