Events in Javascript

  1. What is events in js.?
  2. What are diiferent types of events.?
  3. What does addEventListener do.?
  4. What does alert function does in js.?
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  1. JavaScript Events The change in the state of an object is known as an Event

  2. An HTML event can be something the browser does, or something a user does

  3. An event listener is a JavaScript’s procedure that waits for the occurrence of an event .

  4. Use the alert method to display information that we want users to acknowledge.

  1. Events in JavaScript are actions or occurrences that happen in the browser or on a web page, such as a user clicking a button or scrolling the page. JavaScript code can be used to respond to these events and trigger specific actions or behaviors.

1.When the page loads, it is called an event
2. onchange
on click
onmouseover
onkeydown
onload

  1. attaches an event handler to an element without overwriting existing event handlers.

  2. display text in a dialog box that pops up on the screen

  1. There are many different types of events in JavaScript, including:
    Mouse event
    keyboard event
    window event
    HTML event
    Form event

A1- In JavaScript, an event is an action or occurrence that happens on a web page or within a web application, such as a user clicking a button, typing in a text field, or the page finishing loading.

A2 - There are many types of events in JavaScript, including:

  1. Mouse events: These events occur when a user interacts with a mouse, such as clicking, hovering, or dragging.
  2. Keyboard events: These events occur when a user interacts with a keyboard, such as typing or pressing keys.
  3. Form events: These events occur when a user interacts with a form, such as submitting or resetting the form.
  4. Focus events: These events occur when an element receives or loses focus, such as when a user clicks on or tabs to an element.
  5. Load events: These events occur when a web page or application finishes loading.
    these are the some of the example of type of events

A3 - The addEventListener method is used to register an event listener on a specific element. It takes two arguments: the type of event to listen for (e.g., “click” or “keyup”) and a function that should be executed when the event occurs. The function can take an event object as an argument, which contains information about the event that occurred.

A4 - The alert function in JavaScript displays a message in a pop-up dialog box. It takes a string argument that specifies the message to be displayed. The user must click “OK” to dismiss the dialog box and continue interacting with the web page or application. The alert function is often used for simple notifications or error messages.

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  1. JavaScript’s interaction with HTML is handled through events that occur when the user or the browser manipulates a page
  2. onmouseover, onchnage, onload, onclick,
  3. it allows you to add event listeners on any HTML DOM object such as HTML elements, the HTML document, the window object, or other objects that support events.
  4. it is uses as display text in a dialog box that pops up on the screen

1.events are actions that happen as a user clicking of a button
2 mouse ,keyboard ,form , media events
3 addEventListener is a method in JavaScript that allows developers to attach an event listener to an HTML element

  1. The addEventListener() method in JavaScript is used to add an event listener to an HTML element. It takes two arguments: the type of event to listen for (such as “click” or “submit”) and the function to be called when the event occurs.

  2. The alert() function in JavaScript is used to display a dialog box with a message and an “OK” button.

1.Ans:- JS interaction with html is handle events that occur when the user or browser manipulates a page. When the page loads, it is called an events.
2.Ans:- onchange, onclick, onmouseover.
3.Ans:- add an many event to the same element, without existing event.
4.Ans:- This function will display text in a dialog box that pops up on the screen.

  1. events are used to interact javascript with HTML .
  2. the different types of events are onclick, onblur, onmouseover, onmouseout, etc,
  3. addEventListener are used to allow you to add events on any HTML DOM objects.
  4. alert function will display text in a dialog box that pops up on the screen
  1. the event are use to react or interact a html document .
  2. onclick onblur onchange onmouseover onmouseout
    3.addEventListener are used to change or add new thing on html object.