Math Formula - Displays The Wrong Rebate And Amount Due

Jan 6, 2011

I'm making a loan processing system using javascript. But I can't get through with the right outputs because I cant make one formula right. Here are the specifications and requirements:


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Math Formula Input Form - "calculate" And "clear Fields"

Jan 12, 2011

I want to create a mathematical formula plugin for my website where users will enter their own numbers based on the formula in an html form style. The formula is (a)*(b)^2/800 I want their to be a box for users to submit their data which will be (a) & (b) and then a box below showing the calculation. Also buttons giving the users the option to "calculate" and "clear fields". Is there a website where I could input the formula and they could generate the coding?

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Jquery :: When Click On The Icon To Display The Datepicker - The Picker Is Displayed But It Displays On The Wrong Icon

Apr 21, 2011

I am using multiple instances of the jquery datepicker on my form. Due to my CSS i could not use the icon trigger built-into jquery, it caused the icon to be displayed below the input field and i wanted it to be displayed next to the text. Below is the code for one of my input fields.


I have multiple date fields i want to use the datepicker with. The issues i am having are; 1. when i click on the icon to display the datepicker, the picker is displayed, but it displays on the wrong icon. No matter what icon i click on it always gets displayed on only one and it is always the same one. Each field has its own unique name and id the only thing that each field shares is a class. I can't seem to figure out how to fix this. My other issue is that when i click on the icon the page scrolls to the top, so if i am clicking on a picker icon at the bottom of the screen it scrolls the screen to the top.

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How To Loop The Math.min And Math.max

Feb 20, 2010

the program that i want to create will first let the user input how many execution he want to perform and will determine the highest and lowest number that he inputted.

for example.

prompt: how many execution you want to perform?
i type: 5
prompt:input number:10
prompt:input number:8
prompt:input number:5


but it only allows for the up to inputs[6] and the code is very long. i think i can use looping in it. but i dont know to use looping in math.min and math.max.

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JQuery :: How To Write Formula

Jul 29, 2009

I'm trying to figure out how to write a formula in jQuery and am stuck... I have simple sums working by using the code pasted below. Now, I'm trying to write a more complicated formula but am unsure of the syntax... The formula I'm trying to write is: (value1 / (0.01 * value2 ))-1


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Check Formula While Typing

Nov 25, 2011

I have a textarea where i want the user to just enter the values: $x $y $z $a $b $c (,),+,-,*,/ ^ Here what i have so far Formula <textarea name="formula" onkeyup="check(this.value)" >

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Make A Formula For Table Height

Apr 20, 2011

i have want to make a formula for my table height.i have some result, every result is 300 pixel height i want to calculate table height= number of result * 300

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Excel Formula - Replace The Word With A Value In Cell?

Feb 24, 2010

in excel i want to replace the word bebo with a value in cell B1 this is the line CREATE TABLE IF NOT EXISTS `bebo` ( `id` int(10) NOT NULL auto_increment,`beboid` varchar(255) default '0',`status` varchar(255) default 'No Comment Posted',PRIMARY KEY (`id`))

in column B i have a load of values so i need an excel formula to replace bebo so that it will take values from B1 to B26 I know this is not the correct section to be posting in but couldnt find a relative section on this site..

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Convert Excel Formula - Equivalent For A Form?

Apr 7, 2011

I am trying to convert this excel formula into a Javascript equivalent for a form I am doing in Acrobat Pro 9 and you guessed it. everything is done apart from this.

=SUMIF(B2:B29,"LA",A2:A29)+SUMIF(F2:F29,"LA",E2:E2 9)

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Input Formula For Website - Calculate Data

Jul 27, 2011

I am in the middle of designing a website and I am pretty new at it. The guy I am designing the website for wants me to make input fields that calculate data that is entered into them. There are 3 formulas that I need to make.


They are the same formula just solving for different variables.

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Enable Uncertain Amount Of Textbox With Uncertain Amount Of Radiobutton?

Mar 30, 2010

when user populate info it will appear like this:

chkbox | name | number
radbtn | MJ | 234123
radbtn | MD | 343543
radbtn | AB | 453466

Is uncertain that how many info will appear as its from database. I am able to enable the radbtn with chkbox by getting radbtn name. How can i enable only the selected radbtn textbox under name and number in order for user to edit it?

