best way of checking if existant

[scroots]

if i generate a random number how can i make it into a list with the other generated numbers and check to see if it alread exists and if it does perform a function?
afterward i would like to write the random numbers to a textbox

thanks in advance
scroots

[Danne]

Something like this?




<script language="JavaScript">

function searchList(list,nr)
{
var i;
for(i=0;i<list.length;i++)
if(list[i]==nr)
return i;
return -1;
}

function addRandom()
{
var nr=Math.round(Math.random()*100);
if(searchList(randomList,nr)==-1)
randomList[randomList.length]=nr;
}

function showList(txt,list)
{
txt.value=list.join("\n");
}

var randomList=new Array();

</script>
<input type="button" value="Add number" onClick="addRandom();showList(textbox,randomList);">
<textarea id="textbox" rows="10" cols="10"></textarea>


It only adds the number if it doesn't previously exist in the array.

[scroots]

thank you so much for that

scroots