Question

Which of the following refers to an event handler?
a.)Handler
b.)Event
c.)Variable
d.)Function

Answer 1

Concept Introduction:-

Data which has been handled and organised and structured and putting data into context makes decisions easier.

Explanation:-

We have been provided a question

We need to choose from the given alternatives the correct option

The correct option is $d.)$ Function

It is because an event handler is in general, a function that handles or responds to an event. For example onclick, onkeypress, onload etc are event handler functions. In programming, an event handler is a callback routine that operates asynchronously once an event takes place. It dictates the action that follows the event. The programmer writes a code for this action to take place. An event is an action that takes place when a user interacts with a program.

Final Answer:-

The correct answer is option $d.)$ Function.

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Answer 2

Answer:

Function refers to an event handler.

Option (d) is correct.

Explanation:

Event Handling

You might have heard the term event in programming. An event is a specific situation in which the system performs a particular task.

For example:

When you click the mouse button or press a key on the keyboard etc.

But who will handle all those events? Well, for handling the events we have event handlers.

Event Handlers

Event handlers take control and decide what to do when an event has been fired.

For every event, the programmer writes functions that are triggered when an event occurs.

For example; When the user hovers on a link, its color changes. Or when a key is pressed, a new page is opened, etc.

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