Event handler for Form

The onSubmit event handler is used to execute specified JavaScript code whenever the user submits a form, and as such, is included within the HTML <FORM> tag. The onSubmit event handler uses the following properties of the Event object:

type - indicates the type of event.
target - indicates the target object to which the event was sent.

In the following example, the onSubmit event handler calls the 'submitEvent' function:

Code:
<FORM onSubmit="submitEvent()">

If you want to validate the information in the form and only allow it to be submitted if it meets your requirements, you will need to put a return statement that returns false in the event handler, as in the following example using the 'validate' function:

Code:
<FORM onSubmit="return validate(this)">