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Salesforce Certified JavaScript Developer I Exam Sample Questions (Q119-Q124):

NEW QUESTION # 119
Which JavaScript method can be used to serialize an object into a string and deserialize a JSON string into an object, respectively?

A. JSON.Stringify and JSON.parse
B. JSON.parse and JSON deserialize
C. JSON.encode and JSON decode
D. JSON,serialize and JSON,desrialize

Answer: D

NEW QUESTION # 120
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. Get (''email'')
B. userInformation ( ''email'' )
C. userInformation. email
D. userInformation(email)

Answer: B,C

NEW QUESTION # 121
Refer to code below:
console.log(0);
setTimeout(() => (
console.log(1);
});
console.log(2);
setTimeout(() => {
console.log(3);
), 0);
console.log(4);
In which sequence will the numbers be logged?

A. 02431
B. 02413
C. 0
D. 01234

Answer: A

NEW QUESTION # 122
Refer to the code below:

What is the result when the Promise in the execute function is rejected?

A. Rejected1 Rejected2 Rejected3 Rejected Rejected Rejected4
B. Rejected
C. Resolved1 Resolved2 Resolved3Resolved4
D. Rejected Resolved

Answer: D

NEW QUESTION # 123
developer creates a new web server that uses Node.js. It imports a server library that uses events and callbacks for handling server functionality.
The server library is imported with require and is made available to the code by a variable named server. The developer wants to log any issues that the server has while booting up.
Given the code and the information the developer has, which code logs an error at boost with an event?

A. Server.catch ((server) => {
console.log('ERROR', error);
});
B. Server.on ('error', (error) => {
console.log('ERROR', error);
});
C. Server.error ((server) => {
console.log('ERROR', error);
});
D. Try{
server.start();
} catch(error) {

Answer: B

Explanation:
console.log('ERROR', error);
}

NEW QUESTION # 124
......

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