Question

What are JavaScript event handlers? Explain the purpose of onmouseover.

Hint:

To keep your HTML files clean and maintainable, avoid using inline event attributes. Instead, attach event listeners in your external JavaScript file using the addEventListener() method: element.addEventListener('mouseover', callbackFunction);

Answer 1

Step 1: Defining JavaScript Event Handlers:
Event handlers are specialized properties of HTML DOM elements that listen for specific user interactions or system triggers. When an event (such as a click, keystroke, mouse movement, or page load) occurs, the browser calls a designated block of JavaScript code (a callback function) associated with that event handler to update the page dynamically without reloading.

Step 2: Explaining the Purpose of onmouseover:
The onmouseover event handler is triggered the exact moment a user's mouse cursor crosses the outer boundary and enters the layout area of an HTML element.
• Interactive Styling: It is commonly used to create interactive hover effects, reveal hidden dropdown menus, change image sources, or scale buttons.
• Inline Example: {

Hover over me