When you go to a website, you can click on text, images, and links, move your mouse over things, and so on. These are examples of events in JavaScript.
We can write our event handlers in either JavaScript or VBScript, and we can use the value of the event tag attribute to point to these event handlers. The events in XHTML 1.0 are the same as those in the HTML 4.01 specification.
The <body> and <frameset> Level Events
There are only two attributes that can be used to run any JavaScript or VBScript code when a document-level event happens.
| Attribute | Value | Description |
|---|---|---|
| onload | Script | When an XHTML file loads, a script runs. |
| onunload | Script |
When an XHTML document stops loading, a script is run.
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The <form> Level Events
There are six attributes that happen whenever any event at the form level happens.
| Attribute | Value | Description |
|---|---|---|
| onchange | Script | When the element changes, the code is run. |
| onsubmit | Script |
It is carried out when the form is sent.
|
| onreset | Script | Whenever the form is cleared, it is run. |
| onselect | Script | Whenever the element is chosen, the code is run. |
| onblur | Script | When the element loses attention, it is activated. |
| onfocus | Script | When the element receives focus, the code is run. |
Keyboard Events
There are three things that can happen when you use the keyboard. The keyboard events are not allowed in the base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, and title elements.
| Attribute | Value | Description | |
|---|---|---|---|
| onkeydown | Script | Once the user presses and releases the corresponding key on the keyboard, this action is carried out. | |
| onkeypress | Script | When the finger is lifted off the keyboard, something occurs. | |
| onkeyup | Script | This is executed when the user release the keyboard button. |
Mouse Events
There are some mouse-driven events that run when the mouse touches an HTML tag. These events are not allowed in the base, bdo, br, frame, frameset, head, html, iframe, meta, param, script, style, and title elements.
| Attribute | Value | Description |
|---|---|---|
| onclick | Script | A single click of the mouse to execute code. |
| ondblclick | Script | A mouse double-click to execute code.. |
| onmousedown | Script | when mouse button is pressed to execute code.. |
| onmousemove | Script | When mouse pointer moves to execute code.. |
| onmouseout | Script | When mouse pointer moves out of an element to execute code.. |
| onmouseover | Script | When mouse pointer moves over an element to execute code.. |
| onmouseup | Script | When mouse button is released to execute code.. |