# Adding 3 Different Random Numbers For Blackjack / 21?

Oct 19, 2009

I would like to create a Blackjack style game for one of my high school programming classes. I can generate 3 different random numbers and use these random numbers to display an image with that number on it.

How do I add the 3 separately generated numbers together to show the total??

Here is my code so far. Specifically I would like to add the myNumber1(), myNumber2() and myNumber3() results together.

<html>
<title>Play 21</title>
<script language="javascript">
function myNumber1(){

[Code]....

## Sum Of 10 Random Numbers?

Oct 12, 2010

I'm using a forLoop to generate 10 random numbers, how would I go about added them all together? code...

## Generating A Random Between 2 Numbers?

May 11, 2010

I'll get to the point, I'm a noob I'm using greasemonkey for a certain website. Basically, I'm using gm to refresh the page after a certain time, I was however wondering, If I can set it to a random number between 2 specific times?

The code I'm using atm is setTimeout(function() { document.location.reload(); } , 10000); I know I have to use math.random, well, I think I do. But I'm not sure how to do it between 2 certain times? So to summarise, I'm trying to refresh a page at any given random time between say 5-10 minutes.

## Unique Random Numbers

Jul 22, 2002

<script language="JavaScript">
// Unique Random Numbers Picker
// By Premshree Pillai

var numArr = new Array("0","1","2","3","4","5","6","7","8","9"); // Add elements here
var pickArr = new Array(); // The array that will be formed
var count=0;
var doFlag=false;
var iterations=0;

function pickNums(nums)
{
iterations+=1;
var currNum = Math.round((numArr.length-1)*Math.random());
if(count!=0)
{
for(var i=0; i<pickArr.length; i++)
{
if(numArr[currNum]==pickArr[i])
{
doFlag=true;
break;
}
}
}
if(!doFlag)
{
pickArr[count]=numArr[currNum];
document.write('<b>' + numArr[currNum] + '</b> <font color="#808080">|</font> ');
count+=1;
}
if(iterations<(numArr.length*3)) // Compare for max iterations you want
{
if((count<nums))
{
pickNums(nums);
}
}
else
{
}
}

pickNums(5); // Call the function, the argument is the number of elements you want to pick.
// Here we pick 5 unique random numbers.

## Unique Random Numbers II

Aug 22, 2002

This script is a slightly modified version of "Unique Random Numbers". In this script it becomes easier to implement more than one instances of "Picking Unique Random Numbers".

This JavaScript picks up a number of unique random elements from an array.

For example; if you have an array myArray consisting of 10 elements and want to pick 5 unique random elements. Suppose initially myArray is picked randomly, then myArray should not be picked again.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<title>Unique Random Numbers II</title>
<script language="JavaScript">
// Unique Random Numbers II
// -Picks a number of unique random numbers from an array
// By Premshree Pillai
// http://www.qiksearch.com, http://javascript.qik.cjb.net

function pickNums(nums, numArr, pickArr, count, doFlag, iterations)
{
iterations+=1;
var currNum = Math.round((numArr.length-1)*Math.random());
if(count!=0)
{
for(var i=0; i<pickArr.length; i++)
{
if(numArr[currNum]==pickArr[i])
{
doFlag=true;
break;
}
}
}
if(!doFlag)
{
pickArr[count]=numArr[currNum];
document.write('<b>' + numArr[currNum] + '</b> <font color="#808080">|</font> ');
/* Modify above line for a different format output */
count+=1;
}
if(iterations<(numArr.length*3)) // Compare for max iterations you want
{
if((count<nums))
{
pickNums(nums, numArr, pickArr, count, doFlag, iterations);
}
}
else
{
}
}
</script>
<body bgcolor="#FFFFFF">

<!--BEGIN BODY SECTION CODE-->
<script language="JavaScript">
var numArr1 = new Array("0","1","2","3","4","5","6","7","8","9"); // Add elements here
var pickArr1 = new Array(); // The array that will be formed
var count1=0;
var doFlag1=false;
var iterations1=0;

pickNums(5, numArr1, pickArr1, count1, doFlag1, iterations1); // Call the function, the argument is the number of elements you want to pick.
// Here we pick 5 unique random numbers
</script>
<!--END BODY SECTION CODE-->

</body>
</html>

## Getting Three Unique Random Numbers?

Apr 13, 2009

My Name is Tom I am from the UK and I am (for my own entertainment and learning) creating a dvd indexing web application to sort and catagorize my dad's dvd collection. On the homepage for this website I have dynamically (using JS) appended 3 image elements which contain the images of dvd box art at "x by 225" pixel dimensions i.e. when I resize the dvd box art they all have to be 225 pixels in height and constrain to the necessary width in contrast to the height. Now that the images are working, I now want them to be randomized so 3 unique box art images are displayed everytime the page is refreshed. So far my script is:

Code:

// Image Rotation Javascript
function imageRotation()
{

[Code].....

