make it random. Options

[OneOfTheseDayz]

Does anyone know how to make a javascript random??????

[*mipadi*]

Random in what way? JavaScript can generate a random number with the Math.random() function.

Note: The number returned is not mathematically random, of course, but it's good enough to fool a human.

[OneOfTheseDayz]

here Ill post the code...............

<!-- begin code provided by createblog.com --><br /><script><br /><!--<br />var mem=[];<br /><br />mem[mem.length]=["Anime feak","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=15"]<br />mem[mem.length]=["Lottery","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=18"]<br />mem[mem.length]=["Raze","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=26"]<br /><br /><br />var fdiv=document.getElementsByTagName("div")<br />for(a=0;a<fdiv.length;a++) {<br />FakeStaff='';<br />if(fdiv[a].className=="maintitle" && fdiv[a].innerHTML.match("Board Statistics")) {<br />var UsersOnline=fdiv[parseInt(a)+1]<br />for(c=0;c<mem.length;c++) {<br />UsersOnline.innerHTML+=', <a href="'+mem[c][1]+'">'+mem[c][0]+'</a>'<br />}}}<br />var ftd=document.getElementsByTagName("td")<br />for(a=0;a<ftd.length;a++) {<br />if(ftd[a].className=="pformstrip" && ftd[a].innerHTML.match("active in the past")) {<br />var td=ftd[parseInt(a)+2]<br />var beforeMemNum=td.innerHTML.split("guests, <B>")[0]+"guests, <b>"<br />var afterMemNum='</b> members,'+td.innerHTML.split("</B> members,")[1]<br />var MemNum=parseInt(td.innerHTML.split("guests, <B>")[1].split("</B> members,")[0])+parseInt(mem.length)<br />var nMemCount=beforeMemNum+MemNum+afterMemNum<br />td.innerHTML=nMemCount<br />}}<br />//--><br /></script><br /><!-- end code provided by createblog.com -->

[*mipadi*]

Well...I'm still not entirely sure what you're trying to make random, but I can make an attempt to parse the code. (JavaScript is not my area of expertise, but the syntax is familiar enough that I am fairly sure I know what's going on.)

CODE

var mem=[];

This is declaring an array called mem. The array is empty.

CODE

mem[mem.length]=["Anime feak","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=15"]
mem[mem.length]=["Lottery","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=18"]
mem[mem.length]=["Raze","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=26"]

This is setting the index of the length of mem to a value--another array, to be exact, making mem a two-dimensional array (as far as I can tell). It seems to be setting the same index to a value...hrm...

CODE

var fdiv=document.getElementsByTagName("div")

This gets an array of all the DIV's in a webpage and stores it in fdiv.

CODE

for(a=0;a<fdiv.length;a++)
{
   FakeStaff='';
   if(fdiv[a].className=="maintitle" && fdiv[a].innerHTML.match("Board Statistics"))
   {
       var UsersOnline=fdiv[parseInt(a)+1]
       for(c=0;c<mem.length;c++)
       {
           UsersOnline.innerHTML+=', <a href="'+mem[c][1]+'">'+mem[c][0]+'</a>'
       }
   }
}

This steps through every DIV element on the page. If the DIV is called "maintitle" and it is within an HTML element called "Board Statistics", then the number of users online is stored in the variable usersOnline. Then, the inner for loop steps through every entry in mem and adds on a link with a specified label (from the array mem.

CODE

var ftd=document.getElementsByTagName("td")

Gets an array of every TD element on a page and stores it in the variable ftd.

CODE

for(a=0;a<ftd.length;a++)
{
   if(ftd[a].className=="pformstrip" && ftd[a].innerHTML.match("active in the past"))
   {
       var td=ftd[parseInt(a)+2]
       var beforeMemNum=td.innerHTML.split("guests, <B>")[0]+"guests, <b>"
       var afterMemNum='</b> members,'+td.innerHTML.split("</B> members,")[1]
       var MemNum=parseInt(td.innerHTML.split("guests, <B>")[1].split("</B> members,")[0])+parseInt(mem.length)
       var nMemCount=beforeMemNum+MemNum+afterMemNum
       td.innerHTML=nMemCount
   }
}

This steps through every TD element on the page. If the TD is named "pformstrip" and is within an element specified by "active in the past", then some information is pulled out of ftd and stored in the variable td. The information is then parsed to get some sort of count.

Now, what precisely are you trying to randomize?

[OneOfTheseDayz]

ummm. Ok so I akm trying to randomize the different members....
here I am better at example the site here at the bottom it shows different members ( 3 of these being ones that are put in through this code). I am trying to make it randomize so somtimes when you click 2 members come one time and when you click later on it shopws a different two to 3 up for instance ( I am using A, B , C to represent members) A and B are on the first time you are on later when you go back on C and A are on. Later when you go back on A, B and C are on.......

[*mipadi*]

Okay. The first thing to do is populate the array, which is best done like this:

CODE

var mem=[];

mem[0]=["Anime feak","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=15"];
mem[1]=["Lottery","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=18"];
mem[2]=["Raze","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=26"];

This gives you a two-dimensional array with the values you desire.

