Post data to server from javascript on client side

[milkyway]

Hello everyone,

I have a few values and variables that I want to post to a server
(without using a SUBMIT button). Is there a way to post data from
within javascript - do sockets or connections have to be open for this
to work?

Any help, hints or advice is appreciated :-)

Kindest Regards.

[Erwin Moller]

Re: Post data to server from javascript on client side

milkyway wrote:
[color=blue]
> Hello everyone,
>
> I have a few values and variables that I want to post to a server
> (without using a SUBMIT button). Is there a way to post data from
> within javascript - do sockets or connections have to be open for this
> to work?
>
> Any help, hints or advice is appreciated :-)
>
> Kindest Regards.[/color]

Hi,

Yes, just call the submit() method of a form, like this:

<form action="secretp osting.php" name="aForm">
<input type="hidden" name="var1" value="hai">
</form>

<script type="text/javascript">
document.forms["aForm"].submit();
</script>

do sockets or connections have to be open for this to work?

Don't worry about sockets, this is all just plain http/javascript.
But a TCPIP connection that is working comes in very handy when posting
forms. :P


Regards,
Erwin Moller

[milkyway]

Re: Post data to server from javascript on client side

Hello again everyone :-)

Adding more clarification below ...

Erwin Moller wrote:[color=blue]
> milkyway wrote:
>
> Hi,
>
> Yes, just call the submit() method of a form, like this:
>
> <form action="secretp osting.php" name="aForm">[/color]
[color=blue]
> <input type="hidden" name="var1" value="hai">[/color]
^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^

the thing is that I do not have an <input ....> defined for every value
I wish to send to the server. I remember (in the old days), the string
sent to the server would sook something like:

http://groupsbeta.google.com/group/comp.infosystems.www.authoring.html/post?inreplyto=c2f6741081323de7&reply_to=group

See how the '&'is used to separate the <value name / value>
combinations? Something like:

http://clothes.com/run_this?socks=blue&shirts=10& ...

How would one generate the string to send to the server? Is there a
better way to get data to the server?
I am open for any suggestions.

Kindest Regards.

[milkyway]

Re: Post data to server from javascript on client side

Hello all again,

I found some code that kind of looks similar to what I am trying to
achieve - except here, there is the allowing of the posting of *one*
variable. Is there a way to post many variables (
the idea is that the post will go to server side processing and send
back an HTML page).

Regards,
Milkyway

<FORM ACTION="URLHere " ID="frmone" NAME="frmUser" METHOD="POST" >
....form stuff here
</form>

<SCRIPT LANGUAGE="JAVAS CRIPT">
<!--

var frmUser = document.getEle mentById("frmon e")
frmUser.submit( frmUser);

-->
</script>

or you could try:

<SCRIPT LANGUAGE="JAVAS CRIPT">
<!--

var frmUser = document.frmUse r
frmUser.submit( frmUser);

-->
</script>

[Grant Wagner]

Re: Post data to server from javascript on client side

"milkyway" <d0mufasa@hotma il.com> wrote in message
news:1106079749 .345938.211800@ c13g2000cwb.goo glegroups.com.. .[color=blue]
> Hello again everyone :-)
>
> Adding more clarification below ...
>
> Erwin Moller wrote:[color=green]
>> milkyway wrote:
>>
>> Hi,
>>
>> Yes, just call the submit() method of a form, like this:
>>
>> <form action="secretp osting.php" name="aForm">[/color]
>[color=green]
>> <input type="hidden" name="var1" value="hai">[/color]
> ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^
>
> the thing is that I do not have an <input ....> defined for every
> value
> I wish to send to the server. I remember (in the old days), the string
> sent to the server would sook something like:[/color]

So create an <input> for every value you want to send to the server.
[color=blue]
> http://groupsbeta.google.com/group/c...reply_to=group
>
> See how the '&'is used to separate the <value name / value>
> combinations? Something like:[/color]

You'll get the exact same thing from:

<form method="GET" action="your_fo rm_handler.jsp" >
<!-- note method="GET" -->
<input type="hidden" name="a" value="b">
<input type="hidden" name="c" value="d">
<input type="hidden" name="e" value="f">
[color=blue]
> http://clothes.com/run_this?socks=blue&shirts=10& ...
>
> How would one generate the string to send to the server? Is there a
> better way to get data to the server?
> I am open for any suggestions.[/color]

Please explain what you are trying to do. If you have a link that
displays a specific product for example, you do something like this _on_
_the_ _server_:

// read the database for product ids and names
// pretend the data returned is in -dataset-
for (var i = 0; i < dataset.rows_re turned; ++i) {
print_to_client (
"<a href=\"/products/look_at_product .jsp?" +
"product_id =" +
dataset.getRow( i).getColumn("p roduct_id") +
"\">" +
dataset.getRow( i).getColumn("p roduct_name") +
"</a>"
);
}

Then /products/look_at_product .jsp would do something like:

var product_id = Request.value(" product_id");
// run the following SQL safely:
// "select * from products
// where product_id=" + product_id
// (Note: never never never just stick
// untrusted data like -product_id-
// obtained from the client and simply
// use it to build SQL)

// now display the stuff retrieved from
// the database query, or display an
// error if the product couldn't be
// found or whatever

So like I said, please explain what you are attempting to do. I think
you don't need JavaScript at all (but without more details I can't tell
for sure). If you are trying to display information about data you have
on the server, write the links as shown, from the server.

--
Grant Wagner <gwagner@agrico reunited.com>
comp.lang.javas cript FAQ - http://jibbering.com/faq