Front-end Asynchronous JavaScript Quiz
Authored by minh nguyễn
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main disadvantage of using a sync callback?
No guaranteed that callback function is called exactly 1
Hard to handle error in sync callback
Coding styling is ugly when working with multiple callback
No guaranteed that library code will call cb function
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main advantage of using a Promise?
No guaranteed that callback function is called exactly 1
Hard to handle error in sync callback
Built-in error handling mechanism
No guaranteed that library code will call cb function
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the 'async' keyword in async/await syntax?
To represent the eventual completion or failure of an asynchronous operation
To await concurrent requests
To make the function asynchronous
To handle error in async operations
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main disadvantage of using a Promise?
Coding styling is ugly when working with multiple callback
Hard to handle error in sync callback
Can't reuse users
No guaranteed that callback function is called exactly 1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the 'await' keyword in async/await syntax?
To await concurrent requests
To represent the eventual completion or failure of an asynchronous operation
To make the function asynchronous
To handle error in async operations
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main disadvantage of using a sync callback?
Coding styling is ugly when working with multiple callback
No guaranteed that library code will call cb function
Hard to handle error in sync callback
No guaranteed that callback function is called exactly 1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main advantage of using a Promise?
Built-in error handling mechanism
No guaranteed that callback function is called exactly 1
Hard to handle error in sync callback
No guaranteed that library code will call cb function
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