String into html with Javascript

[fex]

Hi,

I wrote a Javascript to see who's logged in on my website. In the script I simply create a string of the names of the people who are online.

I was wondering how I could get that string into <p></p> tags on my webpage.

I'm not sure about the return statement to retreive the string, maybe I need to use print or echo in php (with the js inside the echo).. That's why I'm asking here :)
<script type="text/javascript">
function onlineMembers(){

var usersOnline = new Array(7);
var users = new Array(7);
online = "";

usersOnline[0] = "laurens";
usersOnline[1] = "maarten";
usersOnline[2] = "jana";
usersOnline[3] = "leen";
usersOnline[4] = "pipi";
usersOnline[5] = "salm";
usersOnline[6] = "gerry";

users [0] = "Laurens";
users [1] = "Maarten";
users [2] = "Jana";
users [3] = "Leen";
users [4] = "Pipi";
users [5] = "Salm";
users [6] = "Gerry";

if(document.cookie.length > 0){ // if there are any cookies
for(i=0; i<7; i++){
search = usersOnline[i] + "=";
offset = document.cookie.indexOf(search);
if(offset != -1){ // if cookie exists
online = online + "» " + users[i] + "\n\n"; // Second array for capitals
}
}
}
else{
online = "Geen leden online"; // When no members online
}
return online;
}
</script>

[crath]

assign a ID to the P tag, so you can call and fill it using document.getElementById("idname").innerHTML = "put the new content of the p here";

[fex]

Thx for your fast response, was on vacation tho, so wasn't able to answer :)

I've assigned an ID to the p tag which works. But is the coding with the cookies alright ? Cause I'm not getting what I should,,

if(document.cookie.length > 0){ // if there are any cookies
for(i=0; i<7; i++){
search = users[i] + "=";
offset = document.cookie.indexOf(search);
if(offset != -1){ // if cookie exists
online += "» " + users[i] + "\n\n";
}
}
}
else{
online = "Geen leden online"; // When no members online
}
//return online;
online += "bla";
document.getElementById('members_online').innerHTML = online;

The only thing I'm seeing on my webpage (logged in or not) is "bla"..

[=Messa=]

I tested your code and it works OK.

Can you post the cookie(s) string you're testing this with?

Keep in mind, that the indexOf() method you're using is case sensitive.

[fex]

Mmmh, your right, the code does work. You put me to thinking, thankfully I noticed I set my cookies as this:

setcookie("loginname", $loginname, time()+3600);

So I needed to see if it's the value of the cookie (if it exists) that matches one of the people in my users array.
I had to modify the code a bit, the result:

<script type="text/javascript">
var users = new Array(7);
var member = "";
var online = "";

users[0] = "laurens";
users[1] = "maarten";
users[2] = "jana";
users[3] = "leen";
users[4] = "pipi";
users[5] = "salm";
users[6] = "gerry";

if (document.cookie.length>0){
c_name = 'loginname';
c_start = document.cookie.indexOf(c_name + "=");
if (c_start!=-1){
c_start=c_start + c_name.length+1;
c_end=document.cookie.indexOf(";",c_start);
if (c_end==-1){
c_end=document.cookie.length;
}
member = unescape(document.cookie.substring(c_start,c_end));
}
for(i=0; i<7; i++){
if(member == users[i]){
online += "» " + users[i] + "<br/>";
}
}
}

document.getElementById('members_online').innerHTML = online;
</script>

I guess this should work since a cookie is stored on your computer and you can only have one cookie named 'loginname' at the same time.. If not, please correct me ;)

EDIT: It cannot work, I need to 'write all online members down' on one page and include that one in my webpage.
I would do it like this:

$fp = fopen("data.php", "a");
fputs($fp, "<p>$online_members</p>");
fclose($fp);

but my cookies expire after an hour,,

[jing3142]

could be a problem in your setcookie() function or in your time() function. Need to see the code for these.

This site gives some cookie functions that work for me.

http [colon] //www [dot] quirksmode [dot] org/js/cookies [dot] html

as a newbie cannot give a live link yet

[fex]

I'm trying it with fopen, meaning I'll need php,,

http://forums.digitalpoint.com/showthread.php?p=8675656#post8675656