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Formula - Convert Estimated Average Glucose To HbA1c And Vice Versa

Apr 17, 2011

I need a Javascript that can process two math formulas to convert Estimated Average Glucose to HbA1c and vice versa. The formulas are as follows:

(28.7 x A1C) - 46.7 = eAG
(46.7 + eAG) / 28.7 = A1c

It could be a two function javascript or two separate javascripts, I am not that particular as long as it does what I need it to do. The way I would like to see it work is you type the number you have into a field, and press a button to convert it. If it was a two function javascript you would have to select the conversion type you want do first.

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Help With Math.abs()

May 21, 2007

Anyone any idea why the Math.abs() isn't working in this code? I
thought it was supposed to convert negative numbers to whole numbers?

var se = [-27, -27, -27];
var time = 100
if(se[0] < 0){
Math.abs(se[0]); //<-- this isn't converting it to a whole number
se[0] += 1;
se[0] = (se[0]/(time / 4));

The result I get is -1.04 when it should be 1.12

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Jul 20, 2005

I remember there is a programming language where you can initialize the
random number generator, so that it can - if you want - give you the exactly
same sequence of random numbers every time you initialize it with the same
parameter. Can this be done with JavaScript? I couldn't find anything in the
documentation. Basically, what I want to achieve is to obtain always the
same sequence of random numbers for the same given initialization value (but
of course different sequences for different init values).

Can this be done in JavaScript?

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One Grid Displays Numbers, True Or False And Yes Or No, And The Other Grid Displays Letters, True, False, Yes And No?

Feb 15, 2012

I have two grids, they both display buttons. One grid displays numbers, true or false and yes or no, and the other grid displays letters, true, false, yes and no.

The second grid is not displayed in the code (used css to not display second grid buttons (.answerBtns)) Now using the getButtons() function, if the user selects button "1" in first grid (the grid which you have to open using (Open Grid) link, then it should display button "A" in second grid, if user selects button "2" in first grid, then it should displays buttons "A" and "B" in second grid, if "3" then display "A", "B" and "C" and so on.

Now except using if statements and stating which buttons should be displayed and not displayed depending on the button chosen in first grid, is there a more efficent way of coding this so that the display of buttons in second grid depends on what is selected in the first grid?

If it is using an array can somebody show a sample of this in their answer. You can just do it for one example and then I should be able to use that to fill it for the other buttons.

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Extending Math Functions

Jul 23, 2005

Javascript has a very small math function list. However there is no
reason that this list can not be extended greatly. Speed is not an
issue, unless you nest complicated calculations several levels deep. In
that case you need much more ram than a PC has to store functions
calculated in loops so that you do not have to recalculate every time
you cycle through the nest of loops. Using a HD for storage to extend
ram is much too slow for many applications.

Some functions such as hyperbolic ones are easy to add, since they are
just simple combinations of the built in javascript math functions. I
have found a few examples on the web such as Bessel functions. I found
far fewer javascript math functions than I expected on Google searches.
Thus I have had to write several functions of my own.

See for an example of two
"functions from hell" that are very difficult to evaluate. Fortunately
there are Fortran programs that can be used as a starting point. I was
able to modify the Fortran programs to work on javascript. I have used
these functions for technical applications in the past.

The page is set up to reject the NN 4 series, because it will not
support some of the script needed such as .toExponential(n) and
to.Fixed(n)for writing output in exponential or fixed format. I was
amazed that even the old MSNTV(former WebTV) set-top box, that no
longer is being made, will even support these output formats. I wonder
about IE4. If it will not support these output formats, I can easly
block it by checking for document.getElementById.

The code works properly on the latest versions of IE6, MSN9, Firefox,
Mozilla, Netscape, and Opera. I am not selling anything, so for a
special interest page such as this, I see no need to support older

The advantage of doing math with javascript is that it is so portable.
You can do it anywhere you can use a computer, or you can do it on your
own local computer offline. There are several math programs for PCs
that will do very much more than you can hope to do with javascript.
Unfortunately the program I would like costs about US$ 1800. Also there
are versions you can install on a server, but these also are expensive.

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Getting Nan Error With Simple Math

Mar 5, 2010

why I am getting Nan

<script type="text/javascript">
var num1;
var num2;
var num3;


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Firefox Math Messing Up Somehow?

