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JavaScript - Trying To Validate Checkboxes Are Checked
Can someone please help, I don't understand why my code doesn't work?!
I just want to check to see if a checkbox has been checked... Code: <script language="JAVASCRIPT" type="text/djs">
function checkCheckBoxes() {
if (document.f1.Times[].checked == false
{
alert ('You didn\'t choose any of the checkboxes!');
return false;
}
else
{
return true;
}
}
</script>
<form onsubmit="return checkCheckBoxes();" action="add-booking-script.php" name="f1" method="post">
<input type="checkbox" name="Times[]" value="07:00:00"> 07:00 - 10:00<br />
<input type="checkbox" name="Times[]" value="10:00:00"> 10:00 - 13:00<br />
<input type="checkbox" name="Times[]" value="13:00:00"> 13:00 - 16:00<br />
<input type="checkbox" name="Times[]" value="16:00:00"> 16:00 - 19:00<br />
</form>
Similar TutorialsHi, 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. display text depending dropdown Hey! I am creating a new function for my website which will make it very nice I believe. But since I am no good at javascript I have got quite stuck here but I don't think it's that hard afterall. Actually I'm not completely sure if javascript is needed but please lead me in the right direction here, I'm lost. What I want to make is depending what checkboxes the visitor choose and then click "Search" he will get a certain result which is categoried under these checkboxes. I don't know what else to say but I hope you get an idea of what I mean, if not please ask and I'll try explain it better. Thankful for your help I have a group of checkboxes named "list[]". I want to validate that at least one is checked. How can I do this?
Hello all, I have a form that submits a POST request when data is submitted. A Servlet then processes this POST request and a JavaBean is used to make some calculations. The HTML response is not generated within the Servlet but instead I forward the request to a JSP to generate the response. - This all works fine, thankfully. However, I am stupidly suck trying to validate the form on the client side with a JavaScript function before the form is submitted. Here is my index.jps: Code: <%--
Document : index
Created on : 19-Nov-2009, 13:41:30
Author : lk00043
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/JavaScript">
<!-- Start hiding JavaScript Statements
function validateForm() {
var student;
var score1, score2, score3, score4;
student = document.getElementById('student');
s1 = document.getElementById('score1');
s2 = document.getElementById('score2');
s3 = document.getElementById('score3');
s4 = document.getElementById('score4');
score1 = parseInt(s1.value);
score2 = parseInt(s2.value);
score3 = parseInt(s3.value);
score4 = parseInt(s4.value);
if(student.value.length == 0) {
document.getElementById('StudentError1').innerHTML = " Enter a student name!";
return false;
}
if ((isNaN(score1)) || (score1 < 0) || (score1 > 100)) {
document.getElementById('Error1').innerHTML = " Enter a number between 0 and 100!";
return false;
}
if ((isNaN(score2)) || (score2 < 0) || (score2 > 100)) {
document.getElementById('Error2').innerHTML = " Enter a number between 0 and 100!";
return false;
}
if ((isNaN(score3)) || (score3 < 0) || (score3 > 100)) {
document.getElementById('Error3').innerHTML = " Enter a number between 0 and 100!";
return false;
}
if ((isNaN(score4)) || (score4 < 0) || (score4 > 100)) {
document.getElementById('Error4').innerHTML = " Enter a number between 0 and 100!";
return false;
}
}
// End hiding JavaScript Statements -->
</script>
<title>Lab Class 7 - Task 2</title>
</head>
<body>
<h1>Lab Class 7</h1>
<form name="collectgrades" action="AssessGrades" method="POST" onSubmit="validateForm()" >
Name of Student: <input type="text" name="student" id="student"/><span id="StudentError1"> </span><br />
