|
JavaScript - Adding Values Of Checkboxes
Hi,
I'm currently designing a website for a takeaway company, and have one page displaying their menu. So that customers can easily calculate how much their takeaway will cost, I'm going to put checkboxes next to each item. Each of the checkboxes' value will be the price of the item, and I need a script that will add the values (prices) of the checkboxes they've ticked. They can then see the total cost of their takeaway without having to work it out, and add or remove items accordingly. I will then add a button which will print out a list of the items they ticked with the total price at the bottom. The customer can bring this in with them and the staff can easily see what they want and how much to charge them. Firstly, I need to know how to make Javascript add these values (and probably save them as a variable) Secondly, how would I make this display on the page (either after they click a button, or automatically so they can see the price real-time)? - I assume this would be basic coding --- Code: document.write(var) And finally, how could I make a script which would print only the items which are ticked, and the total price? Any help with this, even if you can only answer one of the questions, would be much appreciated. Thanks in advance! -- AJE Similar TutorialsHi, i feel kinda stupid asking this, but im kinda lost. I want to add up multiple values of groups of checkboxes. I managed to add up the values, but making it so that only one checkbox per group can be enabled at any time gives me a headache. Here is what i got so far, any hints to how to make it work would be really cool. Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=windows-1250">
<meta name="generator" content="PSPad editor, www.pspad.com">
<title></title>
</head>
<body>
<script type="text/javascript">
function Summe()
{
sum = 0;
if(document.Formular.m1.checked)
{
sum = sum + (1 * document.Formular.m1.value);
}
if(document.Formular.m2.checked)
{
sum = sum + (1 * document.Formular.m2.value);
}
if(document.Formular.m3.checked)
{
sum = sum + (1 * document.Formular.m3.value);
}
if(document.Formular.m4.checked)
{
sum = sum + (1 * document.Formular.m4.value);
}
if(document.Formular.m5.checked)
{
sum = sum + (1 * document.Formular.m5.value);
}
if(document.Formular.m6.checked)
{
sum = sum + (1 * document.Formular.m6.value);
}
if(document.Formular.m7.checked)
{
sum = sum + (1 * document.Formular.m7.value);
}
if(document.Formular.m8.checked)
{
sum = sum + (1 * document.Formular.m8.value);
}
document.Formular.black.value = sum;
}
</script>
<form name="Formular">
<INPUT TYPE="TEXTBOX" NAME="black" VALUE="" SIZE="3"> <br>
grp1<br>
<input type="checkbox" Name="m1" Value="411" id="411" onClick="javascript:Summe()"> <br>
<input type="checkbox" Name="m2" Value="412" id="412" onClick="javascript:Summe()"> <br><br>
grp2<br>
<input type="checkbox" Name="m3" Value="421" id="421"onClick="javascript:Summe()"> <br>
<input type="checkbox" Name="m4" Value="422" id="422"onClick="javascript:Summe()"> <br>
<input type="checkbox" Name="m5" Value="423" id="423" onClick="javascript:Summe()"> <br> <br>
grp3 <br>
<input type="checkbox" Name="m6" Value="431" id="431" onClick="javascript:Summe()"> <br>
<input type="checkbox" Name="m7" Value="432" id="432" onClick="javascript:Summe()"> <br>
<input type="checkbox" Name="m8" Value="433" id="433" onClick="javascript:Summe()"> <br> <br>
</form>
</body>
</html>
I'm using jqtransform and here's the function for the checkboxes. What code would I use the select/deselect all? Code: $.fn.jqTransCheckBox = function(){
return this.each(function(){
if($(this).hasClass('jqTransformHidden')) {return;}
var $input = $(this);
var inputSelf = this;
//set the click on the label
var oLabel=jqTransformGetLabel($input);
oLabel && oLabel.click(function(){aLink.trigger('click');});
var aLink = $('<a href="#" class="jqTransformCheckbox"></a>');
//wrap and add the link
$input.addClass('jqTransformHidden').wrap('<span class="jqTransformCheckboxWrapper"></span>').parent().prepend(aLink);
//on change, change the class of the link
$input.change(function(){
this.checked && aLink.addClass('jqTransformChecked') || aLink.removeClass('jqTransformChecked');
