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NEW QUESTION 114
A developer has an is Dog function that takes one argument cat. They want to schedule the function to run every minute.
What is the correct syntax for scheduling this function?
- A. setInterval(isDog, 60000,'cat');
Answer: A
NEW QUESTION 115
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 the array after the code executes?
- A. [1, 2, 3, 4, 4, 5, 4]
- B. [1, 2, 3, 5]
- C. [1, 2, 3, 4, 5, 4]
- D. [1, 2, 3, 4, 5, 4, 4]
Answer: C
NEW QUESTION 116
Refer to the code below:
Which two function can replace line 01 and return 58 to sum? Choose 2 answers
- A. const addBy = (num1) num1 + num2
- B. const addBy = function (num1) {
Return function (num2) {
}
} - C. const addBy = num1 (num2) => num1 + num2 ;
- D. Const addby = function (num1) (
Return function (num2) (
}
}
Answer: B,C
NEW QUESTION 117
Which code statement below correctly persists an object in localStorage?
- A. const setLocalstorage = (storageKey , jsobject) => (
windows. LocalStorage,setitem(storagekey. jSON,string
) - B. Const setLocalstorage = (jsobject ) => (
Window .localstorage .setitem (jsobject) ; - C. const setLocalstorage = (jsobject) =>
Windows.localstorage.connectobject(jsObject); - D. Const setlocalstorage = (storagekey, jsObject) => (
Window. Localstorage.persist (storagekey, jsObject);
)
Answer: C
NEW QUESTION 118
Refer to the following code:
<html lang="en">
<body>
<div onclick = "console.log('Outer message') ;">
<button id ="myButton">CLick me<button>
</div>
</body>
<script>
function displayMessage(ev) {
ev.stopPropagation();
console.log('Inner message.');
}
const elem = document.getElementById('myButton');
elem.addEventListener('click' , displayMessage);
</script>
</html>
What will the console show when the button is clicked?
- A. Inner message
Outer message - B. Outer message
Inner message - C. Inner message
- D. Outer message
Answer: C
NEW QUESTION 119
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: A,D
NEW QUESTION 120
Cloud Kicks has a class to represent item for sale in an online store, as shown below:
A new business requirement comes in that request a clothingitem class, that should have all of the properties and methods of the item class, but will also have properties that are specific top clothes.
Which line of code properly declares the clothingitem class such that it inherits from item?
- A. Class clothingitem extends item (
- B. Class clothing item super item (
- C. Class Clothingitem (
- D. Class clothingitem implements item (
Answer: A
NEW QUESTION 121
Given the JavaScript below:
01 function filterDOM (searchString) {
02 const parsedSearchString = searchString && searchString.toLowerCase() ;
03 document.quesrySelectorAll(' .account' ) . forEach(account => (
04 const accountName = account.innerHTML.toLOwerCase();
05 account. Style.display = accountName.includes(parsedSearchString) ? /*Insert code*/;
06 )};
07 }
Which code should replace the placeholder comment on line 05 to hide accounts that do not match the search string?
- A. ' Block ' : ' none '
- B. ' name ' : ' block '
- C. ' visible ' : ' hidden '
- D. ' hidden ' : ' visible '
Answer: A
NEW QUESTION 122
A test has a dependency on database.query. During the test the dependency is replaced
with an object called database with the method, query, that returns an array. The
developer needs to verify how many times the method was called and the arguments
used each time.
Which two test approaches describe the requirement?
Choose 2 answers
- A. Black box
- B. Mocking
- C. White box
- D. Integration
Answer: B,C
NEW QUESTION 123
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 A
- C. Option B
- D. Option D
Answer: B
NEW QUESTION 124
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. try{
ws.connect (( ) => {
console.log('connected to client'); }); - B. ws.connect (( ) => {
console.log('connected to client'); }).catch((error) => { console.log('ERROR' , error); }}; - C. ws.on ('connect', ( ) => { console.log('connected to client'); }}; ws.on('error', (error) => { console.log('ERROR' , error); }};
- D. ws.on ('connect', ( ) => {
console.log('connected to client'); ws.on('error', (error) => { console.log('ERROR' , error); });
});
Answer: C
Explanation:
} catch(error) { console.log('ERROR' , error); };
}
NEW QUESTION 125
A developer wants to use a try...catch statement to catch any error that countSheep () may throw and pass it to a handleError () function.
What is the correct implementation of the try...catch?
A)
B)
C)
D)
- A. Option
- B. Option
- C. Option
- D. Option
Answer: B
NEW QUESTION 126
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 127
Given the JavaSript below:
Which code should replace the placeholder comment on line 05 to hide accounts that do not match the search string?
- A. none' ; 'block '
- B. 'hidden'; 'visible'
- C. 'Visible' ; hidden'
- D. 'Block' ; 'none'
Answer: D
NEW QUESTION 128
Refer to code below:
Const objBook = {
Title: 'Javascript',
};
Object.preventExtensions(objBook);
Const newObjBook = objBook;
newObjectBook.author = 'Robert';
What are the values of objBook and newObjBook respectively ?
- A. {author: "Robert", title: "javaScript}
Undefined - B. [title: "javaScript"] [title: "javaScript"]
- C. {author: "Robert"}
{author: "Robert", title: "javaScript} - D. {author: "Robert", title: "javaScript}
{author: "Robert", title: "javaScript}
Answer: B
NEW QUESTION 129
A developer copied a JavaScript object:
How does the developer access dan's forstName,lastName? Choose 2 answers
- A. dan, firstName = dan.lastName
- B. dan,firstname ( ) + dan, lastName ( )
- C. dan,name ( )
- D. dan,name
Answer: A,C
NEW QUESTION 130
......
How much Salesforce JavaScript-Developer-I Exam Cost
The price of the Salesforce JavaScript Developer I certification is $200 USD, for more information related to the Salesforce JavaScript-Developer-I Exam please visit Salesforce website.
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