Salesforce JavaScript-Developer-I Practice Test Pdf Exam Material
JavaScript-Developer-I Answers JavaScript-Developer-I Free Demo Are Based On The Real Exam
How to book the Salesforce JavaScript-Developer-I Exam
There are the following steps for registering the Salesforce JavaScript Developer I exam. Step 1: Visit Salesforce Exam Registration Step 2: Signup/Login to Salesforce account Step 4: Select Date, time and confirm with the payment method
Topics of Salesforce JavaScript Developer I Exam
Aspirants must know the exam topics before they start of preparation. Because it will help them to prepare for the below concepts Salesforce JavaScript-Developer-I exam will include the following topics:
1. Variable, Types, and Collection: 23%
Scenario based coding Variables Creation and Initialization JSON object understanding
2. Object, Functions, and Classes: 25%
Implementation of different functions Understanding of different modules of Javascript Scope of variables and their execution flow
3. Browser and Events: 17%
Handling and propagation of events Development tools of browsers Understanding of browser specific APIs
4. Asynchronous Programming: 13%
Asynchrounous programming different concepts Monitoring and management of different loops
5. Server Side Javascript: 8%
Implementation of Node.js Understanding of Node.js CLI commands
6. Testing: 7%
Unit Testing effectiveness of different tests
Benefits in Obtaining Salesforce JavaScript-Developer-I Certification
With the introduction of the Lightning Experience by Salesforce, it is possible to develop cool, looking applications for a wide range of tasks. Admins have been able to create beautiful pages for their objects more than ever, with an interface entirely tailored for each user.For developers, the same application has never before been possible for Salesforce developers to create applications that stretch well beyond Salesforce's declarative features. It's all achieved with the use of a JavaScript application for Lightning & Lightning Web components.
The certification for JavaScript Developer I has just been released and fills a large gap in the certification list for Salesforce. Salesforce Developers who want to prove their Lightning skills, but also new entrants into the Salesforce community, are certified to demonstrate that they know what is relevant. A typical Salesforce 60 multi-choice test is split into two parts and is influenced by a super badge (Similar to Developer II certification).
NEW QUESTION 13
Refer to the code below:
<html lang="en">
<table onclick="console.log(Table log');">
<tr id="row1">
<td>Click me!</td>
</tr>
<table>
<script>
function printMessage(event) {
console.log('Row log');
}
Let elem = document.getElementById('row1');
elem.addEventListener('click', printMessage, false);
</script>
</html>
Which code change should be made for the console to log only Row log when 'Click me! ' is
clicked?
- A. Add event.removeEventListener(); toprintMessage function.
- B. Add.event.stopPropagation(); to window.onLoad event handler.
- C. Add event.removeEventListener(); to window.onLoad event handler.
- D. Add event.stopPropagation(); to printMessage function.
Answer: D
NEW QUESTION 14
Which code change should be done for the console to log the following when 'Click me!' is clicked'
> Row log
> Table log
- A. Remove line 10
- B. Change line 14 to elem.addEventListener ('click', printMessage, true);
- C. Change line 10 to event.stopPropagation (false) ;
- D. Remove lines 13 and 14
Answer: C
NEW QUESTION 15
Refer to the following code that performs a basis mathematical operation on a provided input:
How should line o2 be written to ensure that x evaluated to 6 in the line below?
Let x calculate (''g'');
- A. Return Number (num + 10) / 3;
- B. Return integer (num + 10) / 3;
- C. Return Number (num) + 10) / 3);
- D. Return Number (num + 10) / 3;
Answer: C
NEW QUESTION 16
A developer wrote the following code:
The developer has a getNextValue function to execute after handleObjectvalue ( ), but does not want to execute getNextValues ( ) If an error occurs.
How can the developer change the code to ensure this behavior?
A)
B)
C)
- A. Option C
- B. Option B
- C. Option D
- D. Option A
Answer: C
NEW QUESTION 17
Refer to the code below:
01 const server = require('server');
02 /* Insert code here */
A developer imports a library that creates a web server. The imported library uses events and
callbacks to start the servers
Which code should be inserted at the line 03 to set up an event and start the web server ?
- A. console.log( 'Listening on ', port) ;
- B. server.on(' connect ' , ( port) => {
console.log('Listening on ' , port) ;}) - C. serve(( port) => (
- D. server()
- E. Server.start ();
Answer: B
NEW QUESTION 18
Refer to the following object.
How can a developer access the fullName property for dog?
- A. Dog.fullName ( )
- B. Dog, function, fullName
- C. Dog.fullName
- D. Dog, get, fullName
Answer: C
NEW QUESTION 19
Given the code block below:
What should a developer insert line 15 to output the following message using the load method?
SNENneziz is loading a cartridge game: super Monic 3x Force...
- A. Console116bit. Prototype. Load (gamename) = function () (
- B. Console16bit. Prototype. Load (gamename) (
- C. Console16bit. Prototype. Load = function (gamename) (
- D. Console16bit = object. Create (GameConsole. Prototype). Load _ function (gamename) (
Answer: C
NEW QUESTION 20
Which two code snippets show working examples of a recursive function?
