[May 16, 2024] Latest JavaScript-Developer-I Exam with Accurate Salesforce Certified JavaScript Developer I Exam PDF Questions
Practice To JavaScript-Developer-I - GuideTorrent Remarkable Practice On your Salesforce Certified JavaScript Developer I Exam Exam
To be eligible to take the Salesforce JavaScript-Developer-I certification exam, candidates must have experience in developing custom applications using JavaScript and must have a solid understanding of the Salesforce platform, including its data model, security model, and user interface. Candidates must also have completed the Salesforce Platform Developer I certification exam, which validates their knowledge of the Salesforce platform and its development tools. The JavaScript-Developer-I certification exam is an excellent way for developers to enhance their skills, demonstrate their expertise, and increase their career opportunities within the Salesforce ecosystem.
The Salesforce JavaScript-Developer-I exam consists of 60 multiple-choice questions that are designed to test your knowledge of JavaScript concepts, as well as your ability to apply those concepts in a Salesforce environment. JavaScript-Developer-I exam is timed and you will have 105 minutes to complete it. To pass the exam, you will need to score at least 68% or higher.
Salesforce JavaScript-Developer-I Certification Exam is a challenging but rewarding certification that can help developers enhance their skills and advance their careers. By passing JavaScript-Developer-I exam, developers can demonstrate their expertise in JavaScript programming, web development, and the Salesforce Lightning platform, and set themselves apart as leaders in their field.
NEW QUESTION # 52
Refer to the code declarations below:
Which three expressions return the string JavaScript?
Choose 3 answers
- A. Str1.join (str2);
- B. $(str1) $ (str2} ';
- C. Str1.concat (str2);
- D. Concat (str1, str2);
- E. Str1 + str2;
Answer: B,C,E
NEW QUESTION # 53
Refer to the code:
Given the code above, which three properties are set pet1?
Choose 3 answers:
- A. Type
- B. Owner
- C. Name
- D. Size
- E. canTalk
Answer: A,D,E
NEW QUESTION # 54
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, 4, 5, 4]
- B. [1,2, 3, 4, 5, 4, 4]
- C. [1, 2, 3, 4, 4, 5, 4]
- D. [1, 2, 3, 5]
Answer: C
NEW QUESTION # 55
Which two console logs outputs NaN ?
Choose 2 answers
- A. console.log(parseInt('two'));
- B. console.log(10/ ''five);
- C. console.log(10/ Number('5'));
- D. console.log(10/0);
Answer: A,B
NEW QUESTION # 56
Refer to the code below:
Const resolveAfterMilliseconds = (ms) => Promise.resolve (
setTimeout (( => console.log(ms), ms ));
Const aPromise = await resolveAfterMilliseconds(500);
Const bPromise = await resolveAfterMilliseconds(500);
Await aPromise, wait bPromise;
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 # 57
A developer wants to create a simple image upload in the browser using the File API. The HTML is below:
The JavaScript portion is:
In lines 04 and 08, which code allows the user to select an image from their local computer, and to display the image in the browser?
- A. 04 const reader = new FileReader ( ) ;
08 if (file) reader , createAsDataURL (file) ; - B. 04 const reader = new FileReader ( ) ;
08 if (file) URL , createObjectURL (file) ; - C. 04 const reader = new File ( ) ;
08 if (file) URL , createObjectURL (file) ; - D. 04 const reader = new File ( ) ;
08 if (file) ,reader, readerAsDataURL (file) ;
Answer: C
NEW QUESTION # 58
Refer to the HTML below:
Which JavaScript statement results in changing ''Tony'' to ''Mr. T. ''?
- A. Document.querySelectorAll ( '#main li, Tony ' ) innerHTNL = Mr, T , ' ;
- B. Document.querySelector (' '#main li:second-child') innerHTML, = Mr, T, ';
- C. Document.querySelectorAll ('#main # TONY ') , innerHTML = Mr, T , ' ;
- D. Document.querySelector (''#main li:nth-child (2) ') , innerHTML = 'Mr . T ';
Answer: C
NEW QUESTION # 59
Refer to the code below:
Which statement allows a developer to cancel the scheduled timed function?
- A. ClearTimeout (timeFunction);
- B. removeTimeout (timeFunction) ;
- C. ClearTimeout (timerId) ;
- D. removeTimeout (timerId) ;
Answer: B
NEW QUESTION # 60
Refer to the code below:
When does promise. Finally on line 08 get called?
- A. When resolved
- B. When resolved and settled
- C. When resolved or rejected
- D. When rejected
Answer: C
NEW QUESTION # 61
A developer has code that calculates a restaurant bill, but generates incorrect answers
while testing the code:
function calculateBill ( items ) {
let total = 0;
total += findSubTotal(items);
total += addTax(total);
total += addTip(total);
return total;
}
Which option allows the developer to step into each function execution within calculateBill?