return true;
});
// Click Handler, trigger the click and change event on the input
aLink.click(function(){
//do nothing if the original input is disabled
if($input.attr('disabled')){return false;}
//trigger the envents on the input object
$input.trigger('click').trigger("change");
return false;
});
// set the default state
this.checked && aLink.addClass('jqTransformChecked');
});
};
Hi, I'm having problems getting the values of selected checkboxes and outputting them to a textarea. This seems like quite a simple thing to do but its causing me a lot of bother! I am using a mixture of JavaScript and jQuery to find a solution to this. Code: <h2>Booking Form</h2> <form name="booking"> Please choose the days that would suit your visit: <br/> <input type="checkbox" name="days" value="Monday">Monday<br/> <input type="checkbox" name="days" value="Tuesday">Tuesday<br/> <input type="checkbox" name="days" value="Wednesday">Wednesday<br/> <input type="checkbox" name="days" value="Thursday">Thursday<br/> <input type="checkbox" name="days" value="Friday">Friday<br/> </form> <textarea id="output"> </textarea> Code: var values = $("#days").val() || [];
$("p#ss").html("<strong>Checked values:</strong> " + values.join(", "));
//This just outputs "Checked values:" to the paragraph 'ss' that I created just to test it this way.
Help with this would be appreciated. Hello Thanks to those people on this Forum who have provided me with help, along with my little knowledge of Javascript I have been able to create the basis of a form for my Skittle League which will allow teams to submit results over the web. I have one calculation to complete before I look to make the form live and I am hoping someone can provide the final peice of the jigsaw. The scoresheet can be found at http://www.stroudskittles.co.uk/test/scorecard.html The form adds togther the 5 values for each half for each team and places them in a Half Total box below. The form adds together the two totals for each half for each team then places them in a Total box below I have been able to add a operation using the onchange event the points are automatically calculated for each half and total, depending on the overall scores, 2 points for a win, 1 for a draw 0 for a loss. What I'm struggling to do is add the three points totals together to generate the Overall Points for a team and place them in a text box at the top of the scoresheet (marked xxx on the page). Can anyone suggest the best method to do this. Also is it possible to combine the sums into one script therefore reduing the overall size. Your help very much appreciated It adds fine when any number but 12.3 is used if 12.3 is used however it gives 54.099999999999994 var liu = [10.6,11.2,9.4,12.3,10.1]; var calculateTotal= function(raceTimes){ var totalTime; var raceTime = raceTimes[0]; var i =0; for (i = 0; i< 4; i++){ raceTime = raceTime+raceTimes[i]; totalTime = raceTime; } return totalTime; }; var liuTotal = calculateTotal(liu); console.log(liuTotal); Hello, I am extremely new to JS so please bear with me. Any help is very much appreciated. Currently I am trying to take the values of 2 or more select boxes, add them together and then update a text field each time a selection in one of the select boxes is made. Basically, I am trying to keep a running total. Currently I have it set up so that onchange it grabs the selected value. The problem is that it is being processed as a string I believe. For instance, if there are two variables, a=111 and b=222, the output in the text field reads 111222. I tried using parseInt, but that just returns NaN (not a number?...just a guess). I have seen this solved with if statements, grabbing the selected index # and then assigning an integer, but I am hoping there is an easier way. Again, your help is appreciated. I have some asp:radiobutton lists that need to update a label with the sum of their values each time a user selects a new value. I am brand new to javascripting and would like some insight on how to get this done. I have inserted my code below. Code: <asp:Label runat="server" Text="Greeting:" /> <asp:Label runat="server" ForeColor="Red" ID="lbl_GreetingScore" Text="0" /> <asp:RadioButtonList