Problem with this is that sometimes I get results from the random number generation that are non-unique i.e. sometimes random_number1, random_number2 and random_number3 yield: 3,3 and 11 etc. I need to make it so that you never get such clashes or it will show 2 or more identical images on the homepage. How can I change the random number generators to achieve this?

how to plug the imgObj into the image elements as to use the preloaded images instead (at the moment their just hard coded.)

## Clone Element - After Row 10 Random Numbers

Nov 30, 2011

I have a form wich has a add/remove row button, this so the visitor can select multiple sets of data. All is fine and is being submitted via PHP.

Only problem is from number 10 and up, i am getting strange random numbers in the new rows that are added in their name. Like 1111 (instead of 11), 122222 (instead of 12). And because of this, every row from 10 and up won't be send through php, giving this random effect.

The full form can be viewed: [url]

The code i use for my Clone Element is:

## Generate Random Numbers Without Repeating [js]?

May 14, 2011

I got this code and it generates random numbers but with repeating code...

## Multiple Array And Random Numbers ?

Nov 10, 2010

I have a quick question with multiple array and random numbers. If i generate my random numbers in one array, how would i take a selection of those numbers and put them in another array?

Ex: array 1: 25, 34, 38, 40, 22, 49

Want to move numbers between 30 and 50 to another array.

array 2: 34, 38, 40, 49

Is it as simple as for loops and if statements setting the conditions? do i use a sorting method? (selection? bubble?)

## Dynamically Re-generate Random Numbers In A Table?

Nov 19, 2009

I have a table with a couple random numbers, and i want to click a button that will dynamically regenerate the numbers each time the button is clicked without re-generating the entire table., im using DOM and innerhtml for these random numbers. heres the javascript and html code. so far, it just generates the random numbers when the page loads.[code]...

## Using For Loop To Give An Array 10 Random Numbers?

Feb 18, 2009

I am working on a problem that wants me to use a for loop to give an array a random number for each of it's elements (total of 10) and then using a second loop to add them up and display the result.

<script type="text/javascript">
var sum;
var i=0;

[code]....

## Creating Cookie To Store Random Numbers?

Apr 5, 2006

How do I create a cookie for storing a random number in it.

## How To Dynamically Re-generate Random Numbers In A Table

Nov 19, 2009

I have a table with a couple random numbers, and i want to click a button that will dynamically regenerate the numbers each time the button is clicked without re-generating the entire table., im using DOM and innerhtml for these random numbers. heres the javascript and html code. so far, it just generates the random numbers when the page loads.code...

## Creating A Code To Search A Series Of Random Numbers

Oct 28, 2011

I am trying to create a javascript code in which I prompt the user for a number (an integer from 0 to 100) to search for, then search a function with the number they entered and then display whether the number was found, and if found, a location where it can be found within the list.

<html>
<body>

[Code]....

## Math Function - Task To Generate Two Random Numbers

Jun 21, 2011

I've got my code, and the task is to generate two random numbers, the user then inputs an answer for them added together, then the program checks the answer and displays either "correct" or "wrong". Here's some of my code:

Code:
<HTML>
<TITLE>Assessment Task 3 : Rohan Gardiner</TITLE>
<SCRIPT LANGUAGE ="JavaScript">
function maths(){
var response;
response = "correct";
} else {
response = "wrong";
} document.questions.result.value = response ;
} function randoms() {
rndNum = Math.random();
Num = rndNum*20;
Num1=rndNum*10
document.write(Math.round(Num)+"+"+ Math.round(Num1));
document.write(Math.round(Num) + Math.round(Num1)); }
<h1 align="center">Rohan Gardiner Assessment Task 3</h1>
<FORM NAME = "questions">
<SCRIPT Language=JavaScript> randoms(); </script>
=
<INPUT TYPE = "textbox" NAME = "answer" > <BR>
<INPUT NAME = "dobutton" TYPE = "button" Value = "check" onClick= "maths()">
<INPUT TYPE = "textbox" NAME = "result" >
</BODY></HTML>

## Generate Random Numbers 0-8 To Use To Access Array Indices

May 5, 2009

I'm trying to generate random numbers 0-8 to use to access array indices.[code]Every once in a while, I'm getting a -1 in my console log. I read on a site that this line:[code]will generate a number between 0 and 10 (so 1-9).How is -1 being generated?

