How do I properly validate the form using input radios?

How do I properly validate the form using input radios? - javascript

I have a problem with validating the form in function validate() method. This line of code:
if(radios[i].value == "yes" && radios[i].checked == true) //DEBUG INFO: skips this step to else.
is being skipped because one or both of the conditions are false, but I'm not sure which one and as well as if the condition is proper to execute. I was thinking that radios[i].value == "yes" will correspond to the value attribute of that input radio button (In other words, the correct answer regarding that question).
When the submit button is clicked, I simply want javascript to tell me whether it's correct or not and to check if the radio button is checked.
Problem: I checked in the radio button, when submit button is clicked the alert for Please make sure you answer every question pops up 3 times and after that displays that I have the correct answer.
Here's the full code:
JavaScript:
// called when "Take Quiz" button is clicked
function takeQuiz()
{
// hide the intro
document.getElementById('intro').style.display = 'none';
// display the quiz
document.getElementById('message').style.overflow = 'auto';
document.getElementById('quiz').style.visibility = 'visible';
document.getElementById('gl_banner').style.display = 'block';
document.getElementById('gl_banner').style.visibility = 'visible';
}
//document.getElementById('submit').onclick = validateQuiz; //calls the function "validateQuiz" when submit button is clicked
// check for validation in the quiz
function validateQuiz()
{
var radios; // access elements by object name (DOM)
var i; // int variable
var right; // boolean variable to determine correct answer
radios = document.getElementById('question1').getElementsByTagName('input');
/*radios = document.getElementById('question2').getElementsByTagName('input');
radios = document.getElementById('question3').getElementsByTagName('input');
radios = document.getElementById('question4').getElementsByTagName('input');
radios = document.getElementById('question5').getElementsByTagName('input');*/
right = true;
// loop to check each radio button for validation
for(i = 0; i < radios.length; i++)
{
if(radios[i].value == "yes" && radios[i].checked == true) //DEBUG INFO: skips this step to else.
{
right = true;
}
else if(radios[i].checked == false)
{
right = false;
alert("Please check to make sure you have answered every question.");
}
}
if(right)
{
alert("You have answered correctly!");
}
else
{
alert("Wrong answer");
}
}
HTML Code:
<div id="message" style="overflow:hidden;"><div id="intro">Why not go ahead and take the quiz to test your knowledge based on what you've learned in Smartphone Photography.
There are only 5 questions surrounding the content of this site.
<br/>
<button id="takeQuiz" type="button" name="name" onclick="takeQuiz()" style="cursor:pointer;">Take Quiz!</button></div>
<div id="gl_banner" style="display:none; visibility:hidden;">Good Luck! :)</div>
<form id="quiz" action="#" method="post" style="visibility:hidden;" autocomplete="off">
<!--QUIZ-->
<h3>1. How many percent of modern camera phones use CMOS?</h3>
<div id="question1">
<input type="radio" name="question-1-answers" id="question-1-answers-A" value="A" />
<label for="question-1-answers-A">A) 20%</label>
<br/>
<input type="radio" name="question-1-answers" id="question-1-answers-B" value="B" />
<label for="question-1-answers-B">B) 80%</label>
<br/>
<input type="radio" name="question-1-answers" id="question-1-answers-C" value="C" />
<label for="question-1-answers-C">C) 50%</label>
<br/>
<input type="radio" name="question-1-answers" id="question-1-answers-D" value="yes" />
<label for="question-1-answers-D">D) 90%</label>
</div>

**Edited for a pure javascript solution.
I got the function to get the select value from this post.
I don't think you need to do a loop here, as you only actually need to check one value- the value of the checked radio.
At the moment your looping through all the radios, so you'll always get three wrong answers.
**Edited again to fix some code errors. I have tested the following, it is working for me.
function getRadioValue(name) {
var group = document.getElementsByName(name);
for (var i=0;i<group.length;i++) {
if (group[i].checked) {
return group[i].value;
}
}
return '';
}
document.getElementById('submit').onclick = validateQuiz; //calls the function "validateQuiz" when submit button is clicked
// check for validation in the quiz
function validateQuiz(){
right = true;
radio = getRadioValue("question-1-answers");
if(!radio.length) {
right = false;
alert("Please check to make sure you have answered every question.");
return;
}
if(radio == 'yes')
{
alert("You have answered correctly!");
}
else {
right = false;
alert("Wrong answer");
}
}

