JavaScript - How Can I Mod This To Accept (.) Decimal Place

Dear All,
I can check now a field is isNumeric via this method var isNumeric = /^[0-9.]+$/;. My problem now user can put two or more decimal and I want to limit just to single decimal and only 2 numbers before the decimal? How to edit please?

Hi..

I have javascript code with computation, but I have problem in my result because it was not round off or fixed into two decimal places only.

here is my code:

Code:

<script type="text/javascript">

function test_(cmpd) {
    var len_ = (document.frmMain.elements.length) - 1;
  
     for (i=0; i <= len_; i++ ) {   
    
       var strPos_ = document.frmMain.elements[i].id.indexOf(cmpd)
         
   
              if (strPos_ != -1) {
              var strPos = document.frmMain.elements[i].id.indexOf("_");
              
var strId = document.frmMain.elements[i].id.slice(strPos + 1) + "_" + document.frmMain.elements[i].id.slice(0,strPos)               
     // this is the computation that I need to fixed the result into two decimal places
    document.frmMain.elements[i].value = document.getElementById(strId).value * document.getElementById('mult').value;  
     } 
    }  
}
</script>

Thank you so much

This script is for car loan payments. I need a R simbol only before the monthly payment and only two figures after the decimal point. Can somebody pse help me with this. Thank you in advance.
Kees Meyer (keesmarcha)

<script language="JavaScript">
<!--
function showpay() {
if ((document.calc.loan.value == null || document.calc.loan.value.length == 0) ||
(document.calc.months.value == null || document.calc.months.value.length == 0)
||
(document.calc.rate.value == null || document.calc.rate.value.length == 0))
{ document.calc.pay.value = "Incomplete data";
}
else
{
var princ = document.calc.loan.value;
var term = document.calc.months.value;
var intr = document.calc.rate.value / 1200;
document.calc.pay.value = princ * intr / (1 - (Math.pow(1/(1 + intr), term)));
}

// payment = principle * monthly interest/(1 - (1/(1+MonthlyInterest)*Months))

}

// -->
</script>

The results of this loan payment calculator are for comparison purposes only.
They will be a close approximation of actual loan
repayments if available at the terms entered, from a financial institution. This
is being
provided for you to plan your next loan application. To use, enter values
for the
Loan Amount, Number of Months for Loan, and the Interest Rate (e.g.
7.25), and
click the Calculate button. Clicking the Reset button will clear entered
values.
<p>
<center>
<form name=calc method=POST>
<table width=60% border=0>
<tr><th bgcolor="#aaaaaa" width=50%><font color=blue>Description</font></th>
<th bgcolor="#aaaaaa" width=50%><font color=blue>Data Entry</font></th></tr>
<tr><td bgcolor="#eeeee">Loan Amount</td><td bgcolor="#aaeeaa" align=right><input
type=text name=loan
size=10></td></tr>
<tr><td bgcolor="#eeeee">Loan Length in Months</td><td bgcolor="#aaeeaa"
align=right><input type=text
name=months size=10></td></tr>
<tr><td bgcolor="#eeeee">Interest Rate</td><td bgcolor="#aaeeaa" align=right><input
type=text name=rate
size=10></td></tr>
<tr><td bgcolor="#eeeee">Monthly Payment</td><td bgcolor="#eeaaaa"
align=right><em>Calculated</em> <input
type=text name=pay size=10></td></tr>
<tr><td bgcolor="#aaeeaa"align=center><input type=button onClick='showpay()'
value=Calculate></td><td bgcolor="#eeeeaa" align=center><input type=reset
value=Reset></td></tr>
</table>
</form>
<font size=1>Enter only numeric values (no commas), using decimal points
where needed.<br>
Non-numeric values will cause errors.</font>
</center>

<p align="center"><font face="arial" size="-2">This free script provided by</font><br>
<font face="arial, helvetica" size="-2"><a href="http://javascriptkit.com">JavaScript
Kit</a></font></p>

I'm trying to write a pi calculator that shows a comparison of the calculated value to the actual value. It works, but the output of the comparison shows only the first two decimal spots, followed by two 9s.

Why is it showing two 9s and how can I make it more precise?