ID="rdb1_1" runat="server" RepeatDirection="Horizontal"> <asp:ListItem Selected="True" Text="N/A" Value="4" /> <asp:ListItem Text="Yes" Value="4" /> <asp:ListItem Text="No" Value="0" /> </asp:RadioButtonList> Hey javascript newbie, Im trying to figure out how to add different radio if its selected or not example: Radio_Button1 value="5": Selected Radio_Button2 value="15": Not Selected Radio_Button3 value="25": Selected Radio_Button4 value="35": Selected var addingitup = ??? and im lost???? Hey CF, I'm currently working on a website called 'eXtreme Gaming' I've almost completed it, apart from two things. - Adding two values on my checkout page for the Grandtotal (I've tried everything, but I'm too much of a noob and have probably missed something small). - Validation of forms (I don't know where to start here, I've looked on w3schools for tuts etc but I'm having difficulty incorporating it on my site) I'm going to put the code for my checkOut page only, if you are able to help me many thanks in advance. [quote] Code: <HTML>
<HEAD>
<script language="JavaScript" src="laptopsCookie.js">
</script>
<script language="JavaScript" src="desktopsCookie.js">
</script>
<script language="JavaScript"><!--
function calculateTotalPurchaseLaptop(formRef)
{
var laptopTotal=0;
for (var i=0; i<LaptopListPurchase.length/2;i++)
{
var subTotal = formRef.elements['quantity'+i].value * formRef.elements['price'+i].value;
formRef.elements['subTotal'+i].value = subTotal.toFixed(2);
// document.orderForm2.grandTotal.value = document.orderForm.laptopTotal.value + document.orderForm2.desktopTotal.value
laptopTotal += subTotal;
}
formRef.laptopTotal.value = laptopTotal.toFixed(2);
}
//--></script>
<script language="JavaScript"><!--
function calculateTotalPurchaseDesktop(formRef)
{
var desktopTotal=0;
for (var i=0; i<DesktopListPurchase.length/2;i++)
{
var subTotal = formRef.elements['quantity'+i].value * formRef.elements['price'+i].value;
formRef.elements['subTotal'+i].value = subTotal.toFixed(2);
desktopTotal += subTotal;
}
formRef.desktopTotal.value = desktopTotal.toFixed(2);
}
//--></script>
<script language="Javascript"><!--
function checkform()
{
if (document.payment.Name.value == "")
{
alert('Please enter a name');
return false;
}
//else if(isNaN(document.payment.CreditCard.value) || document.payment.CreditCard.length !== 10)
//{
// alert('Invalid Credit Card Number');
// return false;
//}
else if (document.payment.Adress.value == "")
{
alert('Please enter your adress.');
return false;
}
else if (document.payment.State.selectedIndex == 0)
{
alert('Please select a state');
return false;
}
return true;
}
</script>
</HEAD>
<BODY>
<TITLE>Check Out</TITLE>
<script>
var html = "";
html += '<TABLE align="center"><tr><td><img src = "images/checkOutTitle.png" align="center" style="border:none" /></td></tr></TABLE>';
html += '<TABLE align = "center" border="2" cellpadding="2" cellspacing="2" width="80%">'
html += '<form id = "orderForm" name = "orderForm" method = POST action="javascript:void(0)">';
html += '<tr>';
html += '<th>Product</th><th>Quantity</th><th>Price</th><th>Sub Total</th>';
html += '</tr>';
for (var i=0; i<LaptopListPurchase.length;i=i+2)
{
html += '<tr><td>' + LaptopListPurchase[i] + '</td>';
html += '<td><select NAME="quantity' + i/2 + '" onChange="calculateTotalPurchaseLaptop(this.form)">';
html += '<OPTION VALUE="0">0</OPTION><OPTION VALUE="1">1</OPTION><OPTION VALUE="2">2</OPTION>';
html += '<OPTION VALUE="3">3</OPTION><OPTION VALUE="4">4</OPTION><OPTION VALUE="5">5</OPTION>';
html += '</select></td>';
html += '<td>$<input type="text" name="price' + i/2 + '" size=5 value="' + LaptopListPurchase[i+1] + '" readonly></td>';
html += '<td>$<input type="text" name="subTotal' + i/2 + '" size=5 value="0.00" readonly></td>';
html += '</tr>';
}
html += '<tr>';
html += '<td></td>';
html += '<td></td>';
html += '<td></td>';
html += '<td>$<input type=TEXT name="laptopTotal" value="" readonly size=7></td></tr>';
html += '</form>';
html += '</table>';
document.write(html);
// Update the quantities
//
var quantityLaptop;
for (var i=0; i<LaptopList.length/2;i++)
{
// Get the quantity of each type of Laptop
//
