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Instant Salesforce JavaScript-Developer-I Access, JavaScript-Developer-I Valid Exam Format

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Our Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I) practice exam simulator mirrors the JavaScript-Developer-I exam experience, so you know what to anticipate on JavaScript-Developer-I certification exam day. Our Salesforce Certified JavaScript Developer I Exam (JavaScript-Developer-I) practice test software features various question styles and levels, so you can customize your Salesforce JavaScript-Developer-I exam questions preparation to meet your needs.

To prepare for the Salesforce JavaScript-Developer-I Exam, candidates must have a strong understanding of JavaScript programming concepts, including data types, functions, events, and objects. They should also have knowledge of the Salesforce platform, including Apex, Visualforce, and Lightning Components. Candidates can also take the Salesforce JavaScript Developer I certification training course to gain the necessary skills and knowledge to pass the exam.

Salesforce Certified JavaScript Developer I Exam Sample Questions (Q200-Q205):

NEW QUESTION # 200
Refer to the code below
let inArray = [[1,2],[3,4,5]];
which two statements results in the array [1,2,3,4,5]?
choose 2 answer

A. [ ].concat.apply([ ],inArray);
B. [ ].concat.apply(inArray,[ ]);
C. [ ].concat([...inArray])
D. [ ].concat(...inArray);

Answer: A,D

NEW QUESTION # 201
Which code statement below correctly persists an objects in local Storage ?

A. const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.setItem(storageKey, JSON.stringify(jsObject));
}
B. const setLocalStorage = ( jsObject) => {
window.localStorage.setItem(jsObject);
}
C. const setLocalStorage = ( jsObject) => {
window.localStorage.connectObject(jsObject));
}
D. const setLocalStorage = (storageKey, jsObject) => {
window.localStorage.persist(storageKey, jsObject);
}

Answer: A

Explanation:

NEW QUESTION # 202
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 06, add an option called once to button.addEventListener().
B. On line 02, use event.first to test if it is the first execution.
C. On line 04, use button.removeEventListener(' click" , listen);
D. On line 04, use event.stopPropagation ( ),

Answer: A,C

NEW QUESTION # 203
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.trace()
B. console.timeStamp ()
C. console. timeLog ()
D. console.getTime ()

Answer: C

NEW QUESTION # 204
Given the code below:
const delay = sync delay => {
Return new Promise((resolve, reject) => {
setTimeout (resolve, delay);});};
const callDelay =async () =>{
const yup =await delay(1000);
console.log(1);
What is logged to the console?

A. 2 3 1
B. 2 1 3
C. 1 3 2
D. 1 2 3

Answer: A

NEW QUESTION # 205
......

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