I have multiple radio groups like so:
<input type="radio" name="sex" value="male">
<input type="radio" name="sex" value="female">
<input type="radio" name="length" value="tall">
<input type="radio" name="length" value="short">
And so on..
My goal is to find out all the sets of radio groups that are on the page. So in this case, it would return sex, length
So far I am able to get all of the input's, but I am not sure where to go from here.
var radio_groups = [];
$("input[type=radio]").each(function(e){
//get the name
var name = this.attr('name');
});
If all you want is an object that has the names as keys can do:
var radios ={};
$("input[type=radio]").each(function(e){
radios[this.name] = true;
});
console.dir(radios);
/* if want to convert to array */
var radioArray= Object.keys(radios);
DEMO
Use indexOf() to check whether you've already seen the name:
var radio_groups = [];
$("input[type=radio]").each(function(e) {
var name = $(this).attr('name');
if (radio_groups.indexOf(name) < 0)
radio_groups.push(name);
});
console.log(radio_groups);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<input type="radio" name="sex" value="male">
<input type="radio" name="sex" value="female">
<input type="radio" name="length" value="tall">
<input type="radio" name="length" value="short">
If you want to get the value of the checkboxes you might want to consider wrapping the radio's in a form tag. like so:
<form id="f1">
<input type="radio" name="sex" value="male">
<input type="radio" name="sex" value="female">
<input type="radio" name="length" value="tall">
<input type="radio" name="length" value="short">
</form>
Then you can get the value for each like so:
var lenghtVal = document.forms[0].length.value;
var sexVal = document.forms[0].sex.value;
Replace the index of the forms array according to your situation.
Your selector selects all input elements withe name attribute starting with group, it doesn't filter out unique names
If you want to print only different group names then
var group = {};
$('input[name=*][type="radio"]').each(function (index) {
var name = this.name;
var elemValue = $(this).val();
if (!group[name]) {
group[name] = true;
console.log(elemValue);
}
});
Try this:
http://jsfiddle.net/76bhs444/1/
hit f12 and view it in the console. This should be what your looking for.
// get all radio names
var radio_groups = $("input[type=radio]").map(function(e){
return $(this).attr('name');
}).get();
console.log(radio_groups);
// filter duplicates
radio_groups = $.grep(radio_groups, function(value, index) {
return $.inArray(value, radio_groups) === index;
});
console.log(radio_groups);
Related
I'm trying to change the URL when I select radio button.
I have found an answer that works for 'select' form elements, but if I apply it to my radio buttons it lists out all the options instead of the one that is selected
My JS
$('.unitfiltercontrol').change(function(){
var params =[];
$('.unitfiltercontrol').each(function(){
$this=$(this);
if(!$this.val()=='') params.push($this.data('param')+'='+encodeURIComponent( $this.val() ));
});
$('#urlDisplay').text(window.location.href+('?'+params.join('&'))); //print to div for testing
});
My HTML:
<form>
<input id="radio1" type="radio" value="1" name="foo" data-param="foo" class="unitfiltercontrol">
<input id="radio2" type="radio" value="2" name="foo" data-param="foo" class="unitfiltercontrol">
<input id="radio3" type="radio" value="1" name="bar" data-param="bar" class="unitfiltercontrol">
<input id="radio4" type="radio" value="2" name="bar" data-param="bar" class="unitfiltercontrol">
</form>
<div id="urlDisplay"></div>
So if I select radio1, instead of the URL being displayed as:
/?foo=1
I get:
/?foo=1&foo=2&bar=1&bar=2
How would I modify this to work with radio buttons?
Hi friend you can use if condition when pushing parameters to like below
$('.unitfiltercontrol').change(function(){
var params =[];
$('.unitfiltercontrol').each(function(){
$this=$(this);
if ($(this).prop("checked")) { //get the values of only checked radio buttons
if(!$this.val()=='') params.push($this.data('param')+'='+encodeURIComponent( $this.val() ));
}
});
$('#urlDisplay').text(window.location.href+('?'+params.join('&'))); //print to div for testing
});
Radio button in your case make single selection , so no need to loop each radio , just get in the change the value and data for current clicked , then create object using data-param as key , after that loop thorough keys and create and array of key + values as below ; snippet :
let values = {};
$('.unitfiltercontrol').change(function(e){
let data = $(this).data('param');
let value = this.value;
values[data] = value;
let params = [];
let keys = Object.keys(values);
for(inc = 0; inc < keys.length ; inc ++) {
let key = keys[inc];
params.push(key+'='+encodeURIComponent(values[key]))
}
$('#urlDisplay').text(window.location.href+('?'+params.join('&')));
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
My HTML:
<form>
<input id="radio1" type="radio" value="1" name="foo" data-param="foo" class="unitfiltercontrol">
<input id="radio2" type="radio" value="2" name="foo" data-param="foo" class="unitfiltercontrol">
<input id="radio3" type="radio" value="1" name="bar" data-param="bar" class="unitfiltercontrol">
<input id="radio4" type="radio" value="2" name="bar" data-param="bar" class="unitfiltercontrol">
</form>
<div id="urlDisplay"></div>
<div id="urlDisplay">
</div>
I want to get the selected value from a group of radio buttons.