quantityLaptop = getCookie("Laptop" + i);
document.orderForm.elements("quantity"+i).value = quantityLaptop;
}
// Update the totals
//
calculateTotalPurchaseLaptop(document.orderForm)
var html = "";
html += '<TABLE align = "center" border="2" cellpadding="2" cellspacing="2" width="80%">'
html += '<form id = "orderForm2" name = "orderForm2" method = POST action="javascript:void(0)">';
html += '<tr>';
html += '<th>Product</th><th>Quantity</th><th>Price</th><th>Sub Total</th>';
html += '</tr>';
for (var i=0; i<DesktopListPurchase.length;i=i+2)
{
html += '<tr><td>' + DesktopListPurchase[i] + '</td>';
html += '<td><select NAME="quantity' + i/2 + '" onChange="calculateTotalPurchaseDesktop(this.form)">';
html += '<OPTION VALUE="0">0</OPTION><OPTION VALUE="1">1</OPTION><OPTION VALUE="2">2</OPTION>';
html += '<OPTION VALUE="3">3</OPTION><OPTION VALUE="4">4</OPTION><OPTION VALUE="5">5</OPTION>';
html += '</select></td>';
html += '<td>$<input type="text" name="price' + i/2 + '" size=5 value="' + DesktopListPurchase[i+1] + '" readonly></td>';
html += '<td>$<input type="text" name="subTotal' + i/2 + '" size=5 value="0.00" readonly></td>';
html += '</tr>';
}
html += '<tr>';
html += '<td></td>';
html += '<td></td>';
html += '<td></td>';
html += '<td>$<input type=TEXT name="desktopTotal" value="0.00" readonly size=7></td></tr>';
html += '<td></td>';
html += '<td></td>';
html += '<td align = "center"><b>Grand Total</b></td>';
html += '<td>$<input type=TEXT name="grandTotal" value="0.00" readonly size=7></td></tr>';
html += '</form>';
html += '</table>';
document.write(html);
// Update the quantities
//
var quantityDesktop;
for (var i=0; i<DesktopList.length/2;i++)
{
// Get the quantity of each type of Desktop
//
quantityDesktop = getCookie("Desktop" + i);
document.orderForm2.elements("quantity"+i).value = quantityDesktop;
}
// Update the totals
//
calculateTotalPurchaseDesktop(document.orderForm2)
</script>
<table align = 'center'>
<tr>
<td><h1>Pay for your Purchase Below</h1></td>
</tr>
</table>
<table border="1" align = 'center' >
<form name="payment" method="post">
<tr>
<td>
Name on Credit Card: <input type="text" name="Name" /><br />
Credit Card number: <input type="text" name="CreditCard" /><br />
Street Adress: <input type="text" name="Adress" /><br />
Town: <input type="text" name="Town" /><br />
State/Territory: <select NAME="State"><OPTION VALUE="Null">--</OPTION><OPTION VALUE="Australian Capital Territory">ACT</OPTION><OPTION VALUE="South Australia">SA</OPTION><OPTION VALUE="Northen Territory">NT</OPTION><OPTION VALUE="Queensland">QLD</OPTION><OPTION VALUE="Victoria">Vic</OPTION><OPTION VALUE="Western Australia">WA</OPTION><OPTION VALUE="Tasmania">Tas</OPTION></select>
</td>
<td>
<INPUT TYPE="RADIO" NAME="Master Card" VALUE="Master Card">Master Card<BR>
<INPUT TYPE="RADIO" NAME="Visa" VALUE="Visa">Visa<BR>
<INPUT TYPE="RADIO" NAME="AMEX" VALUE="American Express">American Express<BR>
</td>
</tr>
<tr>
<td></td>
<td><input type="submit" value="Submit" onclick="return checkform()"></td>
</tr>
</table>
</BODY>
</HTML>[
/quote] Hi gud mng, I have one problem... How to process textbox values/ call textbox values in JS through a Java program. My text box values are dates. I have to process these dates. Like in online banking we select day to know our transactions. After submitting we get results. remember my files are in my directory only. No need of database. My files are look like 20100929, 20100930, 20101001 For epoch_classes.js, epoch_styles.css u can download coding from this link : http://www.javascriptkit.com/script/...ch/index.shtml Code: Code:
<html>
<table width="900" border="0" cellpadding="10" cellspacing="10" style="padding:0">
<tr><td id="leftcolumn" width="170" align="left" valign="top">
<div style="margin-left:0px;margin-top:0px"><h3 class="left"><span class="left_h2">Select Option</span></h3>
<a rel="nofollow" target="_top" href="day_wise.htm" >Day-wise</a><br /> <br />
<a rel="nofollow" target="_top" href="between.htm" >Between Days</a>
<link rel="stylesheet" type="text/css" href="epoch_styles.css" />
<script type="text/javascript" src="epoch_classes.js"></script>
<script type="text/javascript">
var cal1, cal2;
window.onload = function ()
{
