Resetting Radio Buttons - javascript

Here is a fiddle containing my code - http://jsfiddle.net/jamiepollard28/sDLV4/8/
I am trying to make my code reset the radio buttons only when the user clicks cancel on the alert box of validation for the radio buttons.
When you click submt containing the required data with a radio button selected a alert box will come up confirming or rejecting the choice, when i click cancel on that alert box i want the radio button selection to reset.
Below is my code.
<html>
<head>
<title>Exam entry</title>
<script language="javascript" type="text/javascript">
window.onload=function(){
window.validateForm=function() {
var result = true;
var msg = "";
var focusname="";
if (document.ExamEntry.name.value == "") {
msg += "You must enter your name \n";
focusname="name";
//document.ExamEntry.name.focus();
document.getElementById('name1').style.color = "red";
//result = false;
}
if (document.ExamEntry.subject.value == "") {
msg += "You must enter the subject \n";
// document.ExamEntry.subject.focus();
if (focusname=="")
{
focusname="subject";
}
document.getElementById('subject1').style.color = "red";
//result = false;
}
var Number = document.ExamEntry.Exam_Number.value
if (Number == "") {
msg += "You must enter the exam Number \n";
//document.ExamEntry.Exam_Number.focus();
if (focusname=="")
{
focusname="Exam_Number";
}
document.getElementById('Exam_Number1').style.color = "red";
//result = false;
}else if (Number.length != 4) {
msg += "You must enter at least Four Numbers in the Exam Number \n";
if (focusname=="")
{
focusname="Exam_Number";
}
//document.ExamEntry.Exam_Number.focus();
document.getElementById('Exam_Number1').style.color = "red";
//result = false;
}
else if (isNaN(Number)) {
msg += "You must enter at least four numeric characters in the Exam Number feild \n";
if (focusname=="")
{
focusname="Exam_Number";
}
// document.ExamEntry.Exam_Number.focus();
document.getElementById('Exam_Number1').style.color = "red";
//result = false;
}
var valchecked = '';
var len = document.getElementsByName('examtype').length;
for (i = 0; i < len; i++) {
if ( document.ExamEntry.examtype[i].checked ) {
valchecked = document.ExamEntry.examtype[i].value;
break;
}
}
if (valchecked == '') {
msg += "Select Exam Type";
document.getElementById('Exam_Type').style.color = "red";
if (focusname=="")
{
focusname="examtype_GCSE";
}
}
if (msg != ""){
alert(msg)
document.getElementById(focusname).focus();
return false;
}else{
return confirm('You have chosen ' + valchecked + ' is this correct?');
}
}
}//]]>
</script>
</head>
<body>
<h1>Exam Entry Form</h1>
<form name="ExamEntry" method="post" action="success.html">
<table width="50%" border="0">
<tr>
<td id="name1">Name</td>
<td><input type="text" name="name" id="name" /></td>
</tr>
<tr>
<td id="subject1">Subject</td>
<td><input type="text" name="subject" id="subject"/></td>
</tr>
<tr>
<td id="Exam_Number1">Exam Number</td>
<td><input type="text" name="Exam_Number" id="Exam_Number" ><font size="3">(Maximum characters: 4)</font> </td>
</tr>
<tr>
<table><form action="">
<td id="Exam_Type">Exam Type</td>
<tr><td><input type="radio" id="examtype_GCSE" name="examtype" value="GCSE" /> : GCSE<br /></tr>
<tr><td><input type="radio" id="examtype_AS" name="examtype" value="AS"/> : AS<br /></tr>
<tr><td><input type="radio" id="examtype_A2" name="examtype" value="A2" /> : A2<br /></tr>
<tr><td><input type="submit" name="Submit" value="Submit" onclick="return validateForm();" /></td>
<td><input type="reset" name="Reset" value="Reset" /></td>
</tr>
</table>
</form>
</body>
</html>

You are simply returning the users choice, you need to first check it, if it is true return true for form submission else reset radio and return false, as follows: FIDDLE
var ch= confirm('You have chosen ' + valchecked + ' is this correct?');
if(!ch){
document.getElementById('examtype_'+valchecked).checked= false;
return false; }
else
return true;
}

With an if loop you can solve the issue
try following code
if(confirm('You have chosen ' + valchecked + ' is this correct?')){
return true;
}
else{
document.getElementById('examtype_'+valchecked).checked= false;
return false;
}

Related

Why I cannot validate User ID?