Choose 2 answers
A)
B)
C)
D)
- A. Option C
- B. Option B
- C. Option D
- D. Option A
Answer: A,C
NEW QUESTION 21
Which code statement below correctly persists an objects in local Storage ?
- A. const setLocalStorage = ( jsObject) => {
window.localStorage.setItem(jsObject);
} - B. const setLocalStorage = ( jsObject) => {
window.localStorage.connectObject(jsObject));
} - C. const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.setItem(storageKey, JSON.stringify(jsObject));
} - D. const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.persist(storageKey, jsObject);
}
Answer: C
Explanation:
NEW QUESTION 22
Given the code below:
Function myFunction(){
A =5;
Var b =1;
}
myFunction();
console.log(a);
console.log(b);
What is the expected output?
- A. Line 08 thrones an error, therefore line 09 is never executed.
- B. Line 08 outputs the variable, but line 09 throws an error.
- C. Both lines 08 and 09 are executed, but values outputted are undefined.
- D. Both lines 08 and 09 are executed, and the variables are outputted.
Answer: B
NEW QUESTION 23
A developer has two ways to write a function:
Option A:
function Monster() {
This.growl = () => {
Console.log ("Grr!");
}
}
Option B:
function Monster() {};
Monster.prototype.growl =() => {
console.log("Grr!");
}
After deciding on an option, the developer creates 1000 monster objects.
How many growl methods are created with Option A Option B?
- A. 1000 growl methods are created regardless of which option is used.
- B. 1 growl method is created for Option A. 1000 growl methods are created for Option B.
- C. 1 growl method is created regardless of which option is used.
- D. 1000 growl method is created for Option A. 1 growl methods are created for Option B.
Answer: D
NEW QUESTION 24
Refer to the code below:
Const searchTest = 'Yay! Salesforce is amazing!" ;
Let result1 = searchText.search(/sales/i);
Let result 21 = searchText.search(/sales/i);
console.log(result1);
console.log(result2);
After running this code, which result is displayed on the console?
- A. > true > false
- B. > 5 >undefined
- C. > 5 > -1
- D. > 5 > 0
Answer: B
NEW QUESTION 25
A developer wrote the following code:
01 let X = object.value;
02
03 try {
04 handleObjectValue(X);
05 } catch (error) {
06 handleError(error);
07 }
The developer has a getNextValue function to execute after handleObjectValue(), but
does not want to execute getNextValue() if an error occurs.
How can the developer change the code to ensure this behavior?
- A. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } then {
08 getNextValue();
09 } - B. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 }
08 getNextValue(); - C. 03 try{
04 handleObjectValue(x);
05 } catch(error){
06 handleError(error);
07 } finally {
08 getNextValue();
10 } - D. 03 try {
04 handleObjectValue(x)
05 ........................
Answer: D
NEW QUESTION 26
Refer to the string below.
Const str='Salesforce';
Which two statements results in the word 'Sales'?
Answer:
Explanation:
Str.substring(0,5);
Str.substr(0,5);
NEW QUESTION 27
Refer to the code below:
Let foodMenu1 = ['pizza', 'burger', 'French fries'];
Let finalMenu = foodMenu1;
finalMenu.push('Garlic bread');
What is the value of foodMenu1 after the code executes?
- A. [ 'Garlic bread']
- B. [ 'Garlic bread' , 'pizza','Burger', 'French fires' ]
- C. [ 'pizza','Burger', 'French fires']
- D. [ 'pizza','Burger', 'French fires', 'Garlic bread']
Answer: C
NEW QUESTION 28
Refer to the code below:
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
- A. {type ; update ', recordId : '123abc')
- B. 'update', ( recordId ; 123abc'
) - C. 'update', {
Detail ; {
recordId, '123abc
)
) - D. 'update' , '123abc'
Answer: B,C
NEW QUESTION 29
Which two code snippets show working examples of a recursive function?
Choose 2 answers
- A. Function factorial ( numVar ) {
If (numVar < 0) return;
If ( numVar === 0 ) return 1;
return numVar -1; - B. Const sumToTen = numVar => {
If (numVar < 0)
Return;
return sumToTen(numVar + 1)}; - C. Let countingDown = function(startNumber) {
If ( startNumber >0) {
console.log(startNumber) ;
return countingDown(startNUmber);
} else {
return startNumber;
}}; - D. Const factorial =numVar => {
If (numVar < 0) return;
If ( numVar === 0 ) return 1;
return numVar * factorial ( numVar - 1 );
};
Answer: C,D
NEW QUESTION 30
Given the following code:
Counter = 0;
const logCounter = () => {
console.log(counter);
);
logCounter();
setTimeout(logCOunter, 1100);
setInterval(() => {
Counter++
logCounter();
}, 1000);
What is logged by the first four log statements?
- A. 0 1 1 2
- B. 0 0 1 2
- C. 0 1 2 2
- D. 0 1 2 3
Answer: A
NEW QUESTION 31
Which two console logs output NaN?
Choose 2 answers | |
- A. console.log(parseInt ' ("two')) ;
- B. console.loeg(10 / 'five');
- C. console.log(10 / Number('5) ) ;
- D. console.log(10 / 0);
Answer: A,B
NEW QUESTION 32
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