Answer & Solution
Answer: Option A
Solution:
The fail() method attaches a callback that is executed when the promise is rejected, handling errors in asynchronous operations.
Q
What does the fail() method do in jQuery promises?
Related Questions on Average
How can you handle errors in an asynchronous operation in jQuery?
A). Using the done() method
B). Using the fail() method
C). Using the always() method
D). Using the then() method
Which jQuery method is used to handle both success and failure cases of a promise?
A). done()
B). fail()
C). always()
D). then()
How can you reject a deferred object in jQuery?
A). Using the reject() method
B). Using the resolve() method
C). Using the done() method
D). Using the always() method
Which jQuery method is used to chain multiple asynchronous operations?
A). done()
B). fail()
C). then()
D). always()
How can you ensure that a callback runs only once, even if the promise is resolved multiple times?
A). Using the done() method
B). Using the fail() method
C). Using the once() method
D). Using the then() method
Which method allows you to specify multiple callbacks for different outcomes of a promise in jQuery?
A). done()
B). fail()
C). always()
D). then()
What is the purpose of the done() method in jQuery promises?
A). To handle failed operations
B). To handle completed operations
C). To handle pending operations
D). To create a new deferred object
Which method is used to define custom validation rules in jQuery?
A). validateRule()
B). addRule()
C). addMethod()
D). validateMethod()
How does event delegation handle dynamically added elements?
A). By re-attaching event handlers
B). By attaching event handlers to the parent element
C). By using the .bind() method
D). By using the .on() method with a selector
What is a promise in jQuery?
A). An object that represents a completed task
B). An object that represents a pending task
C). An object that represents an asynchronous operation
D). An object that represents a synchronous operation