Here I tried to validate the User Id using JavaScript for a form. But I could not get the expected message. You can see my code below the description. can you help me to find the wrong that I have done?
<html>
<head>
<script>
function formValidation(uid) {
var numbers = /^[0-9]/;
if (uid.value == "") {
alert('Empty values are not allowed.');
return false;
}
else if (numbers.test(uid.value) == false) {
alert('Please input numbers only');
return false;
}
else if (userid_validation(uid, 5, 12) == false) {
return false;
}
else {
return true;
}
}
function userid_validation(uid, mx, my) {
var uid_len = uid.value.length;
if (uid_len == 0 || uid_len >= my || uid_len < mx) {
alert("length be between " + mx + " to " + my);
return false;
}
else {
return true;
}
}
</script>
</head>
<body>
<form name="form1" onsubmit="return formValidation(this)">
<table>
<tr>
<td>
*Enter valid ID :
</td>
<td>
<input type="text" name="userid"></input>
</td>
</tr>
<tr>
<td>
<input type="submit" name="submit" value="Submit" />
</td>
</tr>
</table>
</body>
</form>
</html>
Your uid OBJECT is equal to the form element. To get the input value you need to assign an id for it. and also the RegEx for numbers /^[0-9]/ main that any input starting with number it will return true for (12ABCD). To get only numbers use /^\d+$/ or /^[0-9]+/.
<script>
function formValidation(uid) {
var numbers = /^[0-9]+$/;
if (uid.userid.value == "") {
alert('Empty values are not allowed.');
return false;
}
else if (numbers.test(uid.userid.value) == false) {
alert('Please input numbers only');
return false;
}
return (userid_validation(uid, 5, 12));
}
function userid_validation(uid, mx, my) {
var uid_len = uid.userid.value.length;
if (uid_len >= my || uid_len < mx) {
alert("length be between " + mx + " to " + my);
return false;
}
return true;
}
</script>
I add the id="userid" in input tag.
<form name="form1" onsubmit="return formValidation(this)">
<table>
<tr>
<td>
*Enter valid ID :
</td>
<td>
<input type="text" name="userid" id="userid"></input>
</td>
</tr>
<tr>
<td>
<input type="submit" name="submit" value="Submit" />
</td>
</tr>
</table>
</form>

Radio button validation (alert box) confirmation and rejection

I'm working on a HTML document which is an exam submission form. I've completed almost all of the set tasks however, I'm having trouble validating radio buttons. I've searched on stackoverflow however, the answers do not meet the criteria of the question. My completed code is shown below.
I'm having trouble with the bold part of this task:
Add a set of radio buttons to the form to accept a level of entry such as GCSE, AS or A2. Write a function that displays the level of entry to the user in an alert box so that the level can be confirmed or rejected.
Below is the code working, excluding the validation of the radio buttons. Seperatley, I have the code which doesn't work when implemented into the function validateForm().
<html>
<head>
<title>Exam entry</title>
<script language="javascript" type="text/javascript">
function validateForm() {
var result = true;
var msg = "";
if (document.ExamEntry.name.value == "") {
msg += "You must enter your name \n";
document.ExamEntry.name.focus();
document.getElementById('name').style.color = "red";
result = false;
}
if (document.ExamEntry.subject.value == "") {
msg += "You must enter the subject \n";
document.ExamEntry.subject.focus();
document.getElementById('subject').style.color = "red";
result = false;
}
if (document.ExamEntry.examno.value == "") {
msg += "You must enter your Examination Number \n";
document.ExamEntry.examno.focus();
document.getElementById('examinationno').style.color = "red";
result = false;
}
if (document.ExamEntry.examno.value.length!== 4) {
msg+="Your Examination Number should be 4 digits.\n";
document.ExamEntry.examno.focus();
document.getElementById('examinationno').style.color="red";
result = false;
}
if(msg==""){
return result;
}
{
alert(msg)
return result;
}
}
</script>
</head>
<body>
<h1>Exam Entry Form</h1>
<form name="ExamEntry" method="post" action="success.html">
<table width="50%" border="0">
<tr></tr>
<tr>
<td id="name">Name</td>
<td>
<input type="text" name="name" />
</td>
</tr>
<tr>
<td id="subject">Subject</td>
<td>
<input type="text" name="subject" />
</td>
</tr>
<tr>
<td id="examinationno">Examination Number</td>
<td>
<input type="text" name="examno" />
</td>
</tr>
<tr>
<td>
<input type="radio" name="examtype" value="GCSE" />GCSE</td>
</tr>
<tr>
<td>
<input type="radio" name="examtype" value="AS" />AS</td>
</tr>
<tr>
<td>
<input type="radio" name="examtype" value="A2" />A2</td>
</tr>
<tr>
<td>
<input type="submit" name="Submit" value="Submit" onClick="return validateForm();" />
</td>
<td>
<input type="reset" name="Reset" value="Reset" />
</td>
</tr>
</table>
</form>
Based on the current code, why won't the following validate when added into the function?:
if(document.getElementById('GCSE').checked)
{examtype = "GCSE";
}
if(document.getElementById('AS').checked)
{examtype = "AS";
}
if(document.getElementById('A2').checked)
{examtype = "A2";
}
if(confirm("You have selected"+examtype+.Continue?")){
if(msg==""){
return result;
}
{
alert(msg)
return result;
}
}
else{
alert("Action cancelled");
return false;
}
// Retrieving the checked radio button value
function getRadioValue (frmName, rbGroupName)
{
var radios = document[frmName].elements[rbGroupName];
for (var i=0; i <radios.length; i++)
{
if (radios[i].checked)
{
return radios[i].value;
}
}
return false;
}
Call the getRadioValue() inside validateForm()
// examtype gets false or GCSE or AS or A2
var examtype = getRadioValue ("ExamEntry", "examtype");
"Continue" is a keyword. So you have to wrap it in apostrophes("). I could not get the structure of if-statements, I made some changes. I hope this is what you are looking for..
if(confirm("You have selected"+examtype+". Continue?")){
if(msg==""){
alert(msg);
return result;
}
else{
alert("Action cancelled");
return false;
}
}