Presentation: <input type="text" name="score" id="score1"/><span id="Error1"> </span><br />
Writing style: <input type="text" name="score" id="score2"/><span id="Error2"> </span><br />
Technical content: <input type="text" name="score" id="score3"/><span id="Error3"> </span><br />
Depth of analysis: <input type="text" name="score" id="score4"/><span id="Error4"> </span><br />
Feedback:<select name="feedback" size="4" multiple="multiple">
<option>"Could be better structured."</option>
<option>"Depth of analysis is good."</option>
<option>"Very advanced material."</option>
<option>"Very well structured."</option>
</select><br />
<input type="submit" value="Submit" />
</form>
</body>
</html>
Regardless of whether incorrect input is given, the data is still POSTed to the server and calculated on or a Server Side error is given. Am I correct in calling the function onClick? The validation essentially needs to be so that: - Student field contains a string - Score1, Score2, Score3 and Score 4 contain a number between 0 and 100 Any help is most appreciated, Cheers, Beetle. So I have a form. Unfortunately, I'm not using a <form> tag, it's all div. Code: <div id="mainForm"> <div class="label"><input type="checkbox" id="LeftFixed" />Left Bar Always On Screen</div> What I'm trying to do is if that box is checked, execute a javascript. How do I do that? so if checked, execute 'sources/leftbar.js' or I could even just copy the code so it's inline, and not called. Is there a way to do this? hi i was wondering if there was anyway i can check a check box with the help of javascript and have it add text from a database record to a text box without submitting the page with the help from php? i have the php coding done to get the info and edit it but cant have no idea how to do the javascript code thanks. PHP code: PHP Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> </head> <body> <div id="user_pm"> <?php $sql="SELECT * FROM list WHERE username='usernamehere'"; $result=mysql_query($sql); $count=mysql_num_rows($result); ?> <table width="496" border="0" cellspacing="1" cellpadding="0"> <tr> <td><form name="form1" method="post" action=""> <table width="495" border="0" cellpadding="3" cellspacing="1" bgcolor="#000000"> <tr> <td align="left" bgcolor="#3576B4" width="26"><font color="#FFFFFF" size="2"><strong></strong></td> <td align="left" bgcolor="#3576B4" width="95"><font color="#FFFFFF" size="2"><strong>From:</strong></font></td> <td align="left" bgcolor="#3576B4" width="52"><font color="#FFFFFF" size="2"><strong>To:</strong></font></td> <td align="left" bgcolor="#3576B4" width="161"><font color="#FFFFFF" size="2"><strong>Message:</strong></font></td> </tr> <?php while($rows=mysql_fetch_array($result)){ ?> <tr> <td align="center" bgcolor="#f8f8f8" width="26"> <input name="checkbox[]" type="checkbox" id="checkbox[]" value="<?php echo $rows['id']; ?>" style="float: left"></td> <td bgcolor="#f8f8f8" width="95"><font size="2"><?php echo $rows['from']; ?></font></td> <td bgcolor="#f8f8f8" width="52"><font size="2"><?php echo $rows['to']; ?></font></td> <td bgcolor="#f8f8f8" width="161"><font size="2"><?php echo $rows['message']; ?></font></td> </tr> <?php } ?> <tr> <td colspan="6" align="center" bgcolor="#f8f8f8"> <input name="edit" type="submit" id="edit" value="Edit" style="float: left"></td> </tr> <?php $message = stripslashes($post['message']); $message = $_POST['message']; $checkbox = $_POST['checkbox']; $edit = $_POST['edit']; if($edit){ for($i=0;$i<$count;$i++){ $edit_id = $checkbox[$i]; mysql_query("UPDATE list SET message='$message' WHERE id='$edit_id' And username='usernamehere'"); } if($result){ echo "<meta http-equiv=\"refresh\" content=\"0;url=index.php\">\n"; } } mysql_close(); ?> </table> </form> </td> </tr> </table> </div> </body> </html> Thanks for clicking on this to possibly help me. I've been trying for hours to get my page to do one calculations when a radio is clicked... or to do another if a different radio is clicked. any help would be GREATLY appreciated. here is a simplified version of the code (it'd be pointless to give you the whole code, it's way too big.) Code: <html>
