JavaScript - Exponential To Number.

I need to write something like this: http://justsheri.com/webscripting/wsassignment/1049950/

If you look at the code there is 52 of these <img src = './images/blank1.png'

onClick='clickCard("qh",0)'/> where clickcard("numchanges", increments by 1) how is this done?

Thanks
Danny

Hi,

I have a string stored in a variable var = "4.25 houses".

I would like to only extract the currency value, ie "4.25" from this. Is this possible? Also I would like to divide and multiply the new variable I get... does this number need to be converted or something?

Thanks in advance!

I have a dynamic form that uses
Code:

    var input_box = $("<input type=\"text\" id=\"ac\" >")

I need to have a unique id for each input that is displayed.
How can I do this? I can't use vars or anything in there as variables don't work in this as it is?

Hi. I'm trying to make a web page using javascript for validation, but after the last 2 functions I wrote, 2 functions don't work anymore. I attached the file so you can see for yourself. And I know there are a few things I could do to the html, but I'm saving those for last. Any idea why the scripts don't work is much appreciated. (the functions that don't work a "cont_pag1" and "cont_pag2"...btw...they worked just fine until I wrote the last few functions (the ones for the pag4 div))...And sorry for the really strange language...

Hi All,

Im a total novice with coding other than html/css.

I have a video xml which, in which i need a new feature, could you help me with that?

Basically my video is being entered with a time of it - for example 30sec.

I have start and end trackers firing for the video but now i want to add impression trackers at 25%, 50%, 75%. I managed to do it using specifying seconds for the calls, but it becomes a pain to recalculate seconds for every video.

Any ideas I could follow?

Thanks,
AD

I am using a JavaScript price calculator. Right now it does everything I need except for one thing.

If you look at the "type" field, they can choose either woven or printed. Right now, if they choose "woven" it adds 6 cents to to the total as you can see in this portion of the code:
if (theForm.select.value=="woven") {
priceeach+=0.06;

Rather than 0.06, how do I get it to add a percentage--say 20%

The form is located he http://goo.gl/YlJWo

Thank you!

Hello,

I need to be able to get a number to 2dp without rounding e.g.

14.756 needs to be 14.75

I tried .toFixed(2) but this rounds.

I thought of converting to a string and performing string functions but it seems like over kill if there is an easier way.

thanks

This is quite easy yet hard.

I'm trying to apply something in my forums, where a member could post something let's say:

"Hi, I am number [random]1, 6[/random]"

And what would happen is that, a number from 1 to 6 would be the content, for example, it would be:

"Hi, I am number 3"

But if you refresh the page, it would still be the same number. Like it won't be randomized again.

So how do I make a javascript/html code that would make a one time number randomizer.

Ooook so this is probably the stupidest question ever. I know in java you can take advantage of a number being an int (not double) and divide by something without getting a remainder. But in javascript you dont declare what kind of variable something is.

So my problem is: Given any double or triple digit number, how do i get all but the last digit. Like if i have 13, I need to make an int with 1. If it's 103 i need one with 10.

Thanks!!

I need help on some code Code:

function makefarm(){
document.getElementById("farms").value ++ ; 
document.getElementById("pop").value -=2 ; 
document.getElementById("coin").value -=10 ; 
document.getElementById("lumber").value -=20 ; 
document.getElementById("CIfarm").value ++ ; 
document.getElementById("CIfarm").value ++ ; 
document.getElementById("CIfarm").value ++ ; 
document.getElementById("CIfarm").value ++ ; 
document.getElementById("CIfarm").value ++ ; 
}
function upgradefarm(){
document.getElementById("iron").value -=5 ;
document.getElementById("coin").value -=20 ; 
document.getElementById("farmupgrades").value ++ ; 
}
var food = function () {
	var f1 = document.getElementById('buttonhere');
	var f2 = '<input type="button" value="Make Farm" onclick="makefarm()" /> Farms:<input type="text" id="farms" size="1" value=0 style="background-color:transparent;border:0px solid white;" READONLY/> <input type="button" value="Upgrade Farm" onclick="upgradefarm()" /> Farm Upgrades:<input type="text" id="farmupgrades" size="1" value=0 style="background-color:transparent;border:0px solid white;" READONLY/> <br/><br/><br/> Current Income:<input type="text" id="CIfarm" size="1" value=0 style="background-color:transparent;border:0px solid white;" READONLY/>';
	f1.innerHTML = f2;
}

Code:

Coin:<input type="text" id="coin" value=50 size="1" style="background-color:transparent;border:0px solid white;" READONLY />
Lumber:<input type="text" id="lumber" value=100 size="1" style="background-color:transparent;border:0px solid white;" READONLY />
Iron:<input type="text" id="iron" value=25 size="1" style="background-color:transparent;border:0px solid white;" READONLY />
Food:<input type="text" id="food" value=100 size="1" style="background-color:transparent;border:0px solid white;" READONLY />
POP:<input type="text" id="pop" value=10 size="1" style="background-color:transparent;border:0px solid white;" READONLY />

so if i press the makefarm() button it will add to the numbers but if i press it again they will got to zero how could i make it remember the numbers?(the input boxes are the second code)

I can generate a random number between 1 and 9,
( var rand_no = Math.floor( 1 + Math.random() * 9 ); )
but I want to add that random number to a value that is enterred into an inputbox and get a total.
How can I do this using Javascript and put the result into a hidden field.
I will also need to use that same random number in another place on another form .

