passing values through pages

shifter · 05-23-2010, 09:04 AM

I have the following snippet HTML code:

Quote:

and the following javascript code:

Quote:

function del() {

if (document.getElementById) {
var hiddens = document.getElementById("wue").value;
var args = hiddens.split(" ");

var tabella = document.getElementById("profile");
tabella.deleteRow(1);
x = tabella.insertRow(1);
x.innerHTML = "<td colspan='3'> \
<form action='/cgi-bin/save.cgi' method='POST'> \
<input type='text' name='name' size='30' /> \
<input type='hidden' name='params' value='args[0] args[1]" /> \
<input type='submit' value='Save' /> \
</form> \
</td>";

}

}

The code almost works... The problem is that args[0] and args[1] are parameters JavaScript and I pass javascript code to Perl/CGI code. My program don't interpolate javascript variables.

save.cgi begin with:

Quote:

my $cgi = CGI->new();
print $cgi->header('text/html');

my @params = split(' ',$cgi->param('params'));

How can pass values in args[0] and args[1] to Perl/CGI script?

Thank you in advance to answers,
savio

Robhogg · 05-23-2010, 10:25 AM

The problem here is that, unlike Perl and PHP, JavaScript does not use a special character to indicate a variable name, meaning that you can't just thrown one into the middle of a string and expect it to be substituted.

In the following line, JavaScript sees the variable names as just normal text:

Quote:

Originally Posted by shifter

Code:

<input type='hidden' name='params' value='args[0] args[1]" />

Instead, you have to concatenate the variables onto (or into) the string:

Code:

<input type='hidden' name='params' value='" + args[0] + " " + args[1] + "' />\

shifter · 05-23-2010, 02:13 PM

Ok, thank you, it works!