Now, you want to generate two or three users to display. This is a bit tough. I'd first generate a random number of entries using Math.random():

CODE

var displayNumUsers = Math.floor(Math.random() * 3);
if (displayNumUsers < 2)
{
   count++;
}

That will give you a counter that will hold either the value 2 or 3.

Now, just loop through and display the users. First, create a variable to hold the number of users displayed, then a variable to hold the users that have been displayed.

CODE

var count = 0;
var users=[];
users[0] = -1;
users[1] = -1;
users[2] = -1;
while (count <= displayNumUsers)
{
   var user;
   var index;
   index = Math.floor(Math.random() * mem.length);
   while (index == users[0] || index == users[1] || index == users[2])
   {
       index = Math.floor(Math.random() * mem.length);
   }
   user = mem[index];
   //code for displaying user, using variable user
   count++;
   users[count - 1] = index;
}

Admittedly, this I hacked this code out pretty quick, so it's not optimized. I'm not an expert in JavaScript and I haven't tested this code, but I'm fairly confident it will work, or it can be fixed easily.

[OneOfTheseDayz]

ok I think you may have confused me a bit........

here is what I did.....

<!-- begin code provided by createblog.com --><br /><br /><script><br /><!--<br />var mem=[];<br /><br />mem[mem.length]=["Anime feak","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=15"]<br />mem[mem.length]=["Lottery","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=18"]<br />mem[mem.length]=["Raze","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=26"]<br /><br />var displayNumUsers = Math.floor(Math.random() * 3);<br />if (displayNumUsers < 2)<br />{<br />   count++;<br />}<br /><br /><br />var count = 0;<br />var users=[];<br />users[0] = -1;<br />users[1] = -1;<br />users[2] = -1;<br />while (2 <= displayNumUsers)<br />{<br />   var user;<br />   var index;<br />   index = Math.floor(Math.random() * mem.length);<br />   while (index == users[0] || index == users[1] || index == users[2])<br />   {<br />       index = Math.floor(Math.random() * mem.length);<br />   }<br />   user = mem[index];<br />   //code for displaying user, using variable user<br />   count++;<br />   users[count - 1] = index;<br />}<br /><br /><br /><br /><br />var fdiv=document.getElementsByTagName("div")<br />for(a=0;a<fdiv.length;a++) {<br />FakeStaff='';<br />if(fdiv[a].className=="maintitle" && fdiv[a].innerHTML.match("Board Statistics")) {<br />var UsersOnline=fdiv[parseInt(a)+1]<br />for(c=0;c<mem.length;c++) {<br />UsersOnline.innerHTML+=', <a href="'+mem[c][1]+'">'+mem[c][0]+'</a>'<br />}}}<br />var ftd=document.getElementsByTagName("td")<br />for(a=0;a<ftd.length;a++) {<br />if(ftd[a].className=="pformstrip" && ftd[a].innerHTML.match("active in the past")) {<br />var td=ftd[parseInt(a)+2]<br />var beforeMemNum=td.innerHTML.split("guests, <B>")[0]+"guests, <b>"<br />var afterMemNum='</b> members,'+td.innerHTML.split("</B> members,")[1]<br />var MemNum=parseInt(td.innerHTML.split("guests, <B>")[1].split("</B> members,")[0])+parseInt(mem.length)<br />var nMemCount=beforeMemNum+MemNum+afterMemNum<br />td.innerHTML=nMemCount<br />}}<br />//--><br /></script><br /><!-- end code provided by createblog.com -->

Maybe I skrewed up but when I put it up it stops responding............

[*mipadi*]

Try this:

CODE

var mem=[];

mem[0]=["Anime feak","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=15"]
mem[1]=["Lottery","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=18"]
mem[2]=["Raze","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=26"]

var displayNumUsers = Math.floor(Math.random() * 3);
if (displayNumUsers < 2)
{
  count++;
}


var count = 0;
var users=[];
users[0] = -1;
users[1] = -1;
users[2] = -1;
while (count <= displayNumUsers)
{
  var user;
  var index;
  index = Math.floor(Math.random() * mem.length);
  while (index == users[0] || index == users[1] || index == users[2])
  {
      index = Math.floor(Math.random() * mem.length);
  }
  user = mem[index];
 
   var fdiv=document.getElementsByTagName("div")
   for(a=0;a<fdiv.length;a++)
   {
       FakeStaff='';
       if(fdiv[a].className=="maintitle" && fdiv[a].innerHTML.match("Board Statistics"))
       {
           var UsersOnline=fdiv[parseInt(a)+1]
           for(c=0;c<mem.length;c++)
           {
               UsersOnline.innerHTML+=', <a href="'+user[1]+'">'+user[0]+'</a>'
           }
       }
   }
   var ftd=document.getElementsByTagName("td")
   for(a=0;a<ftd.length;a++)
   {
       if(ftd[a].className=="pformstrip" && ftd[a].innerHTML.match("active in the past"))
       {
           var td=ftd[parseInt(a)+2]
           var beforeMemNum=td.innerHTML.split("guests, <B>")[0]+"guests, <b>"
           var afterMemNum='</b> members,'+td.innerHTML.split("</B> members,")[1]
           var MemNum=parseInt(td.innerHTML.split("guests, <B>")[1].split("</B> members,")[0])+parseInt(mem.length)
           var nMemCount=beforeMemNum+MemNum+afterMemNum
           td.innerHTML=nMemCount
       }
   }
 
  count++;
  users[count - 1] = index;
}

[OneOfTheseDayz]