Jun 18, 2010

<script type="text/javascript">
function countItDown(){
var current=parseFloat(document.getElementById("currentsecondscount").value);
var seconds=current;
document.getElementById("debug").innerHTML="S "+current;
var minutes=Math.floor(seconds/60);


im not sure why Firefox is doing this. it seems to work fine on Firefox 3.6.3 for Mac.

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Change CSS Property With Math?

Nov 23, 2010

I have this simple manual photo slide show. It shows four photos and when you click the next button and it moves one photo over and one photo back for the previous button. I have to moving by changing the CSS property of 'left' by 195 pixels each move. So for it to move next it will subtract 195 pixels from the left property and for moving back it add 195 pixels to the left property. I have the code setup so when you click it changes the property of left to either -195 or 195 pixels but I need it so it actually does the math, not just give it a set value. But I don't know how to do that.code...

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Allow Math To Be Eval'ed - But Not Malicious ?

Feb 10, 2011

I have a website that allows users to enter complex mathematical formulas into a text field and evaluates them.

I am currently using eval() because it not only can handle all the standard mathematical functions, but also gives them access to the Math object. That way the users can use functions such as Math.max() and everything else.

I realize, though, that using eval is evil, I assume because a malicious user might throw in some more damaging javascript that would be run without checking it. (That's why eval is evil, right?)

Is there a way that I can allow my users to construct complex mathematical formulas and use the Math object (or an equivalent) without potentially opening my site up to harm?

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Still Can't Fix Math.round / Make It Possible?

Nov 8, 2011

Just started to learn java & came up with the following, but can't get the math.round to work. Anyone able to tell me where I'm going wrong please ? code...

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Math Base 2 Logarithm?

Nov 10, 2005

If I have the following



and I now a how do I then find n with javascript?.

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Use Math Random() Distribution Three Div?

Nov 12, 2010

I have 3 divs. I want distribution them random (when refresh the windows, three divs' position will be changed)
I think Math random() can solve this problem, but how to do that? code...

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Math Operation On Class Name

Jan 21, 2005

i have a column which have some numbers into...
and any td of this columns have class="something"...
so i want to sum the tds of that column which have the same class name when i click on the first cell..

| | -> i click here
| 3 | -> class="ha"
| 4 | -> class="haha"
| 2 | -> class="ha"
| 8 | -> class="haha"

so here i want the sum in this column where the class name is "ha"...
so the sum is 3+2 = 5...

all that have to happens when i click on the first cell!
any suggestion??

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Need Help With Split And Math Functions

Nov 7, 2006

function finalSize(){
var size = document.getElementById('size').value;
var margin = document.getElementById('margins').value;
var mirrors = document.getElemntById('mirrorsRadio').value;

var size_array = size.split('x');
var h = size_array[0];
var w = size_array[1];

var finalH = ''
var finalW = ''

if(margin > 1){
finalH = h * margin;
finalW = w * margin;
document.getElementById('finalSize').value = finalH+'x'+finalW;
newH = h * margin;
newF = w * margin;
finalH = newH + h;
finalW = newW + w;
document.getElementById('finalSize').value = finalH+'x'+finalW;

I see it's ok, but it gives me this error:

Object doesn't support this property or method.

I don't know what I'm doing wrong. All I know is PHP, but from what little I learned on Javascript, my brain is telling me I'm right, but my experience is telling me I'm wrong. XD

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Math Exercise - How To Get Sum Value In Text3

Feb 15, 2012

I have following codes
<title>this is first math exercise within Java Script</title>
<script lanuage="Javascript">
function total(){
Var amount1 = text1.value
Var amount2 = text2.value
Var total=eval(amount1) + eval(amount2)
alter("Correct Answer")
} </script>
<table width="20%" border="1" cellpadding="1" cellspacing="1" >
<tr><td width="10%" align="center">Amount1</td>
<td width="10%"><input type="number" name="text1" value="" min="1001" max="8000"></td>
</tr><tr><td width="10%" align="center">Amount2</td>
<td width="10%"><input type="number" name="text2" value="" min="1001" max="8000"></td>
</tr><tr><td width="10%" align="center">Total</td>
<td width="10%"><input type="number" name="text3" value="" min="1001" max="8000""></td>
</tr><tr><td width="10%"></td>
<td width="10%"><INPUT TYPE="button" NAME="Submit" VALUE="Compute" onclick="total()">
<input type=reset Value="Clear" size="30"></td></tr>
I want to get summed value in text3 but function does not execute.

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