Modifying Round Function To Leave Two Numbers After Decimal Point?

May 9, 2010

This sci calculator listed in [URL] has Round function which rounds the result to a nearest integer. I wonder if it possible to easy modify it so that it would leave two numbers after decimal point when it perform rounding? The calculator's script has these codes related to Round:
<INPUT style="WIDTH: 74px; HEIGHT: 31px" onclick="Round()" type=button size=24 value=Round>
function Round()
I tried {form1.display.value=Math.round(form1.display.value,2);}, but it did no do it.

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Round Off Decimal Point Error?

Nov 18, 2009

I use the following to round off to two decimal point.It works fine

function roundNumber(rnum, rlength) {
var newnumber = Math.round(rnum*Math.pow(10,rlength))/Math.pow(10,rlength);
return newnumber;


how to get two decimal place instead of 1?

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JQuery :: Modifying ExpCollGroup Function In Share Point 2003

Nov 10, 2010

I am trying to modify the ExpCollGroup function within Share Point (2003) and don't have access to server or ows.js file where the function lives. I want the ExpCollGroup function to run (I'm using it to expand/collapse documents in a document library), and then when finished, want to be able to run my own function like DoSomething(). The below code works but fires before the ExpCollGroup code executes. What can I do to make the ExpCollGroup function execute, and then perform my DoSomething function?
$('[id^="img_"]').click(function() {
alert(The Expand/Collapse button was pressed but the loading of documents has not yet begun');})

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Round Up 2 Decimal Places

Nov 17, 2011

I am trying to use the following javascript [URL] to create something similar to the example on [URL] for a school project but I wondered if someone could advise me how I can round numbers to 2 decimal places in the field box as I have to convert the calculated value by an exchange rate, e.g.:

where x=100 and y=50

returns a value of 96.77419355. I would like to round this figure up to 2 decimal places so it would read 96.77 but I cannot figure out how to do this.

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Round Number (Value) To 2 Decimal Points

Dec 6, 2010

I have this js function:
<script type="text/javascript">
function updatesum() {
document.PaymentForm.newbalance.value = (document.PaymentForm.balance.value -0) - (document.PaymentForm.paymentamount.value -0);
I want to round the value of document.PaymentForm.newbalance.value to two decimal points.

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Round Variables Up To 2 Decimal Places?

Jan 11, 2010

My javascripting is getting there, I have been learning for the last week and I have produced a working script however im getting stuck with how you round a variable (stored user input) up to the nearest whole number to 2 decimals I have looked at many tutorials and I think that the math.round has to be used somewhere but I cannot work out the syntax to integrate it into my code because everywhere I have looked seems to be using document.write syntax:


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Decimal Point

Sep 7, 2006

Can anyone please help/direct me to find/write a simple Javascript function to clean up a decimal point or a coma on a number.

For Example I need
10.000 to become 10000
10,000 to become 10000

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Force 2 Decimal Point (money)?

Nov 30, 2011

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.[code]...

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Regular Expression :: Allow 1,2 Or 3 Digits Before Decimal Point

Jun 8, 2006

I wrote a regex to edit a decimal number. you're allowed 1,2, or 3
digits before the decimal point, and 0,1,2,or 3digits after the decimal
point. Of course, you can't enter a decimal point without at least a
digit after ("5." is invalid). So here is my regex


This works fine for every case except an integer. In other words, it
tests false for entering 5, or 567.

I don't see why it tests false for integers. I'm allowing 1-3 digits
before the decimal point, then a decimal point only if the next
character is a digit (the lookahead clause), and then 0-3 digits after
the decimal point.

I've gotten around this problem with other javascript code around
the regex, but I'd just like to know why this "clean" solution doesn't

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JQuery :: DOM Tag Not Found When Select String Includes A Decimal Point / Fix It?

Aug 30, 2010

I am doing some maintenance work on a classic asp web page that displays product information. I am changing how the page looks up the available quantities for the various sizes. The old method used several SQL queries to determine the number of sizes and available quantities and then used those results to build a table on the fly on the page.

