Pass Your Salesforce Exam with JavaScript-Developer-I Exam Dumps (Updated 160 Questions)
JavaScript-Developer-I Exam Dumps - Salesforce Practice Test Questions
How to Prepare for Salesforce JavaScript Developer I Exam
Preparation Guide for Salesforce JavaScript Developer I Exam
Introduction
Salesforce is a solution for managing customer relationships that unite customers and companies. This is an interactive CRM platform that provides a single, shared view of every client in all the divisions including marketing, distribution, exchange, and operation. Provide the clients with the individual experience Salesforce demand 360 product via the Integrated CRM Platform. It delivers solid and related goods to boost marketing, revenue, exchange, operation, IT, and more. Salesforce is a digital cloud computing (SaaS) firm specializing in the management of client relationships (CRMs). There was a mistake. The app is now the number one of consumer satisfaction and allows organizations to track customer behavior, advertise to consumers, and more. Salesforce is common because it is bundled with features such as contact management, workflow development, task management, incentive monitoring, teamwork tools, customer experience tools, analytics, and interactive, smartphone dashboard.
NEW QUESTION 20
Refer to the following code:
What is the output of line 11?
- A. [1, 2]
- B. [''bar'' , ''foo'']
- C. ['foo'', ''bar'']
- D. [''foo:1'', ''bar:2'']
Answer: C
NEW QUESTION 21
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. Console16bit. Prototype. Load (gamename) (
- B. Console16bit. Prototype. Load = function (gamename) (
- C. Console116bit. Prototype. Load (gamename) = function () (
- D. Console16bit = object. Create (GameConsole. Prototype). Load _ function (gamename) (
Answer: B
NEW QUESTION 22
The developer has a function that prints "Hello" to an input name. To test this, thedeveloper created a function that returns "World". However the following snippet does not print " Hello World".
What can the developer do to change the code to print "Hello World" ?
- A. Change line 7 to ) () ;
- B. Change line 9 to sayHello(world) ();
- C. Change line 5 to function world ( ) {
- D. Change line 2 to console.log('Hello' , name() );
Answer: D
NEW QUESTION 23
Universal Container (UC) notices that its application allows users to search for account makes a network request each time a key is pressed. This results in too many request for the server to handle.
O address this problem, UC decides to implement a deboune function on the search string change handler. Choose 3 answers
- A. If the there is an existing setTimeout and the search string changes, cancel the existing setTimeout using the persisted timeout replace it with a new setTimeout.
- B. When the search string changes, enqueue the request within a setTimeout.
- C. Ensure that the network request has the property debounce set to true,
- D. If there is an existing settimeout and the search string changes, allow the existing setTimeout to finish, and do not enqueue a settimeout.
- E. Store the timeId of the setTimeout last enqueued by the search string change handler.
Answer: A,B,C
NEW QUESTION 24
A developer wants to define a function log to be used a few times on a single-file JavaScript script.
01 // Line 1 replacement
02 console.log('"LOG:', logInput);
03 }
Which two options can correctly replace line 01 and declare the function for use?
Choose 2 answers
- A. function leg(logInput) {
- B. function log = (logInput) {
- C. const log = (logInput) => {
- D. const log(loginInput) {
Answer: A,C
NEW QUESTION 25
Universal Containers (UC) just launched a new landing page, but users complain that the website is slow. A developer found some functions any that might cause this problem. To verify this, the developer decides to execute everything and log the time each of these three suspicious functions consumes.
Which function can the developer use to obtain the time spent by every one of the three functions?
- A. console. timeLog ()
- B. console.getTime ()
- C. console.trace()
- D. console.timeStamp ()
Answer: A
NEW QUESTION 26
A developer uses a parsed JSON string to work with user information as in the block below:
Which two option access the email attributes in the object? Choose 2 answers
- A. userInformation(email)
- B. userInformation. email
- C. userInformation. Get (''email'')
- D. userInformation ( ''email'' )
Answer: B,D
NEW QUESTION 27
Refer to the code below:
For (let number =2: number <= S; number += 1) ( // insert code statement here The developer needs to insert a code statement in the location shown. The code statement has these requirements:
1. Does not require an import
2. Logs an error when the Boolean statement evaluates to false
3. Works In both the browser and Node.js
Which statement meet these requirements?
- A. Assert (number $ 2 == 0);
- B. Console. Debug (number $ 2 == 0) ;
- C. Console. Assert ( number $ 2 == 0 ) ;
- D. Console. error (number $ 2 == 0) ;
Answer: C
NEW QUESTION 28
Refer to the code snippet below:
Let array = [1, 2, 3, 4, 4, 5, 4, 4];
For (let i =0; i < array.length; i++)
if (array[i] === 4) {
array.splice(i, 1);
}
}
What is the value of array after the code executes?
- A. [1, 2, 3, 5]
- B. [1, 2, 3, 4, 5, 4, 4]
- C. [1, 2, 3, 4, 5, 4]
- D. [1, 2, 3, 4, 4, 5, 4]
Answer: D
NEW QUESTION 29
A developer is setting up a new Node.js server with a client library that is built using events and callbacks.
The library:
Will establish a web socket connection and handle receipt of messages to the server Will be imported with require, and made available with a variable called we.
The developer also wants to add error logging if a connection fails.
Given this info, which code segment shows the correct way to set up a client with two events that listen at execution time?
