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JavaScript - Help Me With Addition Using Looping
hat i'm trying to achieve is to add two numbers using do while loop. below is the code however result wont show up. i cant seem to determine the error. help me pls.
Quote: <script = "text/javascript"> function myanswer(x,y){ x=parseInt(x); y=parseInt(y); i=1; sum=0; do { sum=x+i; i++; } while(i<y) document.myform.asnwer.value=sum; } </script> <form name='myform'> Enter First number:<input type='text' name='x'></br> Enter Second number:<input type='text' name'y'></br> Result:<input type='text' name='answer'></br> <input type='button' value='Click on Me!' onclick="myanswer(myform.x.value,myform.y.value);"</br> </form> Similar TutorialsCode: var purchasePrice = window.prompt("Please enter the purchase price:", 0);
function calculateTotalCost () {
if (purchasePrice <= 25) {
purchasePrice = purchasePrice + 1.50;
}
else {
purchasePrice = purchasePrice + (purchasePrice * 0.10);
}
window.alert("Your total price is $ " + purchasePrice);
}
I am still getting the same error, concatenation instead of addition, i can't figure out why. (i.e input 50, result 505 instead of 55.) Hi, I'm just learning JS by going through a book, while trying one of the examples in the book I ran into a problem with " + " operator. It think it's best I show by example (don't worry it's a fairly short script): Script Code: /* This is an attempt to do some math with javascript */
var a;
var b;
var c;
a = prompt("Pick your favorite number");
b = prompt("Pick your second favorite number");
c = a + b
document.write("a = " + a + ", b = " + b + ", c = " + c + "<br />");
document.write("<br />a + b = " + c + "<br />");
c += 6
document.write("<br />c + 6 = " + c + "<br />");
c -= 5
document.write("<br />c - 5 = " + c + "<br />");
c *= 3
document.write("<br />c * 3 =" + c + "<br />");
c /= 2
document.write("<br />c / 2 = " + c + "<br />");
c %= 7
document.write("<br />c % 7 = " + c + "<br />");
if (c > 0) {
document.write("<br /> Wrong!");
}
else {
document.write("<br /> You, I like")
}
Output Quote: a = 3, b = 4, c = 34 a + b = 34 c + 6 = 346 c - 5 = 341 c * 3 =1023 c / 2 = 511.5 c % 7 = 0.5 Wrong! As you can see the script doesn't execute the mathematical operation for addition. It instead strings it together. What am I doing wrong? Dear Experts I have following codes, it works fine to sum. but when I enter these values 2100.49+100.20 then it says 2,200.6,899,999,999,996 insted of 2,200.69. How to overcome this problem. Please help Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="language" content="english">
<meta http-equiv="Content-Style-Type" content="text/css">
<title>Numeric Textbox Sample</title>
<style type="text/css">
#box1 {width:200px;height:170px;border:1px solid green;background:#e3eeff;padding-top:20px;}
.button {width:100px;margin-top:0px;}
body {
margin:0;
margin-top:100px;
}
</style>
<script language="javascript">
function validate(evt)
{
var theEvent = evt || window.event;
var key = theEvent.keyCode || theEvent.which;
var backslsh = key;
var chck = String.fromCharCode( key );
var regex = /[0-9]|\./;
if( !regex.test(chck) ) {
theEvent.returnValue = false;
if(theEvent.preventDefault) theEvent.preventDefault();
}
}
function addCommas(nStr)
{
nStr += '';
var x = nStr.split('.');
var x1 = x[0];
var x2 = x.length > 1 ? '.' + x[1] : '.00';
var rgx = /(\d+)(\d{3})/;
while (rgx.test(x1)) {
x1 = x1.replace(rgx, '$1' + ',' + '$2')
}
return x1 + x2;
}
function fncSum2()
{
var amount1=form2.text1.value;
var amount2=form2.text2.value;
var a = amount1.replace(/[^0-9\.]/g,"");
var b = amount2.replace(/[^0-9\.]/g,"");
var nStr = (Number(a) + Number(b)).toString();
var rgx = /(\d+)(\d{3})/;
while (rgx.test(nStr)) {
nStr = nStr.replace(rgx, '$1,$2');
}
//nStr = "$" + nStr; // if $ prefix required
if (nStr.indexOf('.') == -1) { // if whole number add .00
nStr = nStr + ".00"
}
nStr = nStr.replace(/(\.\d)$/,"$10"); // if only one DP add another 0
return nStr
}
</script>
</head>
<body onload="form2.text1.focus()" >
<center>
<p>Enter 2100.49 in Amount</p>
<p>Enter 100.20 in Tax</p>
<p> and press + button<br>
It shows 2,200.6,899,999,999,996<br>
but I need 2,200.69</p>
</p>
<div id="box1">
<form name=form2>
<table width="100%" border="0" cellpadding="0" cellspacing="0">
<tr><td>Amount</td>