Code:

<head>
 <title>
  Pi Calculator
 </title>
 <script language="JavaScript">
  function calcpi(digitsn) {
   p = 1;
   s = 0;
   for (c = 3; c < digitsn; c += 2) {
    if (s == 0) {
     p -= 1/c;
     s = 1;
    } else {
     p += 1/c;
     s = 0;
    }
   }
   p *= 4;
   return p;
  }

  function hid(input) { //Highlight Incorrect Digits
   pi = "3.14159265358979323846".split('');
   input = input.toString().split('');
   result = "";

   for (c = 0; c < input.length; c++) {
    if (input[c] != pi[c]) {
     //result += "; " + input[c] + "!=" + pi[c];
     result += "<span style='background-color:red'>" + input[c] + "</span>";
    } else {
     result += input[c];
    }
   }

   return result;
  }
 </script>
</head>
<body>
 Repeat algorithm x many times:<br/>
 <input type="text" value="10000" id="digitsx"/><br/>
 <input type="button" onClick="document.getElementById('answer').value=calcpi(parseInt(document.getElementById('digitsx').value)).toString()" value="Calculate"/><br/>
 Result:<br/>
 <input type="text" readonly id="answer"/><br/>
 Correct value:<br/>
 <input type="text" readonly value="3.14159265358979323846"/><br/>
 <input type="button" value="Compare" onClick="document.getElementById('comparison').innerHTML = hid('3.1499')"/>
 <div id="comparison"/>
</body>

Hello all,

How to set decimal point in javascript ?
e.g.

var num1=23.12345;

I want output as 23.12

How can i do this ?

Please, guide me.

Thanks

I am trouble in comparing decimal number.

var1 = 0.25
var2 = 0.50

if (var1<var2)
{
alert("Value is less than minimum")

}
else
{
return true;
}

How can I make it work. Thanks for help in advance

I am having an issue with converting my decimal to a percentage... any suggestions? Thanks - it's probably an easy solution, but I am lost


below is my code (cost * .06) is where the issue is - Thanks!





var cost = prompt("What is the cost of your purchase?", "")
document.write("Return Value: "+cost,("<br />"));
var salestax = cost * .06
document.write("Return Value: "+salestax,("<br />"));
var total = cost + salestax
document.write(cost + salestax);

Hi,
Dreamweaver generated the javascript for an onBlur validation for an input textbox. Is it possible to change this code so that I do not have a range but, instead, specific numbers that must be input by the user? I want to ensure that the users input integers and only the following decimals: .25; .5, and
.75.

[function MM_validateForm() { //v4.0
if (document.getElementById){
var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=document.getElementById(args[i]);
if (val) { nm=val.name; if ((val=val.value)!="") {
if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
} else if (test!='R') { num = parseFloat(val);
if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
min=test.substring(8,p); max=test.substring(p+1);
if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
} } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
} if (errors) alert('The following error occurred:\n'+errors);
document.MM_returnValue = (errors == '');
} }
</script>]

John

Hello:

I have this js function:

Code:

<script type="text/javascript">
function updatesum() {
document.PaymentForm.newbalance.value = (document.PaymentForm.balance.value -0) - (document.PaymentForm.paymentamount.value -0);
}
</script>

I want to round the value of Code:

document.PaymentForm.newbalance.value

to two decimal points.

May I request some assistance!

function below will output price value in text field based on drop-menu option. It's working but I want it's always show value in 2 decimal point for variable 'price'. Can anyone help me with this problem?

function findPrice() {
if (document.getElementById("region").value == "blank") {
var price = document.getElementById("price");
price.value = "<?php echo 'Choose your region to get the price'; ?>";
}
if (document.getElementById("region").value == "Peninsular Malaysia") {
var price = document.getElementById("price");
price.value= '<?php echo $PM_Price; ?>';

}
if (document.getElementById("region").value == "Sabah/Labuan") {
var price = document.getElementById("price");
price.value = '<?php echo $SL_Price; ?>';
}
if (document.getElementById("region").value == "Sarawak") {
var price = document.getElementById("price");
price.value = '<?php echo $SR_Price; ?>';
}
}

I wrote this microday clock some time ago (with some difficulty) as a project,
and now I'm attemtping to make an octal version.