Thanks

I am trying to validate textboxes on my form. I got everything but phone number. I have three different textboxes. One for area, one for first three, and last one for last 4numbers. everything just need to be digit numbers I guess. What is REGEX expression should be for those three different area?

To Forum

Thank you for being here. I have taken 2 calculators and edited them to get almost what i want. I need the final answer to round up to a whole number.

The page is
http://www.La-Dore.com/Goldleaf-Calculator.html

The code i think you want to see is ....

Code:

<!-- end of script 1 begining of 2-->
<SCRIPT LANGUAGE="JavaScript">
function perRound(num, precision) {

	var precision = 3; 
	precision = parseInt(precision); 

    var result1 = num * Math.pow(10, precision);

    var result2 = Math.round(result1);

    var result3 = result2 / Math.pow(10, precision);

    return zerosPad(result3, precision);

}



function zerosPad(rndVal, decPlaces) {

    var valStrg = rndVal.toString(); 
    var decLoc = valStrg.indexOf("."); 

    if (decLoc == -1) {

        decPartLen = 0; 
        valStrg += decPlaces > 0 ? "." : "";

    }

    else {

        decPartLen = valStrg.length - decLoc - 1; 
    }

     var totalPad = decPlaces - decPartLen;   

    if (totalPad > 0) {

      for (var cntrVal = 1; cntrVal <= totalPad; cntrVal++) 

            valStrg += "0";

        }

    return valStrg;

}


function clear_field(field) {

		if (field.value==field.defaultValue) {

			field.value=''

		}

	}
	



//Division

function doMath(form) {

var firstnumber = 0;

var secondnumber = 0;

var tempvalue = 0;

firstnumber = eval(form.firstnumber.value); //first number

secondnumber = eval(form.secondnumber.value); //second number

tempvalue = (firstnumber) / (secondnumber);

form.calcresult.value = (tempvalue); //out

}

//  -->

</script>

Hi,

First, I'm a newbie in javascript and I need help to do something with a random numbers. I would like to put the result numbers in the "<td class="style1">#01</td>" section and an image in <td class="style1">img1</td> depending of the result number. Exemple : If the result number is #1 then the image Under the #01 will be an image associated to the number 1". Number 1 = "red circle.jpg", Number2 = "blue square.jpg", etc.

Am I clear ?

Here is my actual HTML canvas :
--------------------------------------

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Result</title>
<style type="text/css">
.a1{
position:relative;
font-family:Verdana;
font-size:20px;
color:#888888;
}
.style1 {
text-align: center;
}
</style>

<script language="JavaScript">

/*****************************************
* Lottery Picker (By Kurt at kurt.grigg@virgin.net)
* Featured on/available at Dynamic Drive DHTML(dynamic html) & JavaScript code library
* Modified by DynamicDrive.com for below config options
* This notice must stay intact for use.
*****************************************/

var totalnumbers=6 //input total numbers to generate
var lowerbound=1 //input lower bound for each random number
var upperbound=49 //input upper bound for each random number

function lotto(){
B=' ';
LottoNumbers=new Array();
for (i = 1; i <= totalnumbers; i++)
{
RandomNumber = Math.round(lowerbound+Math.random()*(upperbound-lowerbound));
for (j = 1; j <= totalnumbers; j)
{
if (RandomNumber == LottoNumbers[j])
{
RandomNumber=Math.round(lowerbound+Math.random()*(upperbound-lowerbound));
j=0;
}
j++;
}
LottoNumbers[i]=RandomNumber;
}
LottoNumbers=LottoNumbers.toString();
X=LottoNumbers.split(',');
for (i=0; i < X.length; i++)
{
X[i]=X[i]+' ';
if (X[i].length==2)
X[i]='0'+X[i];
}
X=X.sort();
for (i=0; i < X.length; i++)
{
OutPut=B+=X[i];
}
if (document.all)document.all.layer1.innerHTML=OutPut;
if (document.getElementById)document.getElementById("layer1").innerHTML=OutPut;
if (document.layers){
document.layers.layer1.document.open();
document.layers.layer1.document.write("<span style='position:absolute;top:0px;left:0px;font-family:Verdana;font-size:20px;color:#888888;text-align:center'> "+OutPut+"</span>");
document.layers.layer1.document.close();
}
T=setTimeout('lotto()',20);
//window.status=OutPut;
}
function StOp(){
setTimeout('clearTimeout(T)',1000);
}
//-->
</script>