My modification consists of a web service that consolidates product size availability from three different sources and delivers the data via an XML formatted return. I have also added DOM tags in the table that is built on the fly that identify each entry with the product id and size. So, for a product that has an ID of "P12345" and a size of "XXL," that corresponding cell in the table gets an id tag of "P12345_XXL."

My jQuery update statements worked just fine using this approach until the sizes included decimal numbers. My example for this is shoe sizes. A size represented by an integer (6,7,8,...,15,16,17, etc.) works fine. A half-size represented by a decimal (6.5, 7.5, 8.5,...) does not. Even though the period is contained within a string value, jQuery doesn't seem to be able to match the value with an id tag - and yes, I have verified that the two (the string that I am giving to the jquery select and the actual tag) do indeed match.

So far, the only work-around that I have come up with is to multiply numeric sizes by 10 and parse as integer values. Is this a "known issue" and is there a more elegant solution topursue?

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Comparing Decimal Numbers

Jul 31, 2010

I am trouble in comparing decimal number.

var1 = 0.25
var2 = 0.50
if (var1<var2)
alert("Value is less than minimum")

How can I make it work.

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Round Off A Number Function

Jul 22, 2002

To round off a value to a specified number of digits:

function RoundIt(Value,Digits) {
&nbsp;var P=Math.pow(10,Digits);
&nbsp;var R=Math.round(Value*P)/P;
&nbsp;var G=true;
&nbsp;while(G) {
&nbsp;&nbsp;var L=R.length;
&nbsp;&nbsp;var I=R.indexOf('.');
&nbsp;&nbsp;if (I == -1) {
&nbsp;&nbsp;} else {
&nbsp;&nbsp;&nbsp;var D=L-I-1;
&nbsp;&nbsp;&nbsp;if (D < Digits) {
&nbsp;&nbsp;&nbsp;} else {
&nbsp;return R;

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Imitate PHP Round Function In JS?

Jun 22, 2011

When rounding these 2 numbers in PHP and JS i get the following results:


PHP = 22.04
JS = 22.05 [code].....
I have tried many functions but cant seem to produce the same result as the PHP round. Does anyone have a solution to how can i get the same result using JS?

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Modifying The Look / Function Of An Alert Box

Nov 8, 2010

<script type="text/javascript">
function confirmation()
"Please Confirm Before Proceeding !" +
" +
"Display Name: " + document.forms["paypal"]["os0"].value +

First though JS is not my strong suit and the above code is something I found at the W3School site or whatever it is. What I would like to do if possible is add a Cancel button to the alert box that when clicked cancels the form submission it's attached to and keeps the user on the current page to modify the data they entered in to the form should they want to change it. As it stands, all there is is an Ok button and if you click the red x in the corner it acts as if you clicked ok so if a user wanted to change their form data they'd have to close the browser to start again. Aside from liking to add a cancel button I would also like to if possible change the alerts Ok button to read something different. Not sure yet, thinking either Submit or Proceed.

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Add External Js File On Client Webpage And Leave Window.onload Function Unaffected?

Jan 15, 2009

Theres this situation where i have to place a js file (say myscript.js) on a client's website to do something on their page (like create a div element with some content in it). Now, myscript.js works when window or DOM has loaded. The problem is that the client will/may also have onload functions which will be overridden by myscript.js if i place it at the end of the page or vice versa if at the top of the page.

Theres one (albeit obstrusive) way in which it can be done. Create multiple onload function (Simon Willison's script) within myscript.js and call that function from the client's webpage.But i dont want to add any inline javascript code on the webpage. Just the external js (myscript.js) file should do. Is it workable to load my script externally and not add any inline call to myscript.js as well as leave the client's javascript onload scripts unaffected?