Here's my HTML:
<div id="rates">
<input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate
<input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate
</div>
Here's my js:
var rates = document.getElementById('rates').value;
var rate_value;
if(rates =='Fixed Rate'){
rate_value = document.getElementById('r1').value;
}else if(rates =='Variable Rate'){
rate_value = document.getElementById('r2').value;
}else if(rates =='Multi Rate'){
rate_value = document.getElementById('r3').value;
}
document.getElementById('results').innerHTML = rate_value;
I keep getting undefined.
This works in IE9 and above and all other browsers.
document.querySelector('input[name="rate"]:checked').value;
var rates = document.getElementById('rates').value;
The rates element is a div, so it won't have a value. This is probably where the undefined is coming from.
The checked property will tell you whether the element is selected:
if (document.getElementById('r1').checked) {
rate_value = document.getElementById('r1').value;
}
Or
$("input[type='radio'][name='rate']:checked").val();
You can get the value by using the checked property.
var rates = document.getElementsByName('rate');
var rate_value;
for(var i = 0; i < rates.length; i++){
if(rates[i].checked){
rate_value = rates[i].value;
}
}
For you people living on the edge:
There is now something called a RadioNodeList and accessing it's value property will return the value of the currently checked input. This will remove the necessity of first filtering out the 'checked' input as we see in many of the posted answers.
Example Form
<form id="test">
<label><input type="radio" name="test" value="A"> A</label>
<label><input type="radio" name="test" value="B" checked> B</label>
<label><input type="radio" name="test" value="C"> C</label>
</form>
To retrieve the checked value, you could do something like this:
var form = document.getElementById("test");
alert(form.elements["test"].value);
The JSFiddle to prove it: http://jsfiddle.net/vjop5xtq/
Please note this was implemented in Firefox 33 (All other major browser seems to support it). Older browsers will require a polfyill for RadioNodeList for this to properly function
If you are using javascript without jQuery, you can use this command :
document.querySelector("input[type='radio'][name=rate]:checked").value;
The one worked for me is given below from api.jquery.com.
HTML
<input type="radio" name="option" value="o1">option1</input>
<input type="radio" name="option" value="o2">option2</input>
JavaScript
var selectedOption = $("input:radio[name=option]:checked").val()
The variable selectedOption will contain the value of the selected radio button (i.e) o1 or o2
Another (apparently older) option is to use the format:
"document.nameOfTheForm.nameOfTheInput.value;"
e.g. document.mainForm.rads.value;
document.mainForm.onclick = function(){
var radVal = document.mainForm.rads.value;
result.innerHTML = 'You selected: '+radVal;
}
<form id="mainForm" name="mainForm">
<input type="radio" name="rads" value="1" />
<input type="radio" name="rads" value="2" />
<input type="radio" name="rads" value="3" />
<input type="radio" name="rads" value="4" />
</form>
<span id="result"></span>
You can refer to the element by its name within a form. Your original HTML does not contain a form element though.