<td><input type=text name=text1 size=15 value="" onkeypress='validate(event)' onfocus="this.select
()" onblur="form2.text1.value=addCommas(form2.text1.value)" > </td></tr>
<tr><td>Tax</td> <td><input type=text name=text2 size=15 value="" onkeypress='validate(event)'
onblur="form2.text2.value=addCommas(form2.text2.value)"></td></tr>
<tr><td>Result</td><td><input type=text name=text3 size=15 value="" disabled></td></tr>
</table>
<hr>
<input class="button" type=button name=command1 value="+" onclick="form2.text3.value=fncSum2()"><br>
<input class="button" type=button name=command8 value="Focus" onclick="form2.text1.select
()";"form2.text1.focus()"><br>
<input class="button" type=reset name=command9 value="Reset">
</form>
</div>
</center>
</body>
</html>
So what I know about JS, you could write on a postage stamp, but I want t6o know if this is possible: On Page A: The user fills out a form, stating how many of each time of item they want, and the clicks submit, which mails the form to me (GenericPHP Mailer), and is rederected to page B. (That I can do) On Page B: The value of the items in the form on Page A is calculated, then a link is generated with a random order number, and the value of the order as link parameters. Can I do this? and how? Ok, so I have 4 textboxes with ids payment, payment1, payment2, payment3 and with each box is a submit button, named submt1-4 I need to know how I can add all of the values into one textbox named total. so when submit1 is clicked, it will add payment to the total, then when submit2 is clicked, it will add payment1 to the value, etc. But, each text box could be used more than once, so payment could be used 8 times, and each of the 8 times, it needs to add the proper value to the total. how would I do something like this? I need help adding an additional function to some existing java script code I already have. In addition to the functions already on this js, I want make it so the banner displays one of the images randomly on each new page load. I have an external js file that this page also links too. Not sure if I need to post that also. I was hoping to just add to this code. Any help is greatly appreciated <script type="text/javascript" src="js/homepage-banners/simplegallery.js"> </script> <script type="text/javascript"> var mygallery=new simpleGallery({ wrapperid: "simplegallery1", dimensions: [250, 180], imagearray: [ ["img/headers/automotive.jpg", "http://www.visionsystem.com/applications/automotive_metal.php", "", ""], ["img/headers/electrical.jpg", "http://www.visionsystem.com/applications/electronics.php", "", ""], ["img/headers/food-packaging.jpg", "http://www.visionsystem.com/applications/food_pharmaceutical.php", "", ""], ["img/headers/medical-pharmaceutical.jpg", "http://www.visionsystem.com/applications/food_pharmaceutical.php", "", ""], ["img/headers/semiconductor.jpg", "http://www.visionsystem.com/applications/electronics.php", "", ""], ["img/headers/automation.jpg", "http://www.visionsystem.com/applications/food_pharmaceutical.php", "", ""] ], autoplay: [false, 2500, 2], persist: false, fadeduration: 500, oninit:function(){ }, onslide:function(curslide, i){ } }) </script> Hello. Sorry the code example might be a little long but it's repetitive and should be easy to understand. http://jsbin.com/eyeke4/13/edit My real code has 12 examples and not 3 but for the sake of this I had to shorten it as much as possible. When you go on there and preview it, you Select a level, then select a hero, then select 3 items and hit click me. This will give you a result of statistics. Now my problem is all the way on the right you will see all 3 values of AP are added together. In the last column alone. The thing about it is if you change item #1 and item #2 it does not update properly..to update it you MUST change the last item each time, which is inconvenient. The way it works is : daap1 = iap1[isi1]; daap2 = iap2[isi2]; daap3 = iap3[isi3]; totalap = (daap1 + daap2 + daap3); $(".tap").html(totalap); Pretty much like this in a nutshell. if I were to put $(".tap").html((iap1[isi1] + iap2[isi2] + iap3[isi3])); it works perfectly fine. But I need to use the variable totalap in formulas. How do I make it so things always update properly without the user having to do inconvenient things like always having to reselect the last dropdown? In my main code I have 12 total, 