form validation using onClick

shun · July 6th, 2003, 7:00 PM

im trying to write a script that will check all fields of a form to make sure theya re filled out. when the user clicks the submit button, if they are not all filled out an alert pops us informing them to fill out all fields. i have the alert working and the validation is correct but, the form submits whether the alert pops up or not. how do i get the form to not submit if the alert pops up?

**EliteGeeks.com** · July 6th, 2003, 7:35 PM

http://developer.netscape.com/docs/example...l/overview.html

**patrickb** · July 11th, 2003, 8:30 PM

If there is no particular reason for using the onClick event, I would recommend removing it and adding an onSubmit event to the <FORM> tag itself, with the following format:

<form action="blah.htm" method="get" onSubmit="return yourValidateFunction();">

then the yourValidateFunction() would check the form, and if anything wasnt right, it should return false, otherwise it would return true. Just make sure that you put the return before the function name in the onSubmit. Anytime a return false is encountered there, the form will not submit.

Patrick

July 6th, 2003, 7:00 PM	#1 (permalink)
shun Registered User Seasoned Poster Joined in May 2003 60 posts Gave thanks: 0 Thanked 0 times	im trying to write a script that will check all fields of a form to make sure theya re filled out. when the user clicks the submit button, if they are not all filled out an alert pops us informing them to fill out all fields. i have the alert working and the validation is correct but, the form submits whether the alert pops up or not. how do i get the form to not submit if the alert pops up? __________________ "if that cant take a joke, f*** em" - tucker max why things suck

July 6th, 2003, 7:35 PM	#2 (permalink)
EliteGeeks.com Surpass Fan Excelling Contributor Joined in May 2003 Lives in Las Vegas, Nevada Hosted on Dime9 632 posts Gave thanks: 0 Thanked 0 times	http://developer.netscape.com/docs/example...l/overview.html __________________ Disclamer: This is not a legal document. As with all information transfered via the internet, this message was subject to possible contamination and tampering I hold myself harmless as to its content as at appears at its intended destination.

July 11th, 2003, 8:30 PM	#3 (permalink)
patrickb the one who was Super #1 Joined in Jul 2003 Lives in Memphis 1,967 posts Gave thanks: 0 Thanked 3 times	If there is no particular reason for using the onClick event, I would recommend removing it and adding an onSubmit event to the <FORM> tag itself, with the following format: <form action="blah.htm" method="get" onSubmit="return yourValidateFunction();"> then the yourValidateFunction() would check the form, and if anything wasnt right, it should return false, otherwise it would return true. Just make sure that you put the return before the function name in the onSubmit. Anytime a return false is encountered there, the form will not submit. Patrick __________________ Patrick Warnings: The program(s) might crash unexpectedly or behave otherwise strangely. (But of course, so do many commercial programs on Windows.) --www.gimp.org

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