Confirmation of radio buttons

I have all ready inserted the validation for the radio button and now all i need is to have a alert box to come up before the code proceeds asking "Are you sure you want to pick 'x'" when x would be the level selected. And if cancel is pressed it returns to the webpage.
Thank you are here is my code below.
<html>
<head>
<title>Exam entry</title>
<script language="javascript" type="text/javascript">
function validateForm() {
var result = true;
var msg = "";
if (document.ExamEntry.name.value == "") {
msg += "You must enter your name \n";
document.ExamEntry.name.focus();
document.getElementById('name').style.color = "red";
result = false;
}
if (document.ExamEntry.number.value == "") {
msg += "You must enter a exam number \n";
document.ExamEntry.number.focus();
document.getElementById('number').style.color = "red";
result = false;
}
if (document.ExamEntry.subject.value == "") {
msg += "You must enter the subject \n";
document.ExamEntry.subject.focus();
document.getElementById('subject').style.color = "red";
result = false;
}
if ((document.ExamEntry.level[0].checked == false) && (document.ExamEntry.level[1].checked == false) && (document.ExamEntry.level[2].checked == false)) {
msg += "You mus select the level entered \n";
result = false;
}
}
function CheckField(obj) {
if (obj.value.length < '4') {
alert('Name field must 4 character long');
obj.focus();
}
}
</script>
</head>
<body>
<h1>Exam Entry Form</h1>
<form name="ExamEntry" method="post" action="success.html">
<table width="50%" border="0">
<tr>
<td id="name">Name</td>
<td><input type="text" name="name" /></td>
</tr>
<tr>
<td id="number">Examination Number</td>
<td><input type="text" name="number" maxlength="4" onblur="CheckField(this)"/></td>
</tr>
<tr>
<td id="subject">Subject</td>
<td><input type="text" name="subject" /></td>
</tr>
<tr>
<input type="radio" name="level">GCSE
<input type="radio" name="level">AS
<input type="radio" name="level">A2
<tr>
<td><input type="submit" name="Submit" value="Submit" onclick="return validateForm();" /> </td>
<td><input type="reset" name="Reset" value="Reset" /></td>
</tr>
</table>
</form>
</body>
</html>
Hope this helps to get along.
<!DOCTYPE html>
<html>
<head>
<title>Exam entry</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript">
function validateForm() {
var result = true;
var msg = "";
var objx;
// test for empty inputs
objx = document.getElementById("subjectInput");
if (objx.value.length == 0) {
msg += "You must enter the subject \n";
objx.focus();
document.getElementById('subject').style.color = "red";
result = false;
}
objx = document.getElementById("numberInput");
if (objx.value.length == 0) {
msg += "You must enter a exam number \n";
objx.focus();
document.getElementById('number').style.color = "red";
result = false;
}
objx = document.getElementById("nameInput");
if (objx.value.length == 0) {
msg += "You must enter your name \n";
objx.focus();
document.getElementById('name').style.color = "red";
result = false;
}
// checked level is needed below for confirmation
var objx = document.ExamEntry;
var checkedLevel = "";
if (objx.level[0].checked) {
checkedLevel = objx.level[0].value;
}
else
if (objx.level[1].checked) {
checkedLevel = objx.level[1].value;
}
else
if (objx.level[2].checked) {
checkedLevel = objx.level[2].value;
}
if (checkedLevel.length == 0) {
msg += "You must select the level entered \n";
result = false;
}
if (result) {
// test for minimum length of name
objx = document.getElementById("nameInput");
if (objx.value.length < 4)
{
objx.focus();
document.getElementById('name').style.color = "red";
//alert('Name field must 4 character long');
msg += 'Name field must be 4 characters long'
result = false;
}
}
// confirm checked level
if (result) {
result = confirm("Are you sure you want to pick '" + checkedLevel + "' ?");
}
else {
alert(msg);
}
return result;
}
</script>
</head>
<body>
<h1>Exam Entry Form</h1>
<form name="ExamEntry" method="post" onsubmit="return validateForm();" action="success.html">
<table width="50%" border="0">
<tr>
<td id="name">Name</td>
<td><input type="text" name="name" id="nameInput" /></td>
</tr>
<tr>
<td id="number">Examination Number</td>
<td><input type="text" name="number" id="numberInput" maxlength="4" /></td>
</tr>
<tr>
<td id="subject">Subject</td>
<td><input type="text" name="subject" id="subjectInput" /></td>
</tr>
<tr>
<input type="radio" name="level" value="GCSE">GCSE
<input type="radio" name="level" value="AS">AS
<input type="radio" name="level" value="A2">A2
<tr>
<td><input type="submit" name="Submit" value="Submit" /> </td>
<td><input type="reset" name="Reset" value="Reset" /></td>
</tr>
</table>
</form>
</body>
</html>