<head>
<title>This doesn't work...</title>
</head>
<body>
<script type="text/javascript">
function doit(){
var firstnum = form.num1.value - form.num2.value;
var secondnum = form.num1.value + form.num2.value;
if (form.op1.checked){
form.results.value = firstnum;
}
if (form.op2.checked){
form.results.value = secondnum;
}
}
</script>
<form name="form" method="post">
Num 1: <input type="text" name="num1" /><br />
Num 2: <input type="text" name="num2" /><br />
Option One <input type="radio" name="op1" /><br />
Option Two <input type="radio" name="op2" /><br />
<input type="submit" onClick="doit" /><br />
Results: <input type="text" name="results" /><br />
</form>
</body>
</html>
Hello! Thanks in advance for your help. I want to begin with the box checked (Yes, I want to subscribe to magazine) 1. The box is checked then go to email 1 (Thanks for subscribing) 2. The box has been unchecked then go to email 2 (Perhaps you need more info) Pat Hi, I'm using JavaScript to check (or leave empty) a checkbox based on stored data. Code: for (var q=0;q<document.Simple.Subject.length;q++) {
if (document.Simple.Subject[q].value == document.Restored.Subject.value) {
document.Simple.Subject[q].checked = true; break; }
It works perfectly, but I've discovered that it adds a simple "checked" to the form: Code: <input type="checkbox" name="Subject" value="Math" checked /> ... I thought I read that checked is not proper... it the attribute should really be checked="checked" . Is there a way to tweak this with JavaScript? Thanks. ~Wayne Sorted. Close thread please. New problem in post below VVV Is it possible to send a checkbox value to the DB when checked and or unchecked. I mean when you Physically chage it's state. I am running a PHP project, the page I need this functionality on has a dynamically built table from the Database. What I need to do is send the value "1" to the DB if I check on one of the rows "Published" checkbox and vice versa, removing the value of 1 from the db and changing the state to unchecked. The reason I ask in the JS forum is that PHP is a server side language and as such may not submit the change in realtime. Any help and or suggestions is much appreciated. I'm trying to find the best approach for saving the checked value of a checkbox in SQL With this script the FieldName "Active" toggles yes/no onClick... That we can post to the database no problem... What I am having trouble with is saving the checked value. I want to make the FieldName Active =hidden, and only display the checkbox with correct value checked yes/no. Code: <script type="text/javascript">
var YesOrNo = (function() {
if(document.select.checkbox.checked) {
document.select.Active.value = 'yes';
} else {
document.select.Active.value = 'no';
}
});
</script>
<form name="select">
<input type="hidden" name="Active" size="10" />
<input type="checkbox" name="checkbox" onclick="YesOrNo();" value="on" />
</form>
I am using 2-3 checkboxes in my VB.Net program.When I run the code in Firefox, I can not check or uncheck the checkboxes.I am using firebug,Still it does not show any error. It works fine in google Chrome.. Plz reply......... Hi I am very new to Javascript and I was wondering if anyone could help. This is my jQuery code: Code: $(document).ready(function(){
if("input.cf_flt:checked") {
$(".filterbox").show()
}
else {
$(".filterbox").hide()
}
$(".filtertoggle").click(function()
{
$(this).next(".filterbox").slideToggle(500);
});