- A. ws.on ('connect', ( ) => {
console.log('connected to client'); ws.on('error', (error) => { console.log('ERROR' , error); });
}); - B. ws.connect (( ) => {
console.log('connected to client'); }).catch((error) => { console.log('ERROR' , error); }}; - C. try{
ws.connect (( ) => {
console.log('connected to client'); });
} catch(error) { console.log('ERROR' , error); };
} - D. ws.on ('connect', ( ) => { console.log('connected to client'); }}; ws.on('error', (error) => { console.log('ERROR' , error); }};
Answer: D
NEW QUESTION 30
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. > 5 >undefined
- B. > 5 > -1
- C. > 5 > 0
- D. > true > false
Answer: A
NEW QUESTION 31
A developer at Universal Container creates a new landing page based on HTML, CSS, and JavaScript.
To ensure that visitors have a good experience, a script named personalizeewebsiteCotent needs to be executed when the webpage is fully loaded (HTML content and all related files), in order to do some custom initialization.
Which statement should be used to call personalizeWebsiteContent based on the above business requirement?
- A. Window, addEventListener('load', personalizewebsiteContent);
- B. Window, addEventListener('onload', personalizewebsiteContent);
- C. Document, addEventListener ('oDCMContentLoaded' , personalizewensiteContent);
- D. Document,addEventListener ('DCMContentLoaded' , personalizeWebsiteContent);
Answer: A
NEW QUESTION 32
What are two unique feature of function defined with a fat arror as compared to normal functional definition?
Choose 2 answers
- A. If the function has a single expression in the function body, the expression will be evaluated and implicitly returned.
- B. The function uses the this from the enclosing scope.
- C. The function generation its own this making it useful for separating the function's scope its enclosing scope
- D. The function receives an argument that is always in scope, called parent this, which is the enclosing lexical scope
Answer: A
NEW QUESTION 33
A developer needs to test this functions:
Which two assert statements are valid tests for this function?
- A. Console.assert(sum3 ([-3, 2]) -1) ;
- B. Console.assert(sum3 (['hello' 2, 3, 4]) NaN);
- C. Console.assert(sum3((1, '2' ]) 12 );
- D. Console.assert(sum3([0]) 0) ;
Answer: A,C
NEW QUESTION 34
Given the requirement to refactor the code above to JavaScript class format, which class definition is correct?
A)
B)
C)
D)
- A. Option D
- B. Option B
- C. Option A
- D. Option C
Answer: C
NEW QUESTION 35
Refer to the code below:
What is the result of running line 05?
- A. Only apromise runs.
- B. Apromise and bpromise run in parallel.
- C. Neither aPromise or bPromise runs.
- D. aPromise and bPromise run sequentially.
Answer: C
NEW QUESTION 36
Given the requirement to refactor the code above to JavaScript class format, which class definition is correct?
- A.
- B.
- C.
- D.
Answer: D
NEW QUESTION 37
Given a value, which three options can a developer use to detect of the value is NaN?
Choose 3 answers
- A. Object , is ( value, NaN)
- B. Value I== value
- C. Number , isNaN(value)
- D. Value == Number, NaN
- E. Value == NaN
Answer: A,C,E
NEW QUESTION 38
A developer has a web server running with Node.js. The command to start the web server is node server.js. The web server started having latency issues. Instead of a one second turnaround for web requests, the developer now sees a five second turnaround.
Which command can the web developer run to see what the module is doing during the latency period?
- A. NODE_DEBUG=true node server.js
- B. NODE_DEBUG=http,https node server.js
- C. DEBUG=true node server.js
- D. DEBUG=http, https node server.js
Answer: C
NEW QUESTION 39
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 numbers in the array, and the test passes.
A different developer made changes to the behavior of sum3 to instead sum only the first two numbers present in the array.
Which two results occur when running this test on the updated sum3 function?
Choose 2 answers
- A. The line 02 assertion fails.
- B. The line 05 assertion fails.
- C. The line 02 assertion passes.
- D. The line 05 assertion passes.
Answer: B,C
NEW QUESTION 40
The developer wants to test the code:
Const toNumber = (strOrNum) => + strOrNum;
Which two tests are most accurate for this code? Choose 2 answers
- A. Console. Assert (Number,isNaN (toNumber ( ) ));
- B. Console.assert (toNumber ('2') === 2 ) ;
- C. Console,assert (toNumber ( ) === NaN ) ;
- D. Console,assert (toNumber ( '-3') < 0);
Answer: B,C
NEW QUESTION 41
In which situation should a developer include a try... catch block around their function call?
- A. The function has an error that should not be silenced.
- B. The function contains scheduled code.
- C. The function might raise a runtime error that needs to be handled.
- D. The function results in an out of memory issue.
Answer: C
NEW QUESTION 42
Which two console logs output NaN?
Choose 2 answers | |
- A. console.loeg(10 / 'five');
- B. console.log(10 / Number('5) ) ;
- C. console.log(parseInt ' ("two')) ;
- D. console.log(10 / 0);
Answer: A,C
NEW QUESTION 43
Given the following code:
Let x = ('15' +10) +2;
What is the value of x?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 44
Which two console logs out NaN?
Choose 2 answers
- A. Console.log(10 / Number ('5) );
- B. Console.log(parseint ('two') ) ;
- C. Console.log(10 / 'five' ') ;
- D. Console.log (10 / 0);
Answer: B,C
NEW QUESTION 45
......
New Real JavaScript-Developer-I Exam Dumps Questions: https://drive.google.com/open?id=1gHkGNYxIBacilkKKRW1W9vyggMEwWpDs
Pass Your JavaScript-Developer-I Exam Easily with Accurate PDF Questions: https://www.actualtests4sure.com/JavaScript-Developer-I-test-questions.html