Javascript - How to call a second function [closed]

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I have created two submit buttons, however I want the functions to run one after another.
When submit button clicked
run function validateBoxes
when finished
run function validateBooking
I have pasted my code below. Newbie so would really appreciate the help. Thank you.
<html>
<head>
<title>Jet2it Booking Service</title>
<script language="javascript" type="text/javascript">
function validateBoxes() {
var result = true;
var msg = "";
if (document.Holiday.firstname.value == "") {
msg += "You must enter your firstname \n";
document.Holiday.firstname.focus();
document.getElementById('firstname').style.color = "red";
result = false;
}
if (document.Holiday.secondname.value == "") {
msg += "You must enter your secondname \n";
document.Holiday.secondname.focus();
document.getElementById('secondname').style.color = "red";
result = false;
}
if (msg == "") {
return result;
}
{
alert(msg)
return result;
}
}
function validateBooking() {
var result = true;
var msg = "";
var booking = "";
if (Holiday.bookings[0].checked == true) {
booking = "Italy";
}
if (Holiday.bookings[1].checked == true) {
booking = "Malta";
}
if (Holiday.bookings[1].checked == true) {
booking = "Portugal";
}
if (confirm("You have selected " + booking + ". Continue?")) {
if (msg == "") {
return result;
}
{
alert(msg)
return result;
}
}
else {
alert("booking Error");
return false;
}
}
</script>
</head>
<body>
<form name="Holiday" method="post" action="confirmed.html">
<table width="50%" border="0">
<tr>
<td id="firstname">First firstname</td>
<td><input type="text" name="firstname" /></td>
</tr>
<tr>
<td id="secondname">Second name</td>
<td><input type="text" name="secondname" /></td>
</tr>
<tr>
<td><label>
<input type="radio" name="bookings" value="Italy"/>
Italy</label></td>
</tr>
<tr>
<td><label>
<input type="radio" name="bookings" value="Malta"/>
Malta</label></td>
</tr>
<tr>
<td><label>
<input type="radio" name="bookings" value="Portugal"/>
Portugal</label></td>
</tr>
<tr>
<td><input type="submit" name="Submit_firstname_etc"
value="Submit_firstname_etc" onClick="return validateBoxes();" /></td>
<td><input type="reset" name="Reset" value="Reset" /></td>
</tr>
<tr>
<td><input type="submit" name="Submit_Destination"
value="Submit_Destination" onClick="return validateBooking();" /></td>
<td><input type="reset" name="Reset" value="Reset" /></td>
</tr>
</table>
</form>
</body>
</html>
Create a function that calls the two functions in the order you want, e.g. something like:
function validateBoth() {
var result = validateBoxes();
if (result) {
result = validateBooking();
}
return result;
}
...and then use that function wherever it is that you want both functions to be used.
Add a new function that encapsulates both functions and tie it to a button. If the function returns false, then it will not post to your confirmation page.
<script language="javascript" type="text/javascript">
function validateBoth() {
if (validateBoxes() && validateBooking()) {
return true;
} else {
return false;
}
}
</script>
Or you can get fancy with the code; this says the same thing as the previous code block. If both functions return true as a result, then validateBoth will return true; otherwise, validateBoth will return false.
<script language="javascript" type="text/javascript">
function validateBoth() {
return (validateBoxes() && validateBooking());
}
</script>
Then, somewhere in your form, you tie the validateBoth function to your button's onClick function:
<input type="submit" name="One Button" onClick="return validateBoth();" />