Related

checkbox onclick wont change checked via jscript

I have 3 checkboxes, i wish to be able to click the box and it tick on/off and via jscript change the value of the input for posting to state weather item is accepted or not on another page. However i have logical script but it wont work, theres no errors but the checkboxes wont click on/off they just click on and thats it.. and the value wont change either i dont understand why.
Could somebody look at this short code and tell me why.
Thank you.
<input type="checkbox" id="paypal" name="paypal1" value=" " onclick='chbxpp();' >
</input>
<label for="paypal" class="checkboxes" >Show PayPal Accepted</label>
<br>
<input type="checkbox" id="facebook" name="facebook" value=" " onclick='chbxfb(this);' >
</input>
<label for="facebook" class="checkboxes" >Show FaceBook Contact Details</label>
<br>
<input type="checkbox" id="twitter" name="twitter" value=" " onclick='chbxtw(this);' >
</input>
<label for="twitter" class="checkboxes" >Show Twitter Contact Details</label>
function chbxpp()
{
if(document.getElementById('paypal').checked === true) {
document.getElementById('paypal').checked = false;
document.getElementById('paypal').value='no';
var vv=document.getElementById('paypal').value;
console.log(vv);
}
if (document.getElementById('paypal').checked === false) {
document.getElementById('paypal').checked = true;
document.getElementById('paypal').value='yes';
var vv=document.getElementById('paypal').value;
console.log(vv);
}
}
function chbxfb(objfb)
{
var that = objfb;
(objfb);
if(document.getElementById(that.id).checked === true) {
document.getElementById(that.id).checked = false;
document.getElementById(that.id).value='no';
var vv=document.getElementById(that.id).value;
console.log(vv);
}
if (document.getElementById(that.id).checked === false) {
document.getElementById(that.id).checked = true;
document.getElementById(that.id).value='yes';
var vv=document.getElementById(that.id).value;
console.log(vv);
}
}
function chbxtw(objtw)
{
var that = objtw;
(objtw);
if(document.getElementById(that.id).checked === true) {
document.getElementById(that.id).checked = false;
document.getElementById(that.id).value='no';
var vv=document.getElementById(that.id).value;
console.log(vv);
}
if (document.getElementById(that.id).checked === false) {
document.getElementById(that.id).checked = true;
document.getElementById(that.id).value='yes';
var vv=document.getElementById(that.id).value;
console.log(vv);
}
}
The objpp was my attempt at another method but just does the same thing...
p.s if i just didnt use jscript and just had the html, would the value not be valid if the checkbox was not clicked or would the value still be sent...
iv just fond this..
How to change the value of a check box onClick using JQuery?
states that the value wont be sent if the box is unchecked... But then how do i know after post what has been clicked.... will i receieve a not isset($_POST['paypal']) or an empty($_POST['paypal'])

I imagine your checkboxes begin with no check inside them or .checked === false, but when you call your function chbxpp(), it looks to see if your .checked property === true and if so it sets it back to false. The click event already changes the checkbox's .checked property for you, no need to do it in your code.
//If the checkbox is checked, set it to not checked...???
//But the problem is, the click event just set the .checked property to true
//so setting it back to false makes it like it never happened.
if(document.getElementById('paypal').checked === true) {
//document.getElementById('paypal').checked = false; //This part is a no-no
document.getElementById('paypal').value='yes';
}else{
document.getElementById('paypal').value='no';
}

Adding to Ryan Wilson's answer, set your cbx's initial value to false. (Also check the format of the cbx - the closing tag.)
<input type="checkbox" id="paypal" name="paypal1" value="false" onchange="chbxpp();" />
function chbxpp() {
// the cbx starts false. when it is clicked for the first time it
// becomes true.
if (document.getElementById('paypal').checked) {
// you don't need this.
//document.getElementById('paypal').checked = true;
document.getElementById('paypal').value = 'yes';
var vv = document.getElementById('paypal').value;
console.log(vv);
} else {
// you also don't need this.
//document.getElementById('paypal').checked = false;
document.getElementById('paypal').value = 'no';
var vv = document.getElementById('paypal').value;
console.log(vv);
}
}

Validating a checkbox after already validating other sections of a form [duplicate]