- A. Calling the console.trace (total) method on line 03.
- B. Using the debugger command on line 03
- C. Using the debugger command on line 05.
- D. Wrapping findSubtotal in a console.log() method.
Answer: C
NEW QUESTION # 62
Universal Containers recently launched its new landing page to host a crowd-funding campaign. The page uses an external library to display some third-party ads. Once the page is fully loaded, it creates more than 50 new HTML items placed randomly inside the DOM, like the one in the code below:
All the elements includes the same ad-library-item class, They are hidden by default, and they are randomly displayed while the user navigates through the page.
- A. Use the browser console to execute a script that prevents the load event to be fired.
- B. Use the DOM inspector to prevent the load event to be fired.
- C. Use the DOM inspector to remove all the elements containing the class ad-library-item.
- D. Use the browser to execute a script that removes all the element containing the class ad-library-item.
Answer: D
NEW QUESTION # 63
Refer to the following code:
Which two statement could be inserted at line 17 to enable the function call on line 18?
Choose 2 answers
- A. Object.assign (leo, tony);
- B. Object.assign (leo. Tiger);
- C. leo.prototype.roar = ( ) =>( console.log('They\'re pretty good!'); };
- D. leo.roar = () => { console.log('They\'re pretty good!'); );
Answer: A,D
NEW QUESTION # 64
Which statement accurately describes an aspect of promises?
- A. Agruments for the callback function passed to .then ( ) are optional.
- B. In a , them ( ) function, returning results is not necessary since callback will catch the result of a previous promise.
- C. .Them ( ) cannot be added after a catch.
- D. .then ( ) manipulates and returns the original promise.
Answer: A
NEW QUESTION # 65
myArraym can have one level, two levels, or more levels.
Which statement flattens myArray when it can be arbitrarily nested?
- A. myArray. reduce ((prev, curr) => prev.concat(curr) [ ]);
- B. [ ] .concat {. . .myArray) ;
- C. myArray. join (","). split (",");
- D. myArray.flat(Infinity);
Answer: A
NEW QUESTION # 66
Refer to the code snippet:
A developer writes this code to return a message to a user attempting to register a new username. If the username is available, a variable named msg is declared and assigned a value on line 03.
What is the return of msg when getivelibilityMessage ('' bewUserName') is executed and getAvailability (''newUserName'') returns false?
- A. ''Username available''
- B. ''msg is not defined''
- C. ''newUsername''
- D. undefined
Answer: D
NEW QUESTION # 67
Given the code below:
Which method can be provide a visual representation of the list if users and to allow sorting by the name or email attributes.
- A. Console.group (userList);
- B. Console.groupCollapsed (userslist);
- C. Console.info (userlist);
- D. Console,table (userslist);
Answer: A
NEW QUESTION # 68
Given the code below:
What is logged to the console'
- A. 1 2 5 3 4
- B. 2 5 3 4 1
- C. 1 2 3 4 5
- D. 2 5 1 3 4
Answer: B
NEW QUESTION # 69
Which javascript methods can be used to serialize an object into a string and deserialize a JSON string into an object, respectively?
- A. JSON.serialize and JSON.deserialize
- B. JSON.encode and JSON.decode
- C. JSON.stringify and JSON.parse
- D. JSON.parse and JSON.deserialize
Answer: C
NEW QUESTION # 70
Refer to the expression below:
Let x = ('1' + 2) == (6 + 2) ;
How should this expression be modified to ensure that a evaluated to false?
- A. Let x = (1' + '2') === (6 / 2) ;
- B. Let x = (1' + '2') == (6 + 2) ;
- C. Let x = (1' + '2') == ('6' / 2) ;
- D. Let x = (1' + '2') === (6 + 2) ;
Answer: D
NEW QUESTION # 71
A developer creates a generic function to log custom messages in the console. To do this, the function below is implemented.
01 function logStatus(status){
02 console./*Answer goes here*/{'Item status is: %s', status};
03 }
Which three console logging methods allow the use of string substitution in line 02?
- A. Info
- B. Error
- C. Log
- D. Message
- E. Assert
Answer: A,E
NEW QUESTION # 72
Refer to the code below:
Which code change should be made for the console to log only Row log when 'Click mel' is clicking?
- A. Add event,stopPropagation (); to window.onLoad event hadler.
- B. Add event,stopPropagation (); to window,onLoad event hadler.
- C. Add event,stopPropagation (); to printMessage function.
- D. Add event,stopPropagation (); to printMessage function.
Answer: A,D
NEW QUESTION # 73
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Practice To JavaScript-Developer-I - GuideTorrent Remarkable Practice On your Salesforce Certified JavaScript Developer I Exam Exam: https://drive.google.com/open?id=1-5LtlVDzRLgWk71T3UW0CrICVmyilsH1