What is a change event in JavaScript?

alert ("The text has been changed."); The change event occurs when the value of an element has been changed (only works on , and elements). The change () method triggers the change event, or attaches a function to run when a change event occurs. Note: For select menus, the change event occurs when an option is selected.

What happens if you click on trigger a change event in jQuery?

After this code executes, clicks on Trigger the handler will also alert the message. The message will display twice, because the handler has been bound to the change event on both of the form elements. As of jQuery 1.4, the change event bubbles in Internet Explorer, behaving consistently with the event in other modern browsers.

What is event object in jQuery?

It's also important to note that the event object contains a property called originalEvent, which is the event object that the browser itself created. jQuery wraps this native event object with some useful methods and properties, but in some instances, you'll need to access the original event via event.originalEvent for instance.

How jQuery events are normalized?

jQuery's event system normalizes the event object according to W3C standards. The event object is guaranteed to be passed to the event handler. Most properties from the original event are copied over and normalized to the new event object. The jQuery.Event constructor is exposed and can be used when calling trigger. The new operator is optional.