# Incorporate Equation Into If Statement But Cannot Get It To Calculate Properly

Jun 2, 2009

I am new to using Javascript and have been trying to incorporate this equation into my if statement but cannot get it to calculate properly no matter which method I use. Here is the function as I have it worked out presently.

[Code]...

## How To Calculate Properly?

Feb 15, 2007

Can someone explain to me how I should code to calculate this?

I want to let the user add 4 different numbers (this is done) and then I want to + these numbers with each other.

This is the code I got: var medel = tal1+tal2+tal3+tal4 ;

Let say the user enters 1+2+3+4. Then the result should be 10. But I get this number as result: 1234

What have I done wrong?

## Calculating Input Fields - Get The Math Function To Calculate And Display Properly

Nov 5, 2009

I can't seem to get the math function to calculate and display properly. Can anyone point me in the right direction.

Here is my code.

## JQuery :: Code - Else If Statement To Set Values - Not Closing Properly ?

Jun 7, 2011

With this code, it is not closing properly and I can not get it to work;.

"Its a radio button selection named "status" it has two values 0 and 1

<script type="text/javascript">

## OnClick Works Properly But Following If Statement Doesn't Work?

Sep 1, 2011

I have a simple problem that I can't solve. I am trying to code a "More Info" button/link to display some more technical details of an item, if required or wanted. I haven't tried incorporating any code in to my web site yet, first I am trying to test how it can be done in a seperate file.

What I have right now is a table with two cells. In one cell is static text, in the other is a hyperlink. The onClick event calls a JS function called "more_info()" in which a global varible is altered to contain the value 1.

Directly after these two cells is more JS (this is before the table ends). The JS here is checking to see whether the value of the global variable has been changed. If the value is 1, display information. There is no "else" clause because I don't want information displayed unless the variable is equal to 1, so it is not required.

I think I know what the problem might be. The browser is reading the code in question before I ever click the link and has already been executed before the variable is changed. I know JS is object oriented so it will not sit there waiting for me to click the button before reading the logical statements.

[Code]...

## Resolved Adding / Removing And Incorporate A Way For A Limit On The Number Of Fields

Mar 8, 2011

I'm trying to get my script below working. I've managed to get it to add fields dynamically but the remove function isn't right... and I can't think of a way round it. how can i incorporate a way for a limit on the number of fields that can be added?

<script type="text/javascript">
{
var x = document.getElementById("inputs");
x.innerHTML += "<input type="text" />";
}
function removeInput()
{
[Code].....

ah, i've just looked into the operators in more details and -= is just for numbers... so this won't work. i presume this is going to be the wrong method then.

## Avoid A Circular Equation In Js?

Oct 22, 2010

Im working on a project for my website where I would like to be able to change the value of a number by using js, and using getElemenById. For example:

"The taxi fare is \$25"
"A hamburger is \$4"

In the above sentence I would like to be able to change the value of 25 & 4 by giving them an id and then using js to increase (or decrease) their value, to allow for future inflation, without having to go back and manually change every number on lots of pages (if for example in 1 years time a hamburger is worth \$6 then the info above is outdated and should be changed). If i could use a variable such as "RateUSD = 1" I could increase "1" to say "1.05" and it would increase the value of all id='USD' by 5% onload rather than having to manually change it by typing.

I so far have come up with the code below, but I think the reason it does not work is because I have created a circular equation - id='USD" is the start of the equation, but it is also in the equation itself, and it is the resulting answer, so effectively I have created "A = A*B", or in this case "25 = 25*1.1"

I chose "id" as I would like to be able to have different currencies (with different id, such as 'EURO','GBP', etc) on the same pages and on multiple pages. I'll crack it eventually, I would just like to know if I'm heading in the right direction, or is there a better method that I could use? I found plenty of example for changing text with "innerHTML", but so far I haven't seen any for updating numbers onload by calculation, except for forms, etc, which are different.

The code:

<html>
<script type="text/javascript">
function changeCurrency(){

[Code].....

I will later put the js in an external file with a link to it "...src="support-files/currencyChange.js" (or something like that), but for now I have put it on the same page.

## Using Outputted Data From One Site In A Equation

Dec 10, 2010

I am looking to use the outputted data of the US Census' world population clock as the raw data for a javascript function on another site - does anyone know if it is possible, looking at their site?

[url]

Or there's an rss feed of it here (xml) here:

feed:// [url]

## Vector And Magnitude - Two Points P1(30, 20) And P2(30, 221) And The Parametric Equation

Nov 22, 2011

I can't figure out this math problem. I have two points p1(30, 20) and p2(30, 221) and the parametric equation of the vector is (x-30)/(30-30)=(y-20)/(20-221)=t x=30, y=20-201*t

I'm thinking t is the magnitude or the distance. For a point P which is 10 pixels away from p1 on the vector, x=30, y=20-201*-10 (should be around -0.85) which is not the right P i'm looking for. Where am i doing wrong?

