100% Accurate Answers! Mar-2023 JavaScript-Developer-I Actual Real Exam Questions
Best Value Available! 2023 Realistic Verified Free JavaScript-Developer-I Exam Questions
Average Salary for Salesforce JavaScript-Developer-I Exam Certified Professional
Salesforce JavaScript Developer roles are in great demand nowadays. The average salaries of Salesforce JavaScript Developer I exam Certified professional in:
- United State - 129,630 USD
- Europe - 63,500 Euro
- England - 60,200 POUND
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).
How to Study the Salesforce JavaScript-Developer-I Exam
The best study material one can get is the JavaScript-Developer-I practice exam dumps. To ensure good grades, do attempt the JavaScript-Developer-I practice exams. The JavaScript Developer I from Salesforce typically has 1-2 years of experience as a JavaScript developer with the following JavaScript topics.
Forms of data and operators
Control of Mistake
Conversion type (inclusive versus explicit)
Asynchronous Programming
Activities
JavaScript on the backend
Item Model Document
To prepare for this test, we advise a combination of practical experience, completion of training courses, pathways and self-study in the areas listed in the examination outline section of this examination guide.
NEW QUESTION 89
A developer creates a simple webpage with an input field. When a user enters text in the input field and clicks the button, the actual value of the field must be displayed in the console.
Here is the HTML file content:
<input type =" text" value="Hello" name ="input">
<button type ="button" >Display </button> The developer wrote the javascript code below:
Const button = document.querySelector('button');
button.addEvenListener('click', () => (
Const input = document.querySelector('input');
console.log(input.getAttribute('value'));
When the user clicks the button, the output is always "Hello".
What needs to be done to make this code work as expected?
- A. Replace line 04 with console.log(input .value);
- B. Replace line 03 with const input = document.getElementByName('input');
- C. Replace line 02 with button.addCallback("click", function() {
- D. Replace line 02 with button.addEventListener("onclick", function() {
Answer: A
NEW QUESTION 90
Refer to the code:
Given the code above, which three properties are set pet1?
Choose 3 answers:
- A. Owner
- B. Name
- C. Size
- D. canTalk
- E. Type
Answer: C,D,E
NEW QUESTION 91
Refer to the code below:
new Promise((resolve, reject) => {
const fraction = Math.random();
if( fraction >0.5) reject("fraction > 0.5, " + fraction);
resolve(fraction);
})
.then(() =>console.log("resolved"))
.catch((error) => console.error(error))
.finally(() => console.log(" when am I called?"));
When does Promise.finally on line 08 get called?
- A. When rejected
- B. When resolved and settled
- C. When resolved or rejected
- D. When resolved
Answer: C
NEW QUESTION 92
Refer to the code below:
Const myFunction = arr => {
Return arr.reduce((result, current) =>{
Return result = current;
}, 10};
}
What is the output of this function when called with an empty array ?
- A. Returns NaN
- B. Returns 10
- C. Returns 0
- D. Throws an error
Answer: B
NEW QUESTION 93
Given the code below:
const delay = async delay =>{
return new Promise((resolve,reject)=>{
console.log(1);
setTimeout(resolve,deleay);
});
};
const callDelay = async ()=>{
console.log(2);
const yup = await delay(1000);
console.log(3);
}
console.log(4);
callDelay();
console.log(5);
What is logged to the console?
- A. 4 2 1 5 3
Answer: A
NEW QUESTION 94
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. > true > false
- C. > 5 > -1
- D. > 5 > 0
Answer: A
Explanation:
NEW QUESTION 95
Which code statement below correctly persists an objects in local Storage ?
- A. const setLocalStorage = ( jsObject) => {
window.localStorage.connectObject(jsObject));
} - B. const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.setItem(storageKey, JSON.stringify(jsObject));
} - C. const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.persist(storageKey, jsObject);
} - D. const setLocalStorage = ( jsObject) => {
window.localStorage.setItem(jsObject);
}
Answer: B
Explanation:
NEW QUESTION 96
A developer is creating a simple webpage with a button. When a user clicks this button for the first time, a message is displayed.
The developer wrote the JavaScript code below, but something is missing. The message gets displayed every time a user clicks the button, instead of just the first time.
01 function listen(event) {
02 alert ( 'Hey! I am John Doe') ;
03 button.addEventListener ('click', listen);
Which two code lines make this code work as required?
Choose 2 answers
- A. On line 02, use event.first to test if it is the first execution.
- B. On line 04, use event.stopPropagation ( ),
- C. On line 04, use button.removeEventListener(' click" , listen);
- D. On line 06, add an option called once to button.addEventListener().
Answer: C,D
NEW QUESTION 97
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. ''newUsername''
- C. undefined
- D. ''msg is not defined''
Answer: C
NEW QUESTION 98
Refer to the code below:
What is the value of result when the code executes?
- A. 10 - 5
- B. 5 - 10
- C. 10 - 10
- D. 5 - 5
Answer: C
NEW QUESTION 99
Which code statement below correctly persists an objects in local Storage ?
- A. const setLocalStorage = ( jsObject) => {
window.localStorage.connectObject(jsObject));
} - B. const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.setItem(storageKey, JSON.stringify(jsObject));
} - C. const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.persist(storageKey, jsObject);
} - D. const setLocalStorage = ( jsObject) => {
window.localStorage.setItem(jsObject);
}
Answer: B
Explanation:
NEW QUESTION 100
Given the requirement to refactor the code above to JavaScript class format, which class definition is correct?
A)
B)
C)
D)
- A. Option C
- B. Option D
- C. Option A
- D. Option B
Answer: C
NEW QUESTION 101
Which statement parses successfully?
- A. JSON.parse (''foo '');
- B. JSON.parse ('' 'foo'' ');
- C. JSON.parse ('' 'foo' '');
- D. JSON.parse ('foo ');
Answer: A
NEW QUESTION 102
A developer copied a JavaScript object:
How does the developer access dan's forstName,lastName? Choose 2 answers
- A. dan,name
- B. dan,name ( )
- C. dan, firstName = dan.lastName
- D. dan,firstname ( ) + dan, lastName ( )
Answer: B,C
NEW QUESTION 103
Refer to the code below:
Let inArray - [ [1, 2] , [3, 4, 5] ];
Which two statements result in the array [1, 2, 3, 4, 5 ]?
- A. [ ]. Concat ( [...InArray] );
- B. [ ] . concat. ( ... inArray) ;
- C. [ ] . concat. Apply (inArray, [ ] );
- D. [ ] . concat. Apply ( [ ], inArray) ;
Answer: A,D
NEW QUESTION 104
Refer to the code below:
What is the value of foobDienu1 after the code executes?
- A. {'Garlic bread', Pizza' , Burger' , French fries'}
- B. {'Pizza' , Burger' , French fries '}
- C. {'Pizza' , Burger' , French fries ' , garlic bread; }
- D. {'Garlic bread'}
Answer: C
NEW QUESTION 105
......
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