cal1= new Epoch('epoch_popup','popup',document.getElementById('popup_container1'));
cal2= new Epoch('epoch_popup','popup',document.getElementById('popup_container2'));
};
/*............*/
function confirmation(f)
{
var startdate = f.fromdate.value
var enddate = f.todate.value
var myday=new Date()
var yr=myday.getFullYear()
var mn=myday.getMonth()+1
var dt=myday.getDate()
var today=""
var present, ys, ms, ds, ye,me,de, start, end
if(mn < 10) { mn = "0" + mn }
if(dt <10) { dt = "0" + dt }
today= yr + "/" + mn + "/" + dt
present=yr + "/" + mn + "/" +dt
if (today < startdate )
{
alert (" Start date should not be exceed to-day's date " + present )
startdate.focus()
return false
}
if (today < enddate )
{
alert (" End date should not be exceed to-day's date " + present )
enddate.focus()
return false
}
if (today == startdate )
{
alert(" You are selected to-days date as Starting day" );
}
var answer = confirm("Do you want to continue ?")
if (answer)
{ if( startdate < enddate)
alert("Dates between " + startdate + " to " + enddate + " are confirmed" )
else
alert("Dates between " + enddate + " to " + startdate + " are confirmed" )
}
else
{
alert("Date not confirmed")
window.location="to_date.htm";
}
ys= startdate.substring(0,4);
ms= startdate.substring(5,7);
ds= startdate.substring(8,10);
start=ys + "" + ms + "" +ds
ye= enddate.substring(0,4);
me= enddate.substring(5,7);
de= enddate.substring(8,10);
end=ye + "" + me + "" +de
}
/*.......................................................*/
</script>
<div style="margin-left:100px;">
<body>
<style type="text/css">
#conf
{
margin-left:115px;
}
</style>
<td align="left" valign="top">
<table width="100" border="0" cellpadding="0" cellspacing="0">
<td style="padding-top:0px">
</table>
<h4>From Date</h4>
<form name= "formbet" id="placeholder" method="post" action="#" >
<input id="popup_container1" type="text" name= "fromdate" maxlength="10" size="20"/>
<td align="left" valign="top">
<table width="300" border="0" cellpadding="0" cellspacing="0">
<td style="padding-top:20px">
<h4>To Date</h4>
<input id="popup_container2" type="text" name= "todate" maxlength="10" size="20"/> <br /> <br />
<input id="conf" type="button" onclick="confirmation(this.form)" value="Submit">
</form>
</body>
</html>
In my coding, ys, ms, ds represents year starting, month starting, starting day... ye, me, de represents end... start,end gives file names in the format of yyyymmdd now i want to process files from 20100101 to 20100930 means from date is 2010/01/01 and to date is 2010/09/30 if i press submit button the files from 20100101 to 20100930 are processes here ys=2010 ms=01 ds =01 and ye=2010 me=09 de= 30 For this how do i call these textbox values (from date text box and todate) to another program (java) Thanks in advance. I have a bunch of checkboxes like below that the user can check some or all and click the button and see the values of all the selected checkboxes. How can I do that? Code: <script>
function alertValues(){
}
</script>
<input type="checkbox" class ="normal2" value="131971" name="list[]" >
<input type="checkbox" class ="normal2" value="131973" name="list[]" >
<input type="checkbox" class ="normal2" value="131975" name="list[]" >
<input type="checkbox" class ="normal2" value="131977" name="list[]" >
<input type="button" onClick="alertValues()"
have a simple calculator i made with checkboxes and some Js. the problem is that it does not work in FF. any idea how this can work for IE Safari AND FF Code:
function getPrice(amount, boxName){
total = eval() ;
checked = document.getElementById(boxName).checked
if (checked){
total = parseFloat(form1.Total2.value) + parseFloat(amount);
}else{
total = parseFloat(form1.Total2.value) - parseFloat(amount);
}
total.toFixed(2);
form1.Total2.value = total
document.getElementById("total").innerHTML = "Total $"+total;
}