});
HTML (sorry, quite a lot) Code: <h3 class="filtertoggle">Filter These Results <span>Click Here</span></h3>
<div class="filterbox">
<form name="cf_form" action="index.php" method="get"
class="cf_form topfilter">
<div class="cf_flt_wrapper">
<div class="cf_flt_header" id="cfhead_0">
Grape </div>
<div class="cf_wrapper_inner"
id="cf_wrapper_inner_0">
<ul class="cf_filters_list"><li><input onclick="window.location='/eden/index.php?custom_f_17[0]=50726f63616e69636f2c2056657264656c6c6f2c2047726563686574746f2c204d616c766173696120546f7363616e61&option=com_customfilters&view=products';" type="checkbox" name="custom_f_17[]"class="cf_flt" id="flt_50726f63616e69636f2c2056657264656c6c6f2c2047726563686574746f2c204d616c766173696120546f7363616e61" value="50726f63616e69636f2c2056657264656c6c6f2c2047726563686574746f2c204d616c766173696120546f7363616e61" /><label class="" for="flt_50726f63616e69636f2c2056657264656c6c6f2c2047726563686574746f2c204d616c766173696120546f7363616e61"><a href="/eden/index.php?custom_f_17[0]=50726f63616e69636f2c2056657264656c6c6f2c2047726563686574746f2c204d616c766173696120546f7363616e61&option=com_customfilters&view=products" class="cf_option ">Procanico, Verdello, Grechetto, Malvasia Toscana</a></label></li><li><input onclick="window.location='/eden/index.php?custom_f_17[0]=53616e67696f76657365&option=com_customfilters&view=products';" type="checkbox" name="custom_f_17[]"class="cf_flt" id="flt_53616e67696f76657365" value="53616e67696f76657365" /><label class="" for="flt_53616e67696f76657365"><a href="/eden/index.php?custom_f_17[0]=53616e67696f76657365&option=com_customfilters&view=products" class="cf_option ">Sangiovese</a></label></li></ul> </div>
</div>
<div class="cf_flt_wrapper">
<div class="cf_flt_header" id="cfhead_1">
Bottle Size </div>
<div class="cf_wrapper_inner"
id="cf_wrapper_inner_1">
<ul class="cf_filters_list"><li><input onclick="window.location='/eden/index.php?custom_f_18[0]=3735636c&option=com_customfilters&view=products';" type="checkbox" name="custom_f_18[]"class="cf_flt" id="flt_3735636c" value="3735636c" /><label class="" for="flt_3735636c"><a href="/eden/index.php?custom_f_18[0]=3735636c&option=com_customfilters&view=products" class="cf_option ">75cl</a></label></li></ul> </div>
</div>
<div class="cf_flt_wrapper">
<div class="cf_flt_header" id="cfhead_2">
ABV </div>
<div class="cf_wrapper_inner"
id="cf_wrapper_inner_2">
<ul class="cf_filters_list"><li><input onclick="window.location='/eden/index.php?custom_f_16[0]=31322e3525&option=com_customfilters&view=products';" type="checkbox" name="custom_f_16[]"class="cf_flt" id="flt_31322e3525" value="31322e3525" /><label class="" for="flt_31322e3525"><a href="/eden/index.php?custom_f_16[0]=31322e3525&option=com_customfilters&view=products" class="cf_option ">12.5%</a></label></li><li><input onclick="window.location='/eden/index.php?custom_f_16[0]=313325&option=com_customfilters&view=products';" type="checkbox" name="custom_f_16[]"class="cf_flt" id="flt_313325" value="313325" /><label class="" for="flt_313325"><a href="/eden/index.php?custom_f_16[0]=313325&option=com_customfilters&view=products" class="cf_option ">13%</a></label></li><li><input onclick="window.location='/eden/index.php?custom_f_16[0]=31332e3525&option=com_customfilters&view=products';" type="checkbox" name="custom_f_16[]"class="cf_flt" id="flt_31332e3525" value="31332e3525" /><label class="" for="flt_31332e3525"><a href="/eden/index.php?custom_f_16[0]=31332e3525&option=com_customfilters&view=products" class="cf_option ">13.5%</a></label></li></ul> </div>
</div>
<div class="cf_flt_wrapper">
<div class="cf_flt_header" id="cfhead_3">
Vintage </div>
<div class="cf_wrapper_inner"
id="cf_wrapper_inner_3">
