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Hi, all!
I have a problem, how can I check a form data before sending it to
server. I have the example below, but first data is sent to server, but
after JavaScript checks the data

I need that JavaSctipt check data and after send it to the server, how
can do that?

Example:
....
<script language="javascript">
function check()
{
if(document.forms[0].name1.value == "")
{
alert("enter name");
return false;
}
else return true;
}
</script>
....
<form action="someapp.php" onSubmit="return check()">
<input type="text" name="name1">
<input type="submit">
</form>
....

Thanks in advance!

"Dknight" <> wrote in message
news: ups.com...
> Hi, all!
> I have a problem, how can I check a form data before sending it to
> server. I have the example below, but first data is sent to server, but
> after JavaScript checks the data
>
> I need that JavaSctipt check data and after send it to the server, how
> can do that?

[snip]

What makes you think that the data is sent to the server first?

"onSubmit()" is invoked when you hit the "submit" button;
only if "check()" returns "true" is "action=" performed.

Your code could be simplified somewhat:

<script type="text/javascript">
function check(form) {
if (form.name1.value == "") {
alert("enter name");
return false;
}
return true;
}
</script>
....
<form action="someapp.php" onSubmit="return check(this)">
<input type="text" name="name1">
<input type="submit">
</form>
....

McKirahan wrote:
> "Dknight" <> wrote in message
> news: ups.com...
>
>>Hi, all!
>>I have a problem, how can I check a form data before sending it to
>>server. I have the example below, but first data is sent to server, but
>>after JavaScript checks the data
>>
>>I need that JavaSctipt check data and after send it to the server, how
>>can do that?
>
>
> [snip]
>
> What makes you think that the data is sent to the server first?
>
> "onSubmit()" is invoked when you hit the "submit" button;
> only if "check()" returns "true" is "action=" performed.
>
> Your code could be simplified somewhat:
>
> <script type="text/javascript">
> function check(form) {
> if (form.name1.value == "") {

Or:

if ( !form.name1.value ) {


> alert("enter name");
> return false;
> }
> return true;

There is no need to return true, just don't return false.

[...]


--
Rob