Test for user input

[Timm]

I have a simple php form with some user input boxes. I want to make sure the user completes the entire form before submitting the form.

Is there a way to verify data was entered as soon as a user tabs off a field?

At the time the submit button is clicked, can I prevent the form from being processed if data is missing? How?

Thanks!

Timm

[volleytotal_ch]

you need Javascript!

Is there a way to verify data was entered as soon as a user tabs off a field?

just write the following:

<input type="text" name="somename" value="" onblur"javascript:check('somename');">

and you need a javascript function "check(fieldname)"that checks if the field
document.formname.fieldname is empty or not

At the time the submit button is clicked, can I prevent the form from being processed if data is missing? How?

just add the following:

<input type="submit" value="go" onsubmit="javascript:checkform();return false;">

and you need a second javascript function that checks your required fields and if all is ok,
document.formname.submit();

BUT:
if an user has turned off javasciprt, javascript won't have any effects!
therefor it's better to use php and check for all values: if anything is missing, display an error message and the whole form again!

hth