I have a form with multiple checkboxes and I want to use JavaScript to make sure at least one is checked. This is what I have right now but no matter what is chosen an alert pops up.
JS (wrong)
function valthis(){
if (document.FC.c1.checked) {
alert ("thank you for checking a checkbox")
} else {
alert ("please check a checkbox")
}
}
HTML
<p>Please select at least one Checkbox</p>
<br>
<br>
<form name = "FC">
<input type = "checkbox" name = "c1" value = "c1"/> C1
<br>
<input type = "checkbox" name = "c1" value = "c2"/> C2
<br>
<input type = "checkbox" name = "c1" value = "c3"/> C3
<br>
<input type = "checkbox" name = "c1" value = "c4"/> C4
<br>
</form>
<br>
<br>
<input type = "button" value = "Edit and Report" onClick = "valthisform();">
So what I ended up doing in JS was this:
function valthisform(){
var chkd = document.FC.c1.checked || document.FC.c2.checked||document.FC.c3.checked|| document.FC.c4.checked
if (chkd == true){
} else {
alert ("please check a checkbox")
}
}
I decided to drop the "Thank you" part to fit in with the rest of the assignment. Thank you so much, every ones advice really helped out.

You should avoid having two checkboxes with the same name if you plan to reference them like document.FC.c1. If you have multiple checkboxes named c1 how will the browser know which you are referring to?
Here's a non-jQuery solution to check if any checkboxes on the page are checked.
var checkboxes = document.querySelectorAll('input[type="checkbox"]');
var checkedOne = Array.prototype.slice.call(checkboxes).some(x => x.checked);
You need the Array.prototype.slice.call part to convert the NodeList returned by document.querySelectorAll into an array that you can call some on.

This should work:
function valthisform()
{
var checkboxs=document.getElementsByName("c1");
var okay=false;
for(var i=0,l=checkboxs.length;i<l;i++)
{
if(checkboxs[i].checked)
{
okay=true;
break;
}
}
if(okay)alert("Thank you for checking a checkbox");
else alert("Please check a checkbox");
}
If you have a question about the code, just comment.
I use l=checkboxs.length to improve the performance. See http://www.erichynds.com/javascript/javascript-loop-performance-caching-the-length-property-of-an-array/

I would opt for a more functional approach. Since ES6 we have been given such nice tools to solve our problems, so why not use them.
Let's begin with giving the checkboxes a class so we can round them up very nicely.
I prefer to use a class instead of input[type="checkbox"] because now the solution is more generic and can be used also when you have more groups of checkboxes in your document.
HTML
<input type="checkbox" class="checkbox" value=ck1 /> ck1<br />
<input type="checkbox" class="checkbox" value=ck2 /> ck2<br />
JavaScript
function atLeastOneCheckboxIsChecked(){
const checkboxes = Array.from(document.querySelectorAll(".checkbox"));
return checkboxes.reduce((acc, curr) => acc || curr.checked, false);
}
When called, the function will return false if no checkbox has been checked and true if one or both is.
It works as follows, the reducer function has two arguments, the accumulator (acc) and the current value (curr). For every iteration over the array, the reducer will return true if either the accumulator or the current value is true.
the return value of the previous iteration is the accumulator of the current iteration, therefore, if it ever is true, it will stay true until the end.

Check this.
You can't access form inputs via their name. Use document.getElements methods instead.

Vanilla JS:
var checkboxes = document.getElementsByClassName('activityCheckbox'); // puts all your checkboxes in a variable
function activitiesReset() {
var checkboxesChecked = function () { // if a checkbox is checked, function ends and returns true. If all checkboxes have been iterated through (which means they are all unchecked), returns false.
for (var i = 0; i < checkboxes.length; i++) {
if (checkboxes[i].checked) {
return true;
}
}
return false;
}
error[2].style.display = 'none'; // an array item specific to my project - it's a red label which says 'Please check a checkbox!'. Here its display is set to none, so the initial non-error label is visible instead.
if (submitCounter > 0 && checkboxesChecked() === false) { // if a form submit has been attempted, and if all checkboxes are unchecked
error[2].style.display = 'block'; // red error label is now visible.
}
}
for (var i=0; i<checkboxes.length; i++) { // whenever a checkbox is checked or unchecked, activitiesReset runs.
checkboxes[i].addEventListener('change', activitiesReset);
}
Explanation:
Once a form submit has been attempted, this will update your checkbox section's label to notify the user to check a checkbox if he/she hasn't yet. If no checkboxes are checked, a hidden 'error' label is revealed prompting the user to 'Please check a checkbox!'. If the user checks at least one checkbox, the red label is instantaneously hidden again, revealing the original label. If the user again un-checks all checkboxes, the red label returns in real-time. This is made possible by JavaScript's onchange event (written as .addEventListener('change', function(){});