Hi all. I have the following problem that I require a pointer with. I have a php variable named "$seatid" This could contain 1 or many entries. I have a page full of checkboxes named A1-8, B1-8, C1-8 etc to P1-8 I want a way of greying out the checkboxes on the page that relate to the values that are contained in the php variable. So they cannot be clicked. It would also like to change the colour of the cell that the check box is contained in. It is important that the checkboxes or at least the table that contain the checkboxes remain, as it represents the layout of a theatre. Cheers for your help Good evening all, I have a bit of an issue with checkboxes - basically I need to allow only 1 selection and then have a comments box show when a checkbox is checked. I've gotten the comments box to show when the checkbox is checked but I can't seem to workout how to allow only one. I'd really like the user to be able to change their mind and make a different selection but only have 1 be selected at a time (sort of like radio buttons work). I know it would be much easier and probably better to use radio buttons but that isn't an option with this. (The actual HTML is produced using a style sheet in an application that I am interfacing with so all I can do is use the checkbox.) Here is the code I am using to show or hide the comments box. Code:
function HideComments()
{
var a1 = document.getElementById("crmForm_answer1").checked;
var a8 = document.getElementById("crmForm_answer8").checked;
var a2 = document.getElementById("crmForm_answer2").checked;
var a3 = document.getElementById("crmForm_answer3").checked;
var a4 = document.getElementById("crmForm_answer4").checked;
var a5 = document.getElementById("crmForm_answer5").checked;
var a6 = document.getElementById("crmForm_answer6").checked;
var a7 = document.getElementById("crmForm_answer7").checked;
var a9 = document.getElementById("crmForm_answer9").checked;
var a10 = document.getElementById("crmForm_answer10").checked;
if(a1==true)
{
document.getElementById("crmForm_answer1_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer1_value").parentNode.parentNode.style.display = 'none';
if(a8==true)
{
document.getElementById("crmForm_answer8_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer8_value").parentNode.parentNode.style.display = 'none';
if(a2==true)
{
document.getElementById("crmForm_answer2_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer2_value").parentNode.parentNode.style.display = 'none';
if(a3==true)
{
document.getElementById("crmForm_answer3_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer3_value").parentNode.parentNode.style.display = 'none';
if(a4==true)
{
document.getElementById("crmForm_answer4_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer4_value").parentNode.parentNode.style.display = 'none';
if(a5==true)
{
document.getElementById("crmForm_answer5_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer5_value").parentNode.parentNode.style.display = 'none';
if(a6==true)
{
document.getElementById("crmForm_answer6_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer6_value").parentNode.parentNode.style.display = 'none';
if(a7==true)
{
document.getElementById("crmForm_answer7_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer7_value").parentNode.parentNode.style.display = 'none';
if(a9==true)
{
document.getElementById("crmForm_answer9_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer9_value").parentNode.parentNode.style.display = 'none';
if(a10==true)
{
document.getElementById("crmForm_answer10_value").parentNode.parentNode.style.display = 'block';
}
else
document.getElementById("crmForm_answer10_value").parentNode.parentNode.style.display = 'none';
}
Thanks in Advance Sam All, I have the following code which validates a form has at least one checkbox checked before it submits it. However I want to make sure that there aren't more then 25 checked on the page. How can I do this? Code: function validate(field)
{
for (var i = 0; i < field.length; i++){
if(field[i].checked){ // if a field is checked form is submitted
return true;
}
}
alert("You need to have a check box selected to submit the form!");
return false; // if no fields are checked form not submitted
}
Thanks in advance! My form generates 1 to n records which contains check boxes. Based on some condition if I click a check box it has to check & disable some other check boxes automatically. I did it. But, at the same time if I un-check I have to un-check all the check boxes which were checked. Please let me know. Thanks a lot.
