Hi Everyone,
I've been reading and searching the web for days trying to figure out how exactly you can access and read a Perl array or hash from within JavaScript. I've been reading that JSON is the way to go, but non explain exactly how. If you can help me out, I would really appreciate it.
Here's the scenario I have...
I have a perl file called index.pl and in this file I have the below code. I know that arrays are converted to strings including the array's subscript. The subscripts that I want to use are integers. For example, arr[0]. But, how can I use JSON (if it's the right choice) to access my perl array so I can loop through it and generate my HTML? -
my @arr = ();
-
push @arr, "arrValue1";
-
push @arr, "arrValue2";
-
-
# Start HTML Generation
-
print "HTTP/1.0 200 OK\n";
-
print "Content-Type: text/html\n\n\n";
-
-
<html>
-
<head></head>
-
<body>
-
<script type="text/javascript" language="JavaScript">
-
for (var i = 0; i < 2; i++) {
-
document.write("$arr[i]"); //converted to a string constant
-
// how can I access my perl @arr variable?
-
}
-
</script>
-
</body>
-
</html>
-
I have also tried converting my array in perl to an object using the {} curley braces and the following: -
my $js = JSON::objToJson({@arr});
-
print $js
but how in javascript? I really appreciate any help. This is for a webserver I am working to build in my company.
Thanks,
Bobby
1  3621 
Ok, so after some more research, I think I figured out the JSON part. Hope this helps someone out there and this may not be the right or best way of doing it so please let me know if you have a better way.
So, as I push data into my array, I can take this object and pass it to JSON using the objToJSON function like so: -
my @arr = ();
-
for (my $i=0; $i<2; $i++) {
-
push @arr, $i; # just so we can have integer indices (horrible)
-
push @arr, "value$i";
-
}
-
-
my $js = objToJson({@arr});
Now, in my javascript, I can do the following:
BUT, there's a small problem. The arr's indices are of string kind where the 0th index is "value1" and the value associated to "value1" would be "value2"
In order for me to traverse through this, I MUST know the hash values, i.e.: - document.write(arr[0]) // will print "value1"
Does anyone know how I can use integer indices here so all I have to do in my javascript would be arr[0] without having to push the indices into the array? I would like for it to be an array for now and not a hash.
Thanks so much.
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