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how do i fill random number?

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Join Date: Nov 2007

Posts: 227

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k2k

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how do i fill random number?

Jun 19th, 2009

say i have:
document.writeln("0")
document.writeln("1")
document.writeln("2")
document.writeln("3")
document.writeln("4")

how i do generate them in different order each time but all of them must display? ... please help

ex: .... 1
........ 3
...........0
...........4
........... 2

then another output would be:
........3
.........2
.........4.
.........1
............0 ... all random but must be all five line displaying..

thanks if anyone can help this out real quick

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Join Date: Apr 2007

Posts: 437

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Fungus1487 Fungus1487 is offline

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Posting Pro in Training

Re: how do i fill random number?

Jun 19th, 2009

You will need to randomly generate numbers and check that they have not already been displayed. The below does this by continuosly looping until it has found the total range of values. Each loop generates a new number then checks if it exists in the array. If not the new value is appended and output to the screen.

 Help with Code Tags 
 javascript Syntax (Toggle Plain Text) 
 
var arrayContains = function(array, value) {
    for(var i in array) {
        if(array[i] == value) { return true; }
    }
    return false;
};
 
var found = [];
var range = 4; // 0 - 4
while(found.length < range) {
    var num = Math.floor(Math.random() * (range + 1));
    // If it is new then add it and print it
    if(!arrayContains(found, num)) {
        found[found.length] = num;
        document.writeln(num);
    }
}
var arrayContains = function(array, value) {
    for(var i in array) {
        if(array[i] == value) { return true; }
    }
    return false;
};

var found = [];
var range = 4; // 0 - 4
while(found.length < range) {
    var num = Math.floor(Math.random() * (range + 1));
    // If it is new then add it and print it
    if(!arrayContains(found, num)) {
        found[found.length] = num;
        document.writeln(num);
    }
}

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Join Date: Aug 2008

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essential

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Re: how do i fill random number?

Jun 19th, 2009

You could also try this simple variation of using arrays instead of integer values.

All codes is as follows:

 Help with Code Tags 
 JavaScript / DHTML / AJAX Syntax (Toggle Plain Text) 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html id="html40L" lang="en">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Style-Type" content="text/css">
<meta http-equiv="Content-Script-Type" content="text/javascript">
<meta http-equiv="Window-target" content="_top">
<title>Free Live Help!</title>
<style type="text/css">
<!--
 
-->
</style>
<script type="text/javascript">
<!--
 
var randomNumbers = function( countUpTo ) {
var sCount = 1;
var count = [ ];
   while( countUpTo >= sCount ) {
   count.push( countUpTo-- );
   count.sort( function() { return .5- Math.random(); } ); 
   }  for ( var x = 0; x < count.length; x++ ) {
   document.writeln( String( count[ x ] ).fontcolor("green") + "<br>" );
   }
}
 
// -->
</script>
</head>
<body>
<div id="output">
<script type="text/javascript">
<!--
randomNumbers( 10 );
// -->
</script>
</div>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html id="html40L" lang="en">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Style-Type" content="text/css">
<meta http-equiv="Content-Script-Type" content="text/javascript">
<meta http-equiv="Window-target" content="_top">
<title>Free Live Help!</title>
<style type="text/css">
<!--

-->
</style>
<script type="text/javascript">
<!--

var randomNumbers = function( countUpTo ) {
var sCount = 1;
var count = [ ];
   while( countUpTo >= sCount ) {
   count.push( countUpTo-- );
   count.sort( function() { return .5- Math.random(); } ); 
   }  for ( var x = 0; x < count.length; x++ ) {
   document.writeln( String( count[ x ] ).fontcolor("green") + "<br>" );
   }
}

// -->
</script>
</head>
<body>
<div id="output">
<script type="text/javascript">
<!--
randomNumbers( 10 );
// -->
</script>
</div>
</body>
</html>