You can check that atleast one checkbox is checked or not using this simple code. You can also drop your message.
Reference Link
<label class="control-label col-sm-4">Check Box 2</label>
<input type="checkbox" name="checkbox2" id="checkbox2" value=ck1 /> ck1<br />
<input type="checkbox" name="checkbox2" id="checkbox2" value=ck2 /> ck2<br />
<script>
function checkFormData() {
if (!$('input[name=checkbox2]:checked').length > 0) {
document.getElementById("errMessage").innerHTML = "Check Box 2 can not be null";
return false;
}
alert("Success");
return true;
}
</script>

< script type = "text/javascript" src = "js/jquery-1.6.4.min.js" > < / script >
< script type = "text/javascript" >
function checkSelectedAtleastOne(clsName) {
if (selectedValue == "select")
return false;
var i = 0;
$("." + clsName).each(function () {
if ($(this).is(':checked')) {
i = 1;
}
});
if (i == 0) {
alert("Please select atleast one users");
return false;
} else if (i == 1) {
return true;
}
return true;
}
$(document).ready(function () {
$('#chkSearchAll').click(function () {
var checked = $(this).is(':checked');
$('.clsChkSearch').each(function () {
var checkBox = $(this);
if (checked) {
checkBox.prop('checked', true);
} else {
checkBox.prop('checked', false);
}
});
});
//for select and deselect 'select all' check box when clicking individual check boxes
$(".clsChkSearch").click(function () {
var i = 0;
$(".clsChkSearch").each(function () {
if ($(this).is(':checked')) {}
else {
i = 1; //unchecked
}
});
if (i == 0) {
$("#chkSearchAll").attr("checked", true)
} else if (i == 1) {
$("#chkSearchAll").attr("checked", false)
}
});
});
< / script >

Prevent user from deselecting last checked checkbox.
jQuery (original answer).
$('input[type="checkbox"][name="chkBx"]').on('change',function(){
var getArrVal = $('input[type="checkbox"][name="chkBx"]:checked').map(function(){
return this.value;
}).toArray();
if(getArrVal.length){
//execute the code
$('#msg').html(getArrVal.toString());
} else {
$(this).prop("checked",true);
$('#msg').html("At least one value must be checked!");
return false;
}
});
UPDATED ANSWER 2019-05-31
Plain JS
let i,
el = document.querySelectorAll('input[type="checkbox"][name="chkBx"]'),
msg = document.getElementById('msg'),
onChange = function(ev){
ev.preventDefault();
let _this = this,
arrVal = Array.prototype.slice.call(
document.querySelectorAll('input[type="checkbox"][name="chkBx"]:checked'))
.map(function(cur){return cur.value});
if(arrVal.length){
msg.innerHTML = JSON.stringify(arrVal);
} else {
_this.checked=true;
msg.innerHTML = "At least one value must be checked!";
}
};
for(i=el.length;i--;){el[i].addEventListener('change',onChange,false);}
<label><input type="checkbox" name="chkBx" value="value1" checked> Value1</label>
<label><input type="checkbox" name="chkBx" value="value2"> Value2</label>
<label><input type="checkbox" name="chkBx" value="value3"> Value3</label>
<div id="msg"></div>

$('input:checkbox[type=checkbox]').on('change',function(){
if($('input:checkbox[type=checkbox]').is(":checked") == true){
$('.removedisable').removeClass('disabled');
}else{
$('.removedisable').addClass('disabled');
});

if(($("#checkboxid1").is(":checked")) || ($("#checkboxid2").is(":checked"))
|| ($("#checkboxid3").is(":checked"))) {
//Your Code here
}
You can use this code to verify that checkbox is checked at least one.
Thanks!!

