MACROMEDIA COLDFUSION MX 61-DEVELOPING COLDFUSION MX, Develop Manual

Page: 616 / 860

616 Chapter 27: Building Dynamic Forms
Reviewing the code
The following table describes the highlighted code and its function:
Code Description
<script>
<!--
function testbox(form) {
Ctrl = Form.inputbox1;
if (Ctrl.value == "" ||
Ctrl.value.indexOf ('@', 1) == -1 ||
Ctrl.value.indexOf ('.', 3) == -1)
{
return (false);
}
else
{
return (true);
}
}
//-->
</script>
JavaScript code that tests for valid entry in
the text box. The if statement checks to
making sure that the field is not empty and
contains an at sign (@) that at least the
second character and a period (.) that is at
least the fourth character.
onvalidate="testbox" Calls the JavaScript testbox function to
validate entries in this control.
message="Sorry, your entry is not a valid
email address."
Displays a message if the validation
function returns a false value.