JavaScript Event Listener [Part -2]

Event listeners for input elements in JavaScript allow developers to dynamically capture user input in real-time or upon specific actions. The change event listener triggers when the input field loses focus, providing the value entered, while the input event listener fires every time a change is made while the field is in focus. The focus event listener triggers when the input field is clicked and brought into focus, enabling the retrieval of its current value.

Additional event listeners like keyup and keydown enable capturing values as keys are pressed or released, making them useful for real-time input validation or dynamic updates. These listeners, applicable to both input fields and text areas, can be leveraged in form validations, where captured values are tested against conditions like regular expressions to ensure correct formats for inputs like emails or passwords. This enables enhanced interactivity and user experience in web forms.

For more detail, please go through - JavaScript addEventListener() with Examples