## Math Equation Getting Values From Form Fields?

Dec 8, 2010

I am having some trouble trying to fix my math equation to calculate the total rent by aquiring values from my form fields. Converting the date fields to days and finding the number of days via two date fields is mainly where I am having trouble. Also, I am trying to have a window pop up before submission but the onclick event does not seem to function properly.Below is the math equation I have come up with:

//calculate days from date field
function calcTotal(date1, date2) {
//assign variables

[code]....

## JQuery :: Incorporate Two Files - If The Main Js Is On The Page Part Of The Page Does Not Work?

Jun 22, 2011

I am trying to incorporate two javascript files (using jQuery) and they are creating a conflict.If the main js is on the page part of the page does not work. If I do not include it my menu and some related features do not work correctly.One code is long so here is the link to it: *I removed Link* (this is the main code for the menu etc)The other js is:

Engine.Initialize();
if( !\$('body').hasClass('index') && !\$('body').hasClass('homepage') ) {[code]....

## If Statement Returning False On A True Statement?

Apr 4, 2011

my webstie allows users to change the color of the background, so to keep the text readable I have it changing as well.the color picker I am using has text boxes with rgb values 0-255 for each.I am trying to get one bit of text to alternate between red and blue with the conditions

Code:
if(blue>green && blue>red)
{

[code]....

## Using The Hash Value Properly. Js/php

Jan 20, 2007

For my links I have two portions. The first is the regular href for people that don't have javascript can navigate the site and the next an onclick for those with javascript can load pages inline with transitions and have it stay in their history for Firefox. All a la that wonderful ajax stuff everyone knows about by now.

It seemed like a good idea at the time...
Because it is stored in the #hash value these people can link another person that has javascript enabled as well to the page and have the page load. But that's it. So we have 96% some odd percent of users included.

There is going to be confusion that happens if someone sends a link to someone without javascript, since it will just load the home page.

From what I have researched.. the server doesn't pick up the #hash value (this is obvious since when you click on a link that's linking to a spot in the page, it's the browser doing the work). That's okay, the thing I want anyway is for it to pick up on the very first request via well.. something. The first request is when the server does do something and may have a chance to do something with a hash value.

So questions:
1. Can I manipulate the server into 'reading' this #hash value on the initial request and then put it through say.. php or mod_rewrite?

2. What about css.. this is another client end thing that could work, but I am completely lost when it comes to css and recognising hash values. Even if it just works for Firefox/MSIE/Opera.. well.. that's something as it's non-intrusive and ups the people that can access my site properly.

There is an option to post a noscript tag to notify users on the first load that their javascript is off.. but there's no way for php to also be smart and say "hey, there's a Hash value"... as it could, I would just load the page that way. Code:

## How Do You Calculate A Sum?

Sep 22, 2004

I want to add onto my ebay auction a calculation which would show the unit price of a box of 5 electrical sockets.

So say it is currently on auction at £5.62 and I charge £1.99 Postage & packing thats a total of £7.61 with a unit price of £1.52. Then £1.52 is the figure I want to output and show on screen.

## How To Calculate With JS?

Nov 20, 2002

I'm just starting out in JS and would like to know how to solve this.
I have an HTML form with 3 checkboxes, like a would-be order form. For example, on checkbox 1, the product is a toy car that costs \$5.00, second box is a cigar cutter for \$50, etc. I to have a button that when clicked, enters the total price (no taxes or subtotals) into a textbox field below in the same page.

## IE Not Detecting OnChange Properly

Jul 23, 2005

If I detect an empty textbox, I fill it with a value ('Dad'). If I do this twice, the second time around IE 6 fails to notice that I've cleared the textbox again, thus leaving the textbox cleared. Is there a recommended workaround? Opera 7.23 is detecting the second deletion fine.

## Cookie Does Not Appear To Store Properly

Jul 23, 2005

The purpose of my application is to require a website visitor to complete
a form before participating in a search application. I have a specific
reason for doing this with client-side javascript, but I'm not going to
go into the explanation of "why."

Ideally, the visitor goes to http://www.hopelandinc.com/golf-homes.html.
If they haven't registered in 90 days, they'll be redirected to a
registration form. Once they complete the reg form, they'll have a cookie
set (called "isRegistered") and be taken back to the golf homes page.

For testing purposes, it is not necessary to actually complete the form.
You can go to the golf-homes.html page, which will set the regReturn
cookie, and then bypass the form submission by going directly to
http://hopelandinc.com/registration-thanks.html

In short, it ain't working. (IE 6 test).

golf-homes.html calls the function securePage() below, which sets
regReturn and redirects to search-registration.html.

search-registration is a form that posts to an ASP script, then redirects
to registration-thanks.html

regReturn.