I wish to make my code validate a field to make sure it is a number of four digits. How can I do this?

I am currently doing a GCSE course which allows me to ask for assistance from IT sources as long as I reference them in my investigation. I wish to make the following code validate that there is a number of four digits in the Examination Number entry field. I'm okay with simple validation but this is another step for me.
<head>
<title>Exam entry</title>
<script language="javascript" type="text/javascript">
function validateForm() {
var result = true;
var msg="";
if (document.ExamEntry.name.value=="") {
msg+="You must enter your name \n";
document.ExamEntry.name.focus();
document.getElementById('name').style.color="red";
result = false;
}
if (document.ExamEntry.subject.value=="") {
msg+="You must enter the subject \n";
document.ExamEntry.subject.focus();
document.getElementById('subject').style.color="red";
result = false;
}
if (document.ExamEntry.examnumber.value=="") {
msg+="You must enter your Examination Number \n";
document.ExamEntry.examnumber.focus();
document.getElementById('examnumber').style.color="red";
result = false;
}
var checked = null;
var inputs = document.getElementsByName('examtype');
for (var i = 0; i < inputs.length; i++) {
if (inputs[i].checked) {
checked = inputs[i];
document.getElementById('examtype').style.color="red";
}
}
if(checked==null)
{
msg+="Please choose an option";
result = false;
}
else{
confirm("You have chosen "+checked.value+" is this the correct course?");
}
if(msg==""){
return result;
}
{
alert(msg)
return result;
}
}
</script>
</head>
<body>
<h1>Exam Entry Form</h1>
<form name="ExamEntry" method="post" action="success.html">
<table width="50%" border="0">
<tr>
<td id="name">Name</td>
<td><input type="text" name="name" /></td>
<tr>
<td id="subject">Subject</td>
<td><input type="text" name="subject" /></td>
</tr>
<tr>
<td id="examnumber">Examination Number</td>
<td><input type="text" name="examnumber" /></td>
</tr>
<tr>
<td><input type="radio" id="examtype" name="examtype" value="GCSE" /> : GCSE<br />
<td><input type="radio" id="examtype" name="examtype" value="A2" /> : A2<br />
<td><input type="radio" id="examtype" name="examtype" value="AS"/> : AS<br />
</tr>
<tr>
<td><input type="submit" name="Submit" value="Submit" onClick="return validateForm();" /> </td>
<td><input type="reset" name="Reset" value="Reset" /></td>
</tr>
</table>
</form>
</body>
Regarding checking if it is number, you can use some regex:
e.g.
var reg = /^\d{4}$/ig;
var regExRes = reg.exec(document.ExamEntry.examnumber.value);
if (document.ExamEntry.examnumber.value == "" || (regExRes == null || regExRes.length == 0)) {
msg += "You must enter your Examination Number \n";
document.ExamEntry.examnumber.focus();
document.getElementById('examnumber').style.color = "red";
result = false;
}
To avoid entering anything beside number, I would suggest you to use something like jquery pluging called masked input
EDIT:
line changed from var reg = /\d{4}/ig; to var reg = /^\d{4}$/ig;

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