Hi, What's a good way/ideal data structure to achieve this? The objective of the code/function is to map user-inputted strings into a pair of specific, hard-coded strings. For example, say the user types "firefox" or "ff", or "fx". The output would be the pair ["browser", "mozilla"], for example. I'm currently using a multidimensional array, but it feels inefficient and I'm having trouble mapping an arbitrary number of inputs into 2 outputs. Code: var strings = [ ["input1", "output1a"],
["input2", "output1a"],
["input3", "output1a"],
["input1", "output1b"],
["input2", "output1b"],
["input3", "output1b"]
];
How should I map the elements ["input1", "input2", "input3"] => ["output1a", "output1b"] ? Another method I used previously was a massive switch statement. This fulfills my needs, but I'm not sure about the efficiency (though if I remember correctly, switch statements become more efficient as size grows, since it uses a hash table?). Code: switch (input) {
case "ff": case "firefox": case "fx" : case "ffox":
return ["browser", "mozilla"];
case "ie": case "internet explorer":
return ["browser", "microsoft"];
...
}
This script works via "elem.checked" which is great for checkboxes (see http://javascript.internet.com/forms...heckboxes.html), but I need it to work with image buttons instead where there is no "checking" going on. Is this possible? I tried elem.onclick and elem.clicked but neither works. I don't know enough about onclick conditionals. Please help. Code: function UpdateCost() {
var sum = 0;
var gn, elem;
for (i=0; i<4; i++) {
gn = 'game'+i;
elem = document.getElementById(gn);
if (elem.checked == true) { sum += Number(elem.value); }
}
document.getElementById('totalcost').value = sum.toFixed(2);
}
tl;dr: Want to make the above work with <a onclick="UpdateCost()"><img></a>, not <input type="checkbox" onclick="UpdateCost()"> Hi, I have a few checkboxes in a form. Some of them work independently, but some make the others go on and off. Specifically the lower ones are controlling the upper ones. Can anyone explain why please? Code: <td> <input type="checkbox" name="weddingitem1" value="Toppers" id="Toppers"/><label for="Toppers" >Toppers<br /> <input type="checkbox" name="weddingitem2" value="Champers" id="Champers"/><label for="Champers" >Champers<br /> </td> I am trying to get a link that when clicked it will check all the checkboxes in my form. My problem is that my values are stored in an array: <INPUT TYPE=\"checkbox\" name=\"emailArray[]\" value=\"$email\"> print"<br><a href=\"#\" onClick=\"checkAll()\">check all</a><br>"; Here is my javascript function : function checkAll(){ alert('hi'); var df = document.selectEmailForm.elements; for (var i = 0; i < df.length; i++) { if (df[i].name == "emailArray[]" ) { document.selectEmailForm.emailArray[i].checked=true; } } } Any ideas? Any help is greatly appreciated. Thanks for your time! |
|||||||