Events are generated when specific actions occur. With JavaScript you can provide functions to handle these events.
The basic form of an event handler is:
<HTML_TAG OTHERATTRIBUTES eventHandler="JavaScript Function">
| Event | Description |
| blur | Occurs when input focus is removed from a form element (when the user clicks outside a field) |
| click | Occurs when the user clicks on a link or form element |
| change | Occurs when the value of a form field is changed by the user |
| focus | Occurs when input focus is given to a form element |
| load | Occurs when a page is loaded |
| mouseover | Occurs when the user moves the pointer over a hypertext link |
| select | Occurs when the user selects a form element's field |
| submit | Occurs when a form is submitted (i.e., when the users clicks on a submit button) |
| unload | Occurs when the users leaves a page |
Input focus occurs when the user clicks on or in form element or field, or by tabbing to that field.
| Object | Events |
| Selection List | onBlur, onChange, onFocus |
| Text element | onBlur, onChange, onFocus, onSelect |
| Textarea element | onBlur, onChange, onFocus, onSelect |
| Button element | onClick |
| Checkbox | onClick |
| Radio button | onClick |
| Hypertext link | onClick, onMouseOver, onMouseOut |
| Reset button | onClick |
| Submit button | onClick |
| Document | onLoad, onUnload |
| Window | onLoad, onUnload |
| Form | onSubmit |