Feb 7, 2010

I'm trying to do a homework problem that involves using cookies to add numbers.

Here is what I've done so far:

The code is simply supposed to prompt the user asking how many numbers he/she would like to add. Then it is supposed to have additional prompts asking for each individual number. As the numbers are being inputted, it is supposed to keep a running sum via cookies and then output the total at the end.

The problem that I'm having is that I don't think the cookies are even being created which is weird because the createCookie(), printCookie(), and overWriteCookie() methods are copied directly from the textbook.

## Instead Of Adding My Numbers Together Its Putting Them Next To Each Other?

Jul 12, 2011

Does anyone know what i'm doing wrong here. Instead of adding my numbers together its putting them next to each other?

This is the javascript...

Code:

This is the form...

Code:

## Adding Numbers In A Form?

Dec 2, 2011

I have an HTML form, that's part of a child window,and has two random numbers in it. How can i have it so when user inputs the sum in an empty box in the form, and clicks 'submit' the result is displayed in the main window? Also, it needs to check if answer is correct or wrong and show that in the main window at the same time.

## Adding Numbers That Have Been Entered In A Form

Aug 25, 2011

I have the following code that I wrote myself (except for the function isNumberKey). However, I don't know how to actually add the numbers together. My plan is to store the value entered in the forms as a variable, then manipulate the variables to get my final number. The final number would be stored in variable named Total and would be displayed after Total: at the bottom of my page.

<HTML>

## Adding Numbers In Real Time?

Dec 16, 2005

I'm wondering how I can add numbers in real time using javascript.

example,

say I enter a number in a text field,

<input type="text" name="qty" value="2">
<input type="text" name="cost" value="5">

how would I then be able to get the total in another test field, like:

<input type="text" name="total" value="10">

## Validation For Html Form Adding 2 Numbers?

May 26, 2009

I am trying to create an html form for adding 2 numbers and also trying to validate using java script. what I want is instead of getting an alert msg as a result

I want the result to be displayed in the sum:text box --- not as an alert I want to validate the input fields ,if null -- throw an alert msg

<!DOCTYPE html PUBLIC "-W3CDTD HTML 4.01 TransitionalEN" "http:www.w3.org/TR/html4/loose.dtd">
<html>

[Code].....

Jul 16, 2011

On my website, I have random logos appear on the home page as products that I recommend. I would like to make these logos into links to the website they are from, so that when one clicks on the picture, it directs you to the site, but I can't quite get it to work, and I know very little about Javascript (as you may know from my previous question about Javascript).

Here's my current JS code:

<!--
// Set up the image files to be used.
var theImages = new Array() // do not change this
// To add more image files, continue with the

[Code].....

## Editing Code By Adding Random Selection?

Nov 4, 2008

I am trying to figure out how to make an online quiz via Javascript, based on just a couple questions (4 to be exact) from a question-bank, and I want only 2 of the questions out of the 4 to appear when the quiz is taken (randomly of course).I found a great template online for what I want my quiz to look like, however, it does NOT have the random add-on functionality I would like.I am not looking for the 'answer' or for someone else to do the workHere is the quiz template I found:

<?xml version = "1.0" encoding = "utf-8"?>
<!DOCTYPE html PUBLIC "-W3CDTD XHTML 1.0 StrictEN"
"http:www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

[code]....

## Adding Random Number To HTML Form?

May 29, 2009

I have a pretty basic HTML form, it doesn't go to a database or anything, it just gets emailed directly to the owner of the website with their customer query.However, the owner has now asked that each query be assigned a random reference number of no more than 16 digits which must also be visible to the customer.I presume this will be relatively easy but I'm a complete beginner with Javascript which I assumed would be necessary for generating the number. I've sort of figured out how to generate the number but I can't figure out how to get that number into a read-only field on the form so that it will be both visible to the client and sent with the rest of the data on the form to the owner.I've had a number of attempts but this is what I'm trying at the moment:

Code:
<html>

[code]....

## Adding Table Rows - Putting In A Dropdown Box That Contains Numbers That Will Dynamically Show The Rows

May 1, 2009

i'm creating a ASP page, which is going to have a form in it that needs filling out. part of the form will be a table with a header row, then the next rows will have text boxes that need filling out. is there a way of putting in a dropdown box that contatins numbers that will dynamically show the rows. for example if i select 5, then five rows of text boxes will appear. if i select 14 then 14 appear.