6 and 6 split apart, for me to currently get accurate info I must reselect the 6th and 12th item every single time. Any help on how I could achieve this would be very much appreciated, do I need a database or something? I don't mind what I need as long as it would work perfectly. Thanks in advance. I need to loop through an array like this one: [1,2,4,8,8,16,32,64] I don't really know how to do this, so a little guidance would be great. Basically, I have 4 vars: a b c and d in the form of (ax + b)(cx + d) inside the loop something like this: i++ a = array[i] If (a*b > Math.floor(a) && a*b < Math.ceil(a)){ then increment i again and do the loop again} else{ break the loop and set leave a = array[i] } A code sample or something would be really nice (I don't know how to do the parts that are written out in text... Thanks! } public static void main(String[] args){ int oddNo; oddNo = getOdd(); } public static int getOdd(){ int oddNo = 0; Scanner sc = new Scanner(System.in); while (oddNo % 2 == 0){ System.out.print("Enter an odd number : "); oddNo = sc.nextInt(); System.out.println("Wrong input ! "); } if (oddNo % 2 !=0); System.out.print("The odd number is : " + oddNo); return oddNo; } however, the output: Enter an odd number : 10 Wrong input ! Enter an odd number : 8 Wrong input ! Enter an odd number : 9 Wrong input ! (how to remove this?) The odd number is : 9 hi to all... good day to u all... i have a noob question i followed this instruction Code: for (count=1; count<11; count++) {
javascript code here
}
at the bottom of my page i did this Code: <script type="text/javascript">
for (counter=1; counter<11; counter++) {
var followTrigger+counter+a = new Spry.Widget.Tooltip('following'+counter+'a', '#followMe'+counter+'a', {followMouse: true});
}
</script>
what im trying to do is to make multiple of this Code: <script type="text/javascript">
var followTrigger1a = new Spry.Widget.Tooltip('following1a', '#followMe1a', {followMouse: true});
var followTrigger2a = new Spry.Widget.Tooltip('following2a', '#followMe2a', {followMouse: true});
var followTrigger3a = new Spry.Widget.Tooltip('following3a', '#followMe3a', {followMouse: true});
var followTrigger4a = new Spry.Widget.Tooltip('following4a', '#followMe4a', {followMouse: true});
var followTrigger5a = new Spry.Widget.Tooltip('following5a', '#followMe5a', {followMouse: true});
var followTrigger6a = new Spry.Widget.Tooltip('following6a', '#followMe6a', {followMouse: true});
var followTrigger7a = new Spry.Widget.Tooltip('following7a', '#followMe7a', {followMouse: true});
var followTrigger8a = new Spry.Widget.Tooltip('following8a', '#followMe8a', {followMouse: true});
var followTrigger9a = new Spry.Widget.Tooltip('following9a', '#followMe9a', {followMouse: true});
var followTrigger10a = new Spry.Widget.Tooltip('following10a', '#followMe10a', {followMouse: true});
</script>
i dont know why it wont work... any help pls... hi there, I need to ask my users to input some numbers via textbox(or prompt) using a DELIMITER (,) between each digit. Then The program will display(list) when clicking a button. for this I will use three columns in the first column I have (2,4,6,9) to prompt. in the second column I have (3,4,7,10) to prompt. in the third columns I have (5,6,11,14) to prompt so the first lines should look like: 2,3,5 2,3,6 2,3,11 .... .... .... and the last line : 9,10,14 there should be 4x4x4=64 rows/lines How can we achieve this ? Thanks in advance What I want to make is an html that loop between 2 websites. so it starts out at website "a" (site "a" does have a timer that will redirect on its own) then it switches to website "b", and that goes on for 30 seconds and then switch back over to website "a" and so on forever. If someone could help me out with this, it would be greatly appreciated We were given a task at school today. Basically we need to have a prompt box popup, and the user enters numbers 1-12 (1 for each month of the year). The prompt keeps popping up until the user types "stop". It will display the months that were entered. Could anyone assist me with this, thanks. Hi ive got this code that hides the productPrice div if the productPrice div inner html is equal to $0.00 So far this works for the first product item on the page but how can i loop this so that it hides every productPrice div on the page? Code: function hide()