<ul class="cf_filters_list"><li><input onclick="window.location='/eden/index.php?custom_f_15[0]=32303038&option=com_customfilters&view=products';" type="checkbox" name="custom_f_15[]"class="cf_flt" id="flt_32303038" value="32303038" /><label class="" for="flt_32303038"><a href="/eden/index.php?custom_f_15[0]=32303038&option=com_customfilters&view=products" class="cf_option ">2008</a></label></li><li><input onclick="window.location='/eden/index.php?custom_f_15[0]=32303130&option=com_customfilters&view=products';" type="checkbox" name="custom_f_15[]"class="cf_flt" id="flt_32303130" value="32303130" /><label class="" for="flt_32303130"><a href="/eden/index.php?custom_f_15[0]=32303130&option=com_customfilters&view=products" class="cf_option ">2010</a></label></li></ul> </div>
</div>
<input type="hidden" name="option" value="com_customfilters" /> <input
type="hidden" name="view" value="products" />
</form>
</div>
Basically if the checkbox with a class of cf_flt is checked then I want the div '.filterbox' to show. if the checkbox is unchecked then I want it to hide. As well as this I have a toggle button called '.filtertoggle' which toggles the '.filterbox' At the moment the '.filterbox' shows regardless of whether or not the checkbox is checked. The toggle button works correctly. If you know how to fix this then I would be very grateful. Thank you. hello I have a list of checkbox called de[] i use [] for create array in php so i have a button called "delete" so i want to activate the button if almost one of checkbox has been checked other way the input button will be disable. sorry for my english jejejeje. Regards I am creating an assignment and cant seem to figure whats wrong with my code. I just need it to loop through three different radio buttons and test which is selected, then display an alert box based on it. here is my code: Code: function displayOrder() {
// set var radio_choice to false
var selected = false;
var crustType = document.orderform.crust;
var crust;
// Loop from zero to the one minus the number of radio button selections
for (var i = 0; i < crustType.length; i++)
{
// If a radio button has been selected it will return true
// (If not it will return false)
if (crustType[i].checked);
selected = true;
crust = crustType[i];
}
if (!selected)
{
// If there were no selections made display an alert box
alert("Please select a crust type.")
return (false);
}
alert("you have selected " + crustType[i] + " crust pizza");
return (true);
}
}
here is my html form: Code: <form name="orderForm"> Welcome back: <br /><br /> Please select your crust type: <br /> thin: <input type="radio" name="crust" value="thin"/> <br /> thick: <input type="radio" name="crust" value="thick"/> <br /> none: (?!) <input type="radio" name="crust" value="none"/> <br /> <input type="button" value="submit" onClick="displayOrder()" /> </form> Thanks a lot for the help Hi, I have a check-box in a form Code: <input name="agreea1" type="checkbox" value="true" checked="checked" /> I expect most people to agree to pay a membership fee and leave it checked. I validate the check on submit like this Code: if(frm4.agreea1.checked) {subs1=12.5; alert ("Thank you " + name1 + " for paying your membership");} else {subs1=0; alert (name1 +" Please make sure you pay your membership by another method."+'\n' +"You will not be admitted to camp without paying.");};
The check-box appears checked when I test locally, but appears unchecked when on the server. I dont refer to the check-box name anywhere else in my code or on the form What is happening. I have a JS that works, but only on the first Dynamically created check box and once the colour has chaned it wont change back when clicked again Please inspect my code to see exactly what I mean ... Code: <?php
function create_time_range($start, $end, $by='30 mins') {
$start_time = strtotime($start);
$end_time = strtotime($end);
$times = array();
for ( ;$start_time < $end_time; ) {