I've been trying to figure out why it doesn't work all day, and can't
find the problem. Hopefully some super-genius here will be able to help!

Here is the function I'm using to retrieve a cookie value ("regReturn")
and redirect to a specified web page:

## PasteHTML Not Working Properly

Aug 9, 2005

I'm running this line of code:

oTarget.pasteHTML(formattedHtmlText);

where oTarget is a text range object.

When formattedHtmlText is, say, "<STRONG><BUTTON
class=placeHolder>[[ContAmt]]</BUTTON>&nbsp;text</STRONG>" the HTML is
pasted properly and the UI is changed accordingly.

However, if formattedHtmlText is "<BUTTON
class=placeHolder>[[ContAmt]]</BUTTON>&nbsp;text" the HTML is not
pasted and there is no change in the UI.

## JQuery :: How To Use Noconflict() Properly

Oct 10, 2011

I have a problem where I have to use jQuery.noconflict(), but I have no idea how to use it properly.I'm working with some richfaces elements which uses the richfaces jQuery version and the countdown plugin from keith-wood.name/countdown.html which need another jQuery plugin.If I include the files for the coundown, the countdown works but the modalPanels didn't and vice versa.

<f:view contentType="text/html" xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"

[code]....

## Getting InnerHTML To Work Properly In FF?

Jul 12, 2009

i looked in one of my other projects that i recently finished, and the code seems to be identical.Basically it should generate an array of Canvases where individual letters can be written. Later other javascript code will try to determine which letter was written (letter recognition).The error that i keep getting is "ChangeThisID is Null".

here's the code:

<CODE>
<html>

[code]...

## PHP Variable Is Not Passing Properly?

Sep 8, 2009

Here's something that I tested without the PHP and it worked ok. Now that I've introduced the PHP to the document it doesn't work. The PHP variable is not passing to Javascript properly. By use of some cleverly placed alert boxes, I figured out that the only thing that is getting passed forward is something called : "object HTML ImageElement"

Specifically, I assign the element ID the unique ID number of the record in the SQL database. The problem isn't with the ID numbers themselves: They are alphanumeric and unique.I think it boils down to one of two lines of code. Either this isn't working (about line 12)

function expander(RecordID){

or perhaps it is when I am calling the function (about line 66):

echo "<img id='".\$row['IDNumber']."' src=".\$row['ImagePath']." width='5%' onMouseOver='expander(".\$row['IDNumber'].");' onMouseOut='shrinker(".\$row['IDNumber'].");'>";}

The PHP works (I can get the images to appear, so the connection to SQL and such isn't a problem). I am sure most of the JavaScript is good, too, as I said I had it all working prior to dropping in the PHP.Since I am not going from JavaScript to PHP I don't think I need AJAX. I just need the PHP to pass to JavaScript.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">[code]....

## Form Won't Submit Properly - Mix Of Php

Mar 5, 2010

I have quite a complex form, for me anyway. The form is meant to submit, use checkForm to see if the fields all pass the validation and then submit and run the PHP script to send the emails. Now, it is sending the emails and the validation works but it is not redirecting to \$NextURL like it should.

if\$(edtApplicantAge){} is supposed to set \$NextURL when the page first loads as \$edtApplicantAge is taken from POST information submitted via the previous form. I have echoed this and when it first lands on the page the age does show up.

\$edtEmail and \$edtAge are actions for the two forms on my page. I have only put one on as I dont want to flood my post with code. If anyone could see something thats missing id be so grateful. I spent hours yesterday and just couldnt figure it. Ive got this working in 3 other variations yet can't figure out where im going wrong on this one.

Sep 1, 2007

I am having two divs with ids nav and navLinks, that contain unordered lists of hyper links. I am calling a onload function named displayID that accepts div's id as a argument/parameter (nav and navLinks) twice with different parameters. the function is firing only once with the parameter that i first specify, even though i call the function twice. Am i doing anything wrong in calling the same function twice with different parameters? Code:

## Countdown Not Properly Working / What To Do?

Apr 14, 2009

I found the script from..

Here is my code (it is in a phpBB3 page) code...

On a normal HTML page it works, so I'm stumped

If anyone knows what could be going on here, or knows of another simple countdown script

## Calculate While I Type

Jun 29, 2006

I believe that this has been answered somewhere but I cannot find it. I have 51 textboxes on page. In 50 I can enter value. 51st should tell me what is average of entered numbers.

As user types I want script to iterate trough form count and sum non-empty fields and than divides this two numbers.I need to sum values from fields that have value (not emty fields) and to divide this number by number of non empty fields. This should occur on every change in any of those 50 textboxes so to have live preview of average.

I'm really new to JS and I don't know even how to sum these numbers.

## JQuery :: Way To Calculate A %

Mar 6, 2010

I have some data thats in a number, lets say 5455
.
Id like to get the TAX from an input, say like 2.5 percent. code...