Web Bootcamp Day 3

Which method is used to add an event listener to an HTML element in JavaScript?

• addEventListener

• attachEvent

• addEvent

• setEventListener

What is event delegation in JavaScript?

• Attaching multiple event listeners to the same element

• Delegating events to child elements

• Delegating events to a common ancestor

• Adding multiple listeners for the same event

Which of these use cases is possible with event.stopPropagation()?

• Prevent the default behaviour of the event

• Stop the event from bubbling to the parent event

• Pause the event handler execution

• Stop the event from reaching the target

Which of these is a benefit of event delegation?

• It makes the code easier to read

• It makes it simpler to handle dynamic elements

• It improves the performance of the code

• It works asynchronously

In the context of Promises, what does "resolved" mean?

• It means the promise has been rejected
• It means the promise is still pending
• It means the promise has been fulfilled

• It means the promise is in the initial state

What are the three possible states of a Promise?

• Pending, Fulfilled, Rejected
• Active, Inactive, Completed
• True, False, Undefined
• Start, Running, End

What keyword is used to declare an asynchronous function in JavaScript?

• async

• await

• asyncFunction

• promise

In an async function, what does the await keyword do?

• It makes the function wait until the promise returns a result
• It immediately returns the result of a promise
• It skips the execution of the next line of code
• It throws an error if the promise is rejected

What is the difference between setTimeout and setInterval

• setTimeout and setInterval both execute a function once after a specified delay

• setTimeout executes a function repeatedly at every given time-interval, setInterval executes a function once after a specified delay
• setTimeout executes a function once after a specified delay, setInterval executes a function repeatedly at every given time-interval

• setTimeout and setInterval both execute a function repeatedly at every given time-interval

Which of the following statements about the Fetch API in JavaScript is true?

• It is used for creating and manipulating HTML elements.

• It is a method for setting timers and intervals.

• It is a modern API for making network requests.

• It is a feature used to control event propagation.