How to use if condition in document.getelementbyname in javascript

Here I am facing problem in if condition it validates for subject and not validate for medium field. Here checkbox is coming from mysql. But it gives source like this only. Here Know the problem is with if conditional only how to overcome this?can any figure out what is the problem in my code?what I have to do here.I hope everyone understand the question.I don't understand why the second if conditional statement is not working.
function check() {
//alert('done')
var chk = document.getElementsByName('subject[]');
var reg = document.getElementsByName('regional[]');
var len = chk.length;
var regl = reg.length;
//alert(len);
if (len) {
for (i = 0; i < len; i++) {
if (chk[i].checked) {
return true;
} else {
alert('please select the subject');
return false;
}
}
}
if (regl) {
for (i = 0; i < regl; i++) {
if (reg[i].checked) {
return true;
} else {
alert('please select the regional');
return false;
}
}
}
}
<form name="f1" action="" method="post">
Subject
<input type='checkbox' name='subject[]' value='science'>science<br/>
<input type='checkbox' name='subject[]' value='maths'>maths<br/>
Medium
<input type='checkbox' name='regional[]' value='Hindi'>Hindi<br/>
<input type='checkbox' name='regional[]' value='english'>english<br/>
<input type="submit" name="land" class="butt" value="SUBMIT" onClick="return check();">
</form>

Because if the first condition is getting false then it will stop executing the code because you have "return".
At a time both will not be validate as per you code.
First make all the subject checked and then try, you will get the second if will be working.

function check() {
var subjects = document.getElementsByName("subject[]"),
regionals = document.getElementsByName('regional[]'),
subjectSelected = false,
regionalSelected = false;
// check subject
for(var i=0;i<subjects.length;i++){
if(subjects[i].checked){subjectSelected = true;}
}
// check medium
for(var i=0;i<regionals.length;i++){
if(regionals[i].checked){regionalSelected = true;}
}
if(!subjectSelected || !regionalSelected){
if(!subjectSelected){ // subject not selected
alert("Please select a subject.");
}else{ // medium not selected
alert("Please select a regional.");
}
}
}
<form name="f1" action="" method="post">
Subject
<input type='checkbox' name='subject[]' value='science'>science<br/>
<input type='checkbox' name='subject[]' value='maths'>maths<br/>
Medium
<input type='checkbox' name='regional[]' value='Hindi'>Hindi<br/>
<input type='checkbox' name='regional[]' value='english'>english<br/>
<input type="submit" name="land" class="butt" value="SUBMIT" onClick="return check();">
</form>
the mistake you did very silly. whenever you will use the return key it will exit the function and won't process below or next codes. Moreover, I think you are trying to validate the form like if at least one subject and medium is selected the form is valid. Either you want to alert the user. The easy way to do that is first take two variable inside the function, one for subject another one for medium and set both of them to false, that means nothing is selected. Now run a loop and set the related variable true if the checkbox is checked, that means at least one is checked what you want. After two loops now write a if-else-then condition for below three states:
Both true -> at least one subject and medium is checked
one true, one false -> either subject or medium is not selected.
both false -> nothing selected.
if you are trying something else leave a comment and I will post the solution. besides, feel free to ask if you have further questions.