<!-- begin code provided by createblog.com --><br /><script><br />var mem=[];<br /><br />mem[0]=["Anime feak","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=15"]<br />mem[1]=["Lottery","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=18"]<br />mem[2]=["Raze","http://s15.invisionfree.com/Animeupgrade/index.php?showuser=26"]<br /><br />var displayNumUsers = Math.floor(Math.random() * 3);<br />if (displayNumUsers < 2)<br />{<br />  count++;<br />}<br /><br /><br />var count = 0;<br />var users=[];<br />users[0] = -1;<br />users[1] = -1;<br />users[2] = -1;<br />while (count <= displayNumUsers)<br />{<br />  var user;<br />  var index;<br />  index = Math.floor(Math.random() * mem.length);<br />  while (index == users[0] || index == users[1] || index == users[2])<br />  {<br />      index = Math.floor(Math.random() * mem.length);<br />  }<br />  user = mem[index];<br /> <br />   var fdiv=document.getElementsByTagName("div")<br />   for(a=0;a<fdiv.length;a++)<br />   {<br />       FakeStaff='';<br />       if(fdiv[a].className=="maintitle" && fdiv[a].innerHTML.match("Board Statistics"))<br />       {<br />           var UsersOnline=fdiv[parseInt(a)+1]<br />           for(c=0;c<mem.length;c++)<br />           {<br />               UsersOnline.innerHTML+=', <a href="'+user[1]+'">'+user[0]+'</a>'<br />           }<br />       }<br />   }<br />   var ftd=document.getElementsByTagName("td")<br />   for(a=0;a<ftd.length;a++)<br />   {<br />       if(ftd[a].className=="pformstrip" && ftd[a].innerHTML.match("active in the past"))<br />       {<br />           var td=ftd[parseInt(a)+2]<br />           var beforeMemNum=td.innerHTML.split("guests, <B>")[0]+"guests, <b>"<br />           var afterMemNum='</b> members,'+td.innerHTML.split("</B> members,")[1]<br />           var MemNum=parseInt(td.innerHTML.split("guests, <B>")[1].split("</B> members,")[0])+parseInt(mem.length)<br />           var nMemCount=beforeMemNum+MemNum+afterMemNum<br />           td.innerHTML=nMemCount<br />       }<br />   }<br /> <br />  count++;<br />  users[count - 1] = index;<br />}<br /><br />var fdiv=document.getElementsByTagName("div")<br />for(a=0;a<fdiv.length;a++) {<br />FakeStaff='';<br />if(fdiv[a].className=="maintitle" && fdiv[a].innerHTML.match("Board Statistics")) {<br />var UsersOnline=fdiv[parseInt(a)+1]<br />for(c=0;c<mem.length;c++) {<br />UsersOnline.innerHTML+=', <a href="'+mem[c][1]+'">'+mem[c][0]+'</a>'<br />}}}<br />var ftd=document.getElementsByTagName("td")<br />for(a=0;a<ftd.length;a++) {<br />if(ftd[a].className=="pformstrip" && ftd[a].innerHTML.match("active in the past")) {<br />var td=ftd[parseInt(a)+2]<br />var beforeMemNum=td.innerHTML.split("guests, <B>")[0]+"guests, <b>"<br />var afterMemNum='</b> members,'+td.innerHTML.split("</B> members,")[1]<br />var MemNum=parseInt(td.innerHTML.split("guests, <B>")[1].split("</B> members,")[0])+parseInt(mem.length)<br />var nMemCount=beforeMemNum+MemNum+afterMemNum<br />td.innerHTML=nMemCount<br />}}<br />//--><br /></script><br /><br /><!-- end code provided by createblog.com -->

Ok thanks I think the problem is that there are too many names because now when I go to my site all three of the names appear at the same time but they are random.. ( visit my site to see what I mean).......Thanks

[*mipadi*]

I think it has something to do with the way the names are displayed. You might have to tweak that code; I didn't examine the structure of your board and just used what you had before, which may be wrong.

[OneOfTheseDayz]

OK you have me confused. By tweaking do you mean editing numbers, and by structure you mean what???

[*mipadi*]

Well, the script does something dealing with the TD and DIV elements of the board, which I didn't examine very closely. The script may not be functioning properly because of the way certain elements are added and/or modified.

[OneOfTheseDayz]

ok then so how would I find out if it is right or not?

[*mipadi*]

Output the values of the variables, run a few tests, find out exactly what the various loops and stuff are doing…

[OneOfTheseDayz]

Ok I think I hae been through every number combination know to man......... but I have been thinking that maybe a display 1 code would work????