$times[] = $start_time;
$start_time = strtotime('+'.$by, $start_time);
}
$times[] = $start_time;
return $times;
}
// create array of time ranges
$times = create_time_range('0:00', '23:00', '1 hour');
// $times = create_time_range('9:30am', '5:30pm', '30 mins');
// format the unix timestamps
foreach ($times as $key => $time) {
$times[$key] = date('H:i', $time);
}
//print '<pre>'. print_r($times, true).'</pre>';
$days = array(
'Sunday',
'Monday',
'Tuesday',
'Wednesday',
'Thursday',
'Friday',
'Saturday',
);
$s_day = array(
'Sun',
'Mon',
'Tue',
'Wed',
'Thu',
'Fri',
'Sat',
);
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<style type="text/css">
legend{
font-family:Arial, Helvetica, sans-serif;
font-size:12px;
}
fieldset{
width:300px;
height:auto;
}
label{
font-family:Arial, Helvetica, sans-serif;
font-size:9px;
display:inline-table;
width:50px;
}
.short{
font-family:Arial, Helvetica, sans-serif;
font-size:9px;
display:inline-table;
width:15px;
}
.on_lbl{
font-family:Arial, Helvetica, sans-serif;
font-size:9px;
display:inline-table;
width:100px;
}
#myfield{
display: none;
}
#Toptions{
}
</style>
<script type="text/javascript">
function disshow(num)
{
var dayname = new Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday');
document.getElementById('legend').innerHTML = dayname[num];
document.getElementById('myfield').style.display = 'block';
}
/* Color Changes*/
function changeColour () {
if (document.getElementById('Toptions').style.backgroundColor=='green') {
document.getElementById('Toptions').style.backgroundColor='red'
}
else if (document.getElementById('Toptions').style.backgroundColor=='red') {
document.getElementById('Toptions').style.backgroundColor=='green'
}
}
</script>
</head>
<body>
<?php
// Days Active
echo("<form method=\"POST\">");
echo("<fieldset><legend>Days Active</legend>");
for ($i=0; $i<sizeof($days); $i++){
echo("<div class=\"on_lbl\">
<input type=\"checkbox\" name=\"dayOption\" value=\"" . $i . "\" id=\"option" . $i . "\">
<label for=\"option" . $i . "\">" . $days[$i] . "</label>
</div>");
}
echo ("</fieldset>");
// Select Days for Schedule
echo ("<fieldset><legend>Schedule Times</legend>");
for ($i=0; $i<sizeof($s_day); $i++)
{
echo("<input type=\"radio\" name=\"sdayOption\" value=\"" . $i . "\" id=\"opt" . $i . " \" onclick=\"disshow('$i')\">
<label class=\"short\">$s_day[$i]</label>");
}
echo("</fieldset>");
// Day: Schedule show Hours
echo "<div id=\"myfield\">";
echo("<fieldset><legend id=\"legend\">day</legend>");
for ($i=0; $i<sizeof($times); $i++)
{
echo("<span id=\"Toptions\" style=\"background-color:green;\"><input type=\"checkbox\" name=\"timeOption\" checked=\"checked\" value=\"" . $i . "\" id=\"Toption" . $i . "\" onClick=\"changeColour()\">
<label for=\"timeOption" . $i . "\">" . $times[$i] . "</label></span>");
}
//<input type=\"submit\" value=\"Save\">
echo ("</fieldset>"); echo ("<input type=\"submit\" value=\"Update\"><input type=\"submit\" value=\"Check All\"></form>");
echo "</div>";
?>
</body>
</html>
I am at my wits end and have spent over 2 hours looking into this... I use a JavaScript form field validator; I have some multi-select checkboxes on a form (check as many that apply). For instance, if you tick the box that says you have a car, it requires you to list list the "Model" in another form field. This works: Code: function formCheckCar(formobj)
{
if ( formobj.elements['Car].checked && formobj.elements['Model'].value == '' )
{
alert('Error: Provide model of your car');
return false;
}
return true;
}
How would I modify this if I wanted the alert triggered if the checkbox was NOT ticked? I took a few stabs at it, tired this: Code: if ( formobj.elements['Car].unchecked and Code: if ( formobj.elements['Car].!=checked No dice. Thank you. |
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