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change every number on lots of pages (if for example in 1 years time a hamburger is worth $6 then the info above is outdated and should be changed).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>
<head>
<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.
View 11 Replies
ADVERTISEMENT
Nov 29, 2005
<html>
<head>
<script type="text/javascript">
var useWidth = "400px";
var speed = 250 // greater is slower;
var message = "Now is the time for all good men to come to the aid of their country. That's one small step for man, one giant leap for mankind. Ask not what your country can do for you, ask what you can do for your country. | ";
// Remember to include the vertical bar | at the end of the message(s);
var mContainer = "";
var circleMsg = "";
var prevMsg = "";
var useFloat = "";
var xV = 0;
var xL = 0;
var msgLength = 0;
function updateMessage(){
if (circleMsg == ""){circleMsg = mContainer.lastChild.data}
else {circleMsg = prevMsg}
var separatorIdx = circleMsg.lastIndexOf('|');
if (separatorIdx == -1){separatorIdx = msgLength}
circleMsg = circleMsg.substring(1,separatorIdx);
var spliceStr = message.substring(0,msgLength-separatorIdx-1);
var dispMsg = circleMsg+spliceStr;
mContainer.removeChild(mContainer.lastChild);
mContainer.appendChild(document.createTextNode(dispMsg));
prevMsg = circleMsg+'|'+spliceStr;
setTimeout("updateMessage()",speed);
}
function startCrawl(){
mContainer.appendChild(document.createTextNode(message))
setTimeout("updateMessage()",3000); // delay before crawl start;
}
function stayHome(){
var nV = 0;
var nL = 0;
if(!document.body.scrollTop)
{
nV = document.documentElement.scrollTop;
nL = document.documentElement.scrollLeft;
}
else{
nV = document.body.scrollTop;
nL = document.body.scrollLeft;
}
if (nV == 0){window.scrollBy(0,1)}
useFloat.style.top = nV+xV+"px";
useFloat.style.left = nL+xL+"px";
setTimeout("stayHome()",50);
}
window.onload=function(){
mContainer = document.getElementById('crawl');
document.getElementById('isFloat').style.width = useWidth;
msgLength = message.length;
useFloat = document.getElementById('isFloat');
useFloat.style.left = ((screen.width-30)/2)-(parseInt(useWidth)/2)+"px";
xV = useFloat.offsetTop;
xL = useFloat.offsetLeft;
stayHome();
startCrawl();
}
</script>
</head>
<body>
<Table height=񟠠' width=ör'>
<TBody>
<TD>
<Div id='isFloat' style='position:absolute;bottom:20px;overflow:hidden;height:28px;border:solid black 1px;font-size:14pt;background-color:lightyellow;color:darkblue'>
<Div id='crawl' style='padding:3px;white-space:nowrap'> </Div>
</Div>
</TD>
</TBody>
</Table>
</body>
</html>
View 3 Replies
View Related
Jan 13, 2011
I have a created a list that has both live links and links that return false and go nowhere. On the latter I want to be able to remove the arrow that is shown in the circle and hints at navigation - but I want to keep it for the live links. As an aside to this how can I then stretch the settings box for the text as it appears to only stretch across 75% on the text.
View 6 Replies
View Related
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]
View 1 Replies
View Related
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?
View 3 Replies
View Related
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]....
View 3 Replies
View Related
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]...
View 6 Replies
View Related
Jun 13, 2011
I've got a Google map that allows you to enter your postcode and shows results within a certain radius of that point - a very common application of the API.I have it plotting a circle to represent the area covered (easy enough), but I'd like to "grey out" the map (e.g. by applying a semi-transparent layer over it) except for the area within the circle, which shows the map as normal.
View 4 Replies
View Related
Nov 23, 2006
I am trying to assign an "onclick" event to a dynamically-created DOM
element (an image).
I have read countless times that "eval()" is to be avoided at all costs.
However, I cannot seem to get my new onclick to work without it.
Here's what I have so far:
myeval = 'detachFile(this);'
detachImage = getElementById('detach-jfhahhf');
detachImage.onclick = function() { eval(myeval) }
This works perfectly fine for me, but this is a web-app that will be
exposed to public users, and I obviously don't want them being able to
eval anything if i can help it.
Can that be done without the eval()?
View 6 Replies
View Related
Oct 21, 2009
I'm using an ActiveX control in my html page.. Each time i load the page ie pops a message box to allow the activex to run or not . Is there any way to handle that message box using javascript. Or is there any other way to avoid that message box because each time the page loads i have to give yes and then proceed. By default i've to give yes is there any way to handle that using javascript.
View 1 Replies
View Related
Jul 20, 2005
I wrote this function to avoid the enter key in some of my textboxes.
In IE the function works as expected, in Netscape 6 or 7 it does not
work. How can I make my function works in both IE and Netscape.
<input type="text" maxlength="13" id="txtType" onKeyPress="NoEnter();"
/>
<Script language='Javascript'>
function NoEnter()
{
if (window.event.keyCode == 13)
{
window.event.cancelBubble = true;
window.event.returnValue = false;
}
}
</Script>
View 1 Replies
View Related
Jul 23, 2005
Is it possible to have only vertical scrolling enabled on a DIV?
style="BORDER:1px ; OVERFLOW: auto; WIDTH:799px; HEIGHT:249px;position:
absolute; top:0; left:0; "
will have both horizontal and vertica scrollbars once the dim of the content
exceeds the DIV's size.
Can it be made so only vertical scrollbars will appear?