I'm still learning JavaScript, so I'm not sure exactly which line/s to edit
and what script to add to make it fuctional.

if anyone here can show me the most concise script needed
to convert the output of this JavaClock from decimal to octal
it would be very much appreciated

the original script to be converted is shown below :
------------------------------------------------------------

Code:

<HTML>

<HEAD>

<META NAME="JAVACLOCK">

<META HTTP=EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">

<META NAME="microday clock" INDEX="all">  

<META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css">



<STYLE>


BODY { 

	font-family: Digital Readout Expanded; 

}



</STYLE>

      

<TITLE>microday clock</TITLE>

</HEAD>

      

<BODY BGCOLOR=BLACK TEXT=BLUE ALIGN=CENTER LINK=ROYALBLUE VLINK=VIOLET>



<DIV ALIGN=CENTER>


<span id="clock">

<SCRIPT LANGUAGE="JavaScript">

<!-- Begin
function Clock() {

	Now = new Date();
	var DecTime = Now.getTime()/86400000 + 1004472;
	DecTime = '<FONT SIZE=5><FONT COLOR="#3399FF">' + DecTime.toString().substring(1,4) + 
		' ' + DecTime.toString().substring(4,7) + 
		'</FONT> <FONT COLOR="#33CC00">' + DecTime.toString().substring(8,11) + 
		' ' + DecTime.toString().substring(11,14) + '</FONT>'
	
	if (document.all)
		document.all.clock.innerHTML=DecTime
	else if (document.getElementById)
		document.getElementById("clock").innerHTML=DecTime
	else
		document.write(DecTime)
}

if (!document.all&&!document.getElementById)
	Clock()

function Increment() {
	if (document.all||document.getElementById)
		setInterval("Clock()",86)
}

window.onload=Increment

//  End -->

</script>

</span>

I am trying to develop a form that can give an estimate to viewers based on their input and I'm having a problem with decimal points.

I couldn't find a very good free script online so I've done some work with this one

http://www.mikeandzachsbbq.com/Catering/catering.htm

When you enter 10 in the input box, it calculate 10*19.99, giving 199.9, but I want it to show 199.90. I've tried adding toFixed(2) in there, but I'm not able to get that to work....any ideas?

Thanks in advance

Hey everyone.

I am looking to enforce the use of 3 decimal places in an input. I have found some scripts that do this, however, I also want to format it this way in case someone enters LESS than 3 decimal places.

If a user enters 1.25, I want it formatted as 1.250
If a user enters 1 I want it formatted as 1.000 etc.

Possible? Not sure where to start.

I'm a bit confused as I'm just learning PHP/Java, and need to display a percentage. I successfully can display a percentage, however, the decimal like any calculate displays .00000012130 whatever sometimes. How can I round the output to the nearest 10s place?

<script language="javascript" type="text/javascript">
var a = "14";
var b = "25";
document.write(parseInt(a) / parseInt(b) * 100);
document.write("%");
</script>

This is the code I use, however, it needs to be modified so that it rounds to the nearest 10 instead of display a decimal.

Hello,

Could someone help me with this problem?
I'd like the posted result to be a number with two decimals. I know how to make this normally but not with this kind of script.

Thanks very much in advance!

Code:

<html>
<head>
<script type="text/javascript">
            function calcResult(){
                document.getElementById('result').innerHTML = '';
                var num1 = newNumber(document.getElementById('txt1').value);
                var num2 = 0.429;
                var num3 = 1;
                if(isNaN(num1) || isNaN(num2)){
                    alert('Please enter a number');
                } else {
                    document.getElementById('result').innerHTML = num1 * num2;
                    document.getElementById('entry').innerHTML = num1 * num3;
                }
            }
            window.onload=function(){
                document.getElementById('btnCalc').onclick = calcResult;
                document.getElementById('btnCalc').onclick = calcEntry;
            }
        </script>
</head>

<body>
<p>
<input type="text" id="txt1" size="5" value="" maxlength="5" />
<button id="btnCalc">Calculate</button>
</p>
<p>
<span id="entry"></span> &times; 0.429 = <span id="result"></span>
</p>
</body>
</html>