</head>

<body>
<table border='0' width=250 style="height: 146px">
<tr valign='middle'>
<td align='center'>
<form name=form>
<input type=button value='Lottery Number Picker' onClick="lotto();StOp()">
</form>
<span id=layer1 class=a1>Result</span>
</td>
</tr>
</table>
<table style="width: 250px; height: 100px" cellspacing="0" cellpadding="0">
<tr>
<td class="style1">#01</td> //result number 1 have to be here
<td class="style1">#02</td> //result number 2have to be here
<td class="style1">#03</td> //result number 3 have to be here
<td class="style1">#04</td> //result number 4 have to be here
<td class="style1">#05</td> //result number 5 have to be here
<td class="style1">#05</td> //result number 6 have to be here
<td style="height: 50px" class="style1">#06</td>
</tr>
<tr>
<td class="style1">img1</td> //associated image of the result number 1 have to be here
<td class="style1">img2</td> //associated image of the result number 2 have to be here
<td class="style1">img3</td>//associated image of the result number 3 have to be here
<td class="style1">img4</td>//associated image of the result number 4 have to be here
<td class="style1">img5</td>//associated image of the result number 5 have to be here
<td class="style1">img6</td>//associated image of the result number 6 have to be here
</tr>
</table>
</body>

</html>
--------------------------------------

Thank you very much to helping me to understand how to do it !!

Sylvano





Reply With Quote




12-22-2014, 05:36 PM #2
Philip M View Profile View Forum Posts

Supreme Master coder! Join Date Jun 2002 Location London, England Posts 18,371 Thanks 204 Thanked 2,573 Times in 2,551 Posts

This is hideously old and indeed crude code. document.all applied to IE4 and document.layers to Netscape 3. <script language="JavaScript"> and document.write() are also long obsolete. As is T=setTimeout('lotto()',20); I would suggest you get hold of a more up-to-date code.


Simply rename your images 1.jpg, 2.jpg and so on, and display the appropriate one in its correct position.

I'll give you a far better lottery number generator:-

Code:

<!DOCTYPE html>
<head>
</head>
<body>

<script type = "text/javascript">

function mylotto()  { 
var rlts = document.getElementById("results");
rlts.value = ''; // clear results
var srtrlts = document.getElementById("sortedresults");
srtrlts.value = ''; // clear results
var hmany = document.getElementById("howmany").value; 
var max = parseInt(document.getElementById("maxnum").value);
if (isNaN(max) || max <= hmany) {
alert ("You must choose a number greater than " + hmany + " for the maximum number value!");
document.getElementById("maxnum").value = 49;
return false;
}

var numArray = new Array(max);
var chosen = new Array(hmany);
var uniqueList = new Array(hmany);
for (var i = 1; i <= max; i++) {  // set up array 1 to max
numArray[i-1] = i;
}

Array.prototype.shuffle = function() {  
var s = [];
while (this.length) s.push(this.splice(Math.random() * this.length, 1));
while (s.length) this.push(s.pop());
return this;
}

numArray.shuffle(); // shuffle the array

for (var i = 0; i < hmany; i++) {  // take the first howmany items
uniqueList[i] = numArray[i];
}
rlts.value = uniqueList.join("    "); 
srtrlts.value = uniqueList.sort(sortNumber).join("    ");

function sortNumber(a,b) {
return a - b;
}

//alert ("The unsorted random numbers a - \n" + uniqueList)
//alert ("The sorted unique random numbers a - \n" + uniqueList.sort(sortNumber));
}

</script>

<p>UNIQUE NUMBERS LOTTERY PICKER</p><br>

<form>  
Select How Many Unique Numbers <select id="howmany"> 
<option value=1>1</option>
<option value=2>2</option> 
<option value=3>3</option>
<option value=4>4</option>
<option value=5>5</option>
<option value=6 selected>6</option>
<option value=7>7</option>
<option value=8>8</option>
<option value=9>9</option>
<option value=10>10</option>
</select> 
<br>    
Enter the Maximum Number Value &nbsp<input type="text" id = "maxnum" value="49" size="2"><br><br> 
<input type="button" value="Here we go!" onclick="mylotto()"> 
<br><br>
Unsorted Results:-&nbsp<input type = "text" id = "results" size = "60"><br>
Sorted Results:-&nbsp &nbsp &nbsp<input type = "text" id = "sortedresults" size = "60">

</form> 

</body>
</html>

Quizmaster: In which river did John the Baptist baptise Jesus?
Contestant: The Amazon

Hi, I have what I thought was a fairly simple problem that I would be able to solve on my own, but the code I have found is just too complicated for me to understand, so id appreciate any help.

I think what i have is similar to the knapsack problem, but I have a really simple version of it.
http://www.ms.unimelb.edu.au/~moshe/...psack.html#def

Say I have a relatively small array of numbers:

2, 2, 3, 3, 4, 4, 5, 5, 5, 6, 7, 8, 9, 10. I just need to verify true or false if a combination of these numbers will add up to 21. The numbers will obviously be changing, ( and in array size), i guess i could just use if statements but it would be stupid and go on for ages.

Could anyone point me in the direction of some simple code, or easy to understand way to go about this problem?

Thanks