submit event handling

[jman]

i've got an html form object in which i set the onsubmit attribute to
test something and if
it fails i don't want the submit to go thru.

<FORM ... onsubmit="if (fail) return false">

this works.

but if i do it in javascript

formObj.addEventListener( "submit", function()

{
if ( fail)
return false;

return true;
}, false )

this does not work.

can i get it to behave similar to the html code.

that is - if false do not proceed with the submit process.
thanks.

[Martin Honnen]

jman wrote:

but if i do it in javascript

formObj.addEventListener( "submit", function()

{
if ( fail)
return false;

return true;
}, false )

this does not work.

Call preventDefault on the event object e.g.
formObj.addEventListener("submit",
function (evt) {
if (fail) {
evt.preventDefault();
}
},
false
);
--

Martin Honnen
http://JavaScript.FAQTs.com/

[Thomas 'PointedEars' Lahn]

jman wrote:

<FORM ... onsubmit="if (fail) return false">

this works.

but if i do it in javascript

formObj.addEventListener( "submit", function()

{
if ( fail)
return false;

return true;
}, false )

this does not work.

can i get it to behave similar to the html code.

that is - if false do not proceed with the submit process.

formObj.addEventListener("submit",
function(e) {
if (fail)
{
e.preventDefault();
}
},
false);

<http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-flow-cancelation>

However, there is no point in using addEventListener() here.

Your Shift key is borken.
PointedEars
--
Anyone who slaps a 'this page is best viewed with Browser X' label on
a Web page appears to be yearning for the bad old days, before the Web,
when you had very little chance of reading a document written on another
computer, another word processor, or another network. -- Tim Berners-Lee

[Evertjan.]

jman wrote on 27 jul 2008 in comp.lang.javascript:

<FORM ... onsubmit="if (fail) return false">

<form ... onsubmit="return !fail;">
--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)