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How To Convert Binary To Decimal With Function

Mar 28, 2010

I am trying to convert binary to decimal with this function but it doesn't convert to decimal, but does decimal to binary.
function bin2dec() {
var x = document.getElementById("bin").value;
if ((/[^0-1]/g.test(x)) || x == "") {
alert ("You must enter an integer binary number!");
document.getElementById("bin").value = "";
return false;
x = parseInt(x);
var dec = x.toString(10);
var hex = x.toString(16).toUpperCase();
var octal = x.toString(8);
var figs = "The decimal representation of " + x + " is " + dec + "<br>";
figs = figs + "The hexadecimal representation of " + x + " is " + hex + "<br>";
figs = figs + "The octal representation of " + x + " is " + octal + "<br>";
document.getElementById("result").innerHTML = figs;

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Function To Format A Number To 2 Decimal Places?

May 5, 2010

Is there a built in function to format a number to 2 decimal places and to add commas like below.


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Point Event Listener Dynamically To A Function Which Is In External .js File?

Apr 9, 2011

in the below code I am trying to dynamically add a button and an event listener to it.



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Function To Check Whole Numbers

Apr 8, 2009

I have a piece of javascript code.

1. It retrieves a value of a cookie (this works)

2. A function is called to check that only whole numbers were entered into an inputbox.

Code JavaScript:

When I load the page, the page gives a "The page loaded but with erros" warning, and the code doesn't work.

I call it using:

HTML Code:

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Getting Numbers In Function That Shouldn't?

Nov 29, 2010

Basically I'm going through and renaming div id's, etc to manipulate later in functions.I'm using jQuery's detach() which is working but for some reason my while (now for loops) are not working and providing me with bogus numbers.

var arrayFights=[0,1,2,3,4,5,6,7,8];
var counter = theBox; //where to start in the array
//first change numbers larger than counter
arrayFights[counter] = i;


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Function For Duplicate Numbers And Output

May 7, 2009

What's supposed to happen is when the program is run the user clicks on "Select your Numbers!" their then asked for 5 numbers which they input and then the numbers are checked by a function called �isAlreadySelected� for duplicates and if there is an alert is shown. When 5 numbers are entered correctly then they are shown by a window.alert.

Its done in to 2 functions

When I run the below code I'm prompted for the 5 numbers but it isn't checking for duplicates and my selection is undefined.

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Function - Checking Input Box For Numbers And Letters

Apr 24, 2011

This is my program:

And my question is how to make it display error if I have entered letters in the age box or numbers in a name box? Currently I have only if it is different from 1, so what should I write instead of 1 ?

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Array Sort Function Sorts On Chars Not Numbers

Jul 23, 2005

My question is ... How do I sort an Array on numeric, not character values ?

In the example below, after sorting the contents are 1,10,2,3 .

How do I get the contents to be 1,2,3,10 ? Code:

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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:

<TITLE>Assessment Task 3 : Rohan Gardiner</TITLE>
function maths(){
var response;
var answer;
answer = document.questions.answer.value;
if (answer==document.adding){
response = "correct";
} else {
response = "wrong";
} document.questions.result.value = response ;
} function randoms() {
rndNum = Math.random();
Num = rndNum*20;
document.write(Math.round(Num)+"+"+ Math.round(Num1));
} function adding() {
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" >

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Unable To Execute Function Designed To Calculate The Average Of Numbers Inputted?

Oct 4, 2010

I've been messing with this code for about a couple of hours, and I did everything down to the wire..yet still I am unable to get it to work. When I input the numbers, and click off to the side nothing appears down at the final textarea of the form which is suppose to show the average.I've tried just about everything, sadly all I have to go by is other example codes, and the very intricate instructions which states I must pass the values to the calcAvg() to the second function of performCalc(), which I did, and then I assigned the var calcResult another value. From there I did the return..and after that I'm rather loss as to what to do next to get this code to work, any tips?

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
<html xmlns="">


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Find The Average Of The Values In An Array Of Numbers Passed As Argument To A Function?

Apr 20, 2009

How do i use a function to find the average of the values in an array of numbers passed as argument to a function.(using java script) thank you for your help...

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