Javascript Validating in a loop

I have two radio buttons on the top (YES/NO) If yes the javascript function showhideform shows another text box(certificate). This form is in a loop as you see with all my outputs.If yes is chosen and loop is 1 everything works fine onsubmit. If Yes and I submit when loop is 2 it only validates certificate textbox 2 and forgets about certificate textbox 1. I need it to validate both if yes is chosen twice.
Radio Buttons:
<input
type="radio"
value="No"
name="abc_<cfoutput>#BAdd#</cfoutput>"
id="noabc_<cfoutput>#BAdd#</cfoutput>"
onchange="showhideForm_<cfoutput>#BAdd#</cfoutput>(this.value);"/>
<label for="noabc_<cfoutput>#BAdd#</cfoutput>">No</label>
<input
type="radio"
value="Yes"
name="abc_<cfoutput>#BAdd#</cfoutput>"
id="abc_<cfoutput>#BAdd#</cfoutput>"
required="yes"
onchange="showhideForm_<cfoutput>#BAdd#</cfoutput>(this.value);"/>
<label for="abc_<cfoutput>#BAdd#</cfoutput>">Yes</label>
Show / Hide Radio Buttons:
function showhideForm_<cfoutput>#BAdd#</cfoutput>(abc_<cfoutput>#BAdd#</cfoutput>) {
if (abc_<cfoutput>#BAdd#</cfoutput> == "Yes") {
document.getElementById("div1_<cfoutput>#BAdd#</cfoutput>").style.display = 'block';
document.getElementById("div2_<cfoutput>#BAdd#</cfoutput>").style.display = 'none';
}
else if (abc_<cfoutput>#BAdd#</cfoutput> == "No") {
document.getElementById("div2_<cfoutput>#BAdd#</cfoutput>").style.display = 'block';
document.getElementById("div1_<cfoutput>#BAdd#</cfoutput>").style.display = 'none';
}
}
Validating through loop:
function doSubmit(n) {
var QnoText = ['abc_<cfoutput>#BAdd#</cfoutput>']; // add IDs here for questions with optional text input
var ids = '';
flag = true;
for (i=0; i<QnoText.length; i++) {
CkStatus = document.getElementById(QnoText[i]).checked;
ids = QnoText[i]+'Certificate_<cfoutput>#BAdd#</cfoutput>' + n;
if (CkStatus && document.getElementById(ids).value == '') {
alert('Please enter certificate number ' + n + '.');
document.getElementById(ids).focus();
flag = false;
}
}
return flag;
}
Certificate textbox:
<input
type="text"
name="abc_<cfoutput>#BAdd#</cfoutput>Certificate_<cfoutput>#BAdd#</cfoutput>"
validateat="onSubmit"
validate="maxlength"
id="abc_<cfoutput>#BAdd#</cfoutput>Certificate_<cfoutput>#BAdd#</cfoutput>"
size="54"
maxlength="120"
value="">
submit button:
//return doSubmit(1);

It looks like the n is just a numbering/index to the id of the input textbox it is validating.
Looking at your code, CKStatus seems to me is a checkbox. If it is checked, it will validate the certificate input text box according to the parameter n.

After days of working on it I have finally figured it out!! I just wanted to say thanks to everyone that has helped and this is the code for anyone who was interested!
<script type="text/javascript">
function doSubmit() {
var count =<cfoutput>#BAdd#</cfoutput>;
flag = true;
for (i=1; i<=count; i++){
var ids = 'abc_'+i +'Certificate_'+i;
var Radio = 'abc_'+i
CkStatus = document.getElementById(Radio).checked;
if (CkStatus && document.getElementById(ids).value == '') {
alert('Please enter certificate number ' +i);
document.getElementById(ids).focus();
flag = false;
}
}
return flag;
}
</script>

comparing 2 input radio values

I'm simply trying to check if the user has chosen a gender, if not, an alert/code excecution should be shown, therefore, in my HTML I'm doing:
<label>Anrede:</label>
<input type="radio" id="sexMale" name="gender" value="Herr">
<label for="sexMale">Herr</label>
<input type="radio" id="sexFemale" name="gender" value="Frau">
<label for="sexFemale">Frau</label>
And in my JS:
var sexM = document.getElementById("sexMale").value;
var sexF = document.getElementById("sexFemale").value;
...
I'm confused, because both input fields return false if none has been checked.
If one has been checked, it spits out the correct chosen field,
but when I simply want to compare them like this, nothing happens:
if(sexM === false && sexF === false){
// Some Action here e.g:
document.getElementById('').innerHTML = "Please choose a gender";
}
Since this is a form with 20+ input fields (form to claim products) I can NOT go with things like:
input[type="radio"]:checked
I know it must be some kind of type/comparison problem. I've tried all options to compare these 2 values (e.g. === false, !== true etc) - none seems to work.
Need just a little hint, Thanks

Try $('input[name="gender"]:checked').length==0.
Check this http://jsfiddle.net/aamir/Wv68T/2/
and this demo http://jsfiddle.net/aamir/Wv68T/

I think you're looking to validate radio buttons. So you can try like this
var radios = document.getElementsByName("gender");
var formValid = false;
var i = 0;
while (!formValid && i < radios.length) {
if (radios[i].checked) {
formValid = true;
console.log(radios[i].value);
}
i++;
}
if (!formValid) document.getElementById('error').innerHTML = "Please choose a gender";
return formValid;
Fiddle Demo

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JavaScript is the programming language of the Web.

How do I properly validate the form using input radios? - javascript

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