{
var intotal=document.getElementById('productPrice').innerHTML;
if (intotal)
{
intotal=parseFloat(intotal.substring(1).replace(/,/gi,"") );
if (intotal == 0.00)
{
document.getElementById('productPrice').style.display = "none";
}
}
}
hide();
cheers, help would be very much appretiated I have a script where I can PregReplace soething in a string with a defined value from my input field and it works like a charm. Code: <?php
echo '<input id="pfrom" type="text" value="" name="pfrom">';
?>
<script>
function demoRegex(){
var txt = document.newform.thestring.value;
var re = new RegExp(document.newform.pfrom.value, "g");
newtxt = txt.replace(re,'');
alert(newtxt);
}
</script>
But what if I have multiple input field like this: PHP Code: foreach($arr as $arr1=>$value){ echo '<input id="pfrom" type="text" value="" name="pfrom[]">'; } How do I get the javascript to run through all the fields? Hoping for help.... Thanks in advance ;-) Code: function funt()
{
var link = document.getElementsByClassName("class")[0];
if(link != null)
{
var i = 0;
if(check != link.childNodes[i])
{
link.childNodes[i].click();
check = link.childNodes[i];
}
else
{
window.location = "website"
}
}
else
{
if(document.getElementById('enbut').value != "some value")
{
document.getElementById('id').click();
}
window.location = "website"
}
t=setTimeout("funt()",3000);
}
with this i'm trying to get it to loop every 3 seconds using the settimeout function at the end of the loop. each time i run this it just runs once and exits. anyone know what i'm doing wrong? Hi Guys, I am trying to create a game similar to this https://www.carchallenge2014.com/practice.php What I want to know is how can I run a script so that the script will be able to click on the hands and increase the score. Willing to pay for the help as well. Tks Hi, I have this code.. Code: javascript:function showMore() {ProfileStream.getInstance().showMore(); setTimeout(showMore, 2000)}; showMore();
i want to loop it 10 times, but do not know how to do it. I have been told that the for var command is what I want, but I cannot get it to work. Any help would be appreciated. Thanks hi, in my code below I am using inlinecontent from thickbox which works but inside the <div id="myOnPageContent"> only shows the first Category Name and doesn't loop through but it is looping outside as it shows a different Category Name at teh top of my inline content please help! Code: <td class="smallcelltext"><input alt="#TB_inline?height=150&width=400&inlineId=myOnPageContent" title="Edit <%= rs1("CategoryName") %> Category" class="thickbox" type="button" value="edit" />
<div id="myOnPageContent">
<p>
<form>
edit <%= rs1("CategoryName") %>: <input type="text" name="CategoryName" value="<%= rs1("CategoryName") %>" />
</form>
</p>
</div>
</td>
Im trying to get all of these math functions into one table with each one going into an individual row. The following is what my Grad Assistant gave us as instructions..he is not real helpful..lol The goal of project to is to create a webpage that makes use of javascript to perform a dynamic number of operations. The program must first ask for a number of operations to perform (n).It is therefore required that a loop construct be used. The program will then ask the user n times what operation they would like to perform and the appropriate inputs for that operation. All of the operations will use integer type inputs except ceiling, floor, and round which will use float types. The required operations for this project will be 1. + 2. * 3. / 4. % 5. min 6. max 7. floor 8. ceil 9. round The output of each operation will be stored in a table. The required outputs for each row are the operation requested, the expression for the operation showing its structure (see below), the result of the operation and additionally a random number. The random number should be within one and the number of operations requested. (ex: 5 operations requested, random number is in the range 0-5) A sample of what this output will look like is shown here. let me know if you can help it is much appreciated..the course book does not cover most of what is being taught and in class time could be better spent self taught! lol ..midterms suck and its almost time for the weekend so I could really use some help!! thx again |
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