View 5 Replies
View Related
Aug 23, 2005
Value entered in textarea is: "this "TEST" is not going well"
JS sends to server this value: "this "TEST" is not going well"
How to force JS not to convert the string ? I want JS to send exactly what
is typed in the form controls. Is there a function to call?
View 3 Replies
View Related
Jul 20, 2005
I have to access a website which does a stupid browser check and only
accepts Netscape 4.7. The problem is that I have to access the website with
Mozilla or Internet Explorer. Code:
View 11 Replies
View Related
Sep 12, 2009
currently i am developing w3schools type website.
w3schools has ' Try it Yourself ' tab when visitors can edit code for tutorial.i wanna doing this type of function and i have already done but only a problem facing.An additional code Website Analytic Code always appears in my ' Try It Yourself ' textarea field.how can i avoid this additional code?
View 1 Replies
View Related
Aug 17, 2010
I'm writing a very simple code. Basically, there will be an array of strings from which one is randomly chosen and written to an element on the page. Here is a simplified version of how I'm executing it:
<html>
<head>
<script type="text/javascript">
function dyk() {
document.getElementById('test').innerHTML = "foobar"; }
</script>
</head>
<body onLoad="dyk();">
<div id="test">Hello<br />
</div>
</body>
</html>
My only concern is the "Active Content" warning that comes up in IE. The clientele (mostly older people) are probably going to be IE users and many of them might be so untrusting of computers that they'll take the warning as a legitimate concern. Is there another way to write this simple code to avoid the warning?
View 1 Replies
View Related
Nov 10, 2010
I want to know how to avoid inserting multiple records. Below is my case;
(1) I have a jsp page - when a timer for a particular product reaches 3 mins, i am getting that particular productid and sending the productid through ajax
(2) in the ajax script, i am getting the product id and redirecting to a jsp page
(3) in that jsp page, i am inserting a record to a table for that particular productid. Everything works fine, but many records are inserting, i just want to insert only one record.how to stop or avoid inserting multiple records.
View 1 Replies
View Related
Jun 21, 2010
Say that you have a table with id Testresults. Now you also would like to show diffrent parts of that table inside diffrent divs that also contain a table.
for example
Code:
<div id="OK testcases">
<table id="oktestdiv">
<tr id="row1" class="ok"><td>ok</td></tr>
</table>
[Code]....
I naturally don't want to write the code for the table at multiple places of the page. Notice also that my site only contains of one site, containing many divs.
View 2 Replies
View Related
Jun 13, 2010
what's the way to avoid configuration object is undefined?
[Code]...
View 1 Replies
View Related
Nov 10, 2010
I want to know how to avoid inserting multiple records. Below is my case;
(1) I have a jsp page - when a timer for a particular product reaches 3 mins, i am getting that particular productid and sending the productid through ajax
(2) in the ajax script, i am getting the product id and redirecting to a jsp page
(3) in that jsp page, i am inserting a record to a table for that particular productid. Everything works fine, but many records are inserting, i just want to insert only one record.
View 1 Replies
View Related
Oct 19, 2006
I have a hyperlink that is draggable (using Prototype's "new
Draggable()" construct). I want to be able to drag the link without
actually 'clicking' the link once i end the drag. Is there a way to
disable this event? Code:
View 3 Replies
View Related
Mar 18, 2007
How to avoid the execution of a function at the time of defining.
Here i am giving the details.
I am creating the following div container through DOM.
<div id="content">
<a href="#" onclick="displayDiv('content')" Click</a>
</div>
The Code is:
var category_list = document.getElementById('category_list');
var dom_div = document.createElement('div');
dom_div.id = 'content'
var dom_link = document.createElement('a');
dom_link.href ='#'
dom_link.onclick = displayDiv();
val = document.createTextNode('Click');
dom_link.appendChild(val);
dom_div.appendChild(dom_link);
category_list.appendChild(dom_div);
The displayDiv Funcion
function displayDiv()
{
dv = document.getElementById('content'); //Here is the error.
}
The Problem is when the following script:
dom_link.onclick = displayDiv('content');
is executed it is calling the function displayDiv(name)
Here we have the code
document.getElementById('content');
which throws the error.
The reason is the div container is not yet created.
What I need is the function should be called only on the click event. It should not be called while I define it to the Click Event. (ie it should not be called at the time of defining)
How to achieve this.
View 6 Replies
View Related
May 12, 2010
I have developed a plugin for mutual selection on a list of elements.It works fine if I make those element into mutual list only once.
like $("appropriateSelector").toMutualSelect();
that plugin will add click event handler to each element and they remember the whole list by enclosure.
If I add new elements to that list. and do$("appropriateSelector").toMutualSelect(); again. New elements will behave as expected but old ones will have problems. Each old element will have the same handler bind multiple times to them. That will result like toggle two times andmessingup the outcome. How do I prevent this? I am trying to clean up their bound handlers but seems no luck.
View 1 Replies
View Related
Jul 26, 2010
I block some characters to be inserted in my input, for example I don't want the user to insert numbers in a firstname input
View 2 Replies
View Related
Jan 14, 2009
I have a text box and everytime I press enter on it I get the form submited. How can I avoid that behaviour? I tried:
for the text onKeyDown="donotsubmit()"
Code:
function donotsubmit {
var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
//alert(keyCode);
if (keyCode == 13) {
document.form1.submit()=false;
}// if
}
But dosen't seem to work.
View 5 Replies
View Related
Sep 30, 2009
i dont want to show the confirm message when using window.onbeforeunload.Please suggest a solution to hide the confirm message..
View 3 Replies
View Related