Fiddle here (works in Chrome and Firefox):
https://jsfiddle.net/Josh_Shields/23kg3tf4/1/
Use document.querySelector('input[type = radio]:checked').value; to get value of selected checkbox , you can use other attributes to get value like name = gender etc. please go through below snippet definitely it will helpful to you,
Solution
document.mainForm.onclick = function(){
var gender = document.querySelector('input[name = gender]:checked').value;
result.innerHTML = 'You Gender: '+gender;
}
<form id="mainForm" name="mainForm">
<input type="radio" name="gender" value="Male" checked/>Male
<input type="radio" name="gender" value="Female" />Female
<input type="radio" name="gender" value="Others" />Others
</form>
<span id="result"></span>
Thank-You
HTML CODE:
<input type="radio" name="rdoName" value="YES"/>
<input type="radio" name="rdoName" value="NO"/>
JQUERY CODE:
var value= $("input:radio[name=rdoName]:checked").val();
$("#btnSubmit").click(function(){
var value=$("input:radio[name=rdoName]:checked").val();
console.log(value);
alert(value);
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="radio" name="rdoName" value="YES"/> YES
<input type="radio" name="rdoName" value="NO"/> NO
<br/>
<input type="button"id="btnSubmit"value="Which one Selected"/>
You will get
value="YES" //if checked Radio Button with the value "YES"
value="NO" //if checked Radio Button with the value "NO"
Shortest
[...rates.children].find(c=>c.checked).value
let v= [...rates.children].find(c=>c.checked).value
console.log(v);
<div id="rates">
<input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate
<input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate
</div>
In Javascript we can get the values by using Id's "getElementById()" in the above code you posted has contain name not Id
so you to modify like this
if (document.getElementById('r1').checked) {
rate_value = document.getElementById('r1').value;
}
use this rate_value according to your code
A year or so has passed since the question was asked, but I thought a substantial improvement of the answers was possible. I find this the easiest and most versatile script, because it checks whether a button has been checked, and if so, what its value is:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Check radio checked and its value</title>
</head>
<body>
<form name="theFormName">
<input type="radio" name="theRadioGroupName" value="10">
<input type="radio" name="theRadioGroupName" value="20">
<input type="radio" name="theRadioGroupName" value="30">
<input type="radio" name="theRadioGroupName" value="40">
<input type="button" value="Check" onclick="getRadioValue('theRadioGroupName')">
</form>
<script>
function getRadioValue(groupName) {
var radios = theFormName.elements[groupName];
window.rdValue; // declares the global variable 'rdValue'
for (var i=0; i<radios.length; i++) {
var someRadio = radios[i];
if (someRadio.checked) {
rdValue = someRadio.value;
break;
}
else rdValue = 'noRadioChecked';
}
if (rdValue == '10') {
alert('10'); // or: console.log('10')
}
else if (rdValue == 'noRadioChecked') {
alert('no radio checked');
}
}
</script>
</body>
</html>
You can also call the function within another function, like this:
function doSomething() {
getRadioValue('theRadioGroupName');
if (rdValue == '10') {
// do something
}
else if (rdValue == 'noRadioChecked') {
// do something else
}
}
Assuming your form element is referred to by myForm variable below, and that your radio buttons share the name "my-radio-button-group-name", the following is pure JavaScript and standards compliant (although I have not checked it to be available everywhere):
myForm.elements.namedItem("my-radio-button-group-name").value
The above will yield the value of a checked (or selected, as it is also called) radio button element, if any, or null otherwise. The crux of the solution is the namedItem function which works with radio buttons specifically.
See HTMLFormElement.elements, HTMLFormControlsCollection.namedItem and especially RadioNodeList.value, as namedItem usually returns a RadioNodeList object.
(I use MDN because it allows one to track standards compliance, at least to a large degree, and because it is easier to comprehend than many WhatWG and W3C publications)
directly calling a radio button many times gives you the value of the FIRST button, not the CHECKED button. instead of looping thru radio buttons to see which one is checked, i prefer to call an onclick javascript function that sets a variable that can later be retrieved at will.
<input type="radio" onclick="handleClick(this)" name="reportContent" id="reportContent" value="/reportFleet.php" >
which calls:
var currentValue = 0;
function handleClick(myRadio) {
currentValue = myRadio.value;
document.getElementById("buttonSubmit").disabled = false;
}
additional advantage being that i can treat data and/or react to the checking of a button (in this case, enabling SUBMIT button).
You can also loop through the buttons with a forEach-loop on the elements
var elements = document.getElementsByName('radioButton');
var checkedButton;
console.log(elements);
elements.forEach(e => {
if (e.checked) {
//if radio button is checked, set sort style
checkedButton = e.value;
}
});
An improvement to the previous suggested functions:
function getRadioValue(groupName) {
var _result;
try {
var o_radio_group = document.getElementsByName(groupName);
for (var a = 0; a < o_radio_group.length; a++) {
if (o_radio_group[a].checked) {
_result = o_radio_group[a].value;
break;
}
}
} catch (e) { }
return _result;
}
My take on this problem with pure javascript is to find the checked node, find its value and pop it out from the array.
var Anodes = document.getElementsByName('A'),
AValue = Array.from(Anodes)
.filter(node => node.checked)
.map(node => node.value)
.pop();
console.log(AValue);
Note that I'm using arrow functions.
See this fiddle for a working example.
You can use .find() to select checked element:
var radio = Array.from(document.querySelectorAll('#rate input'))
var value = radio.length && radio.find(r => r.checked).value
Here is a solution putting the radio buttons in a constant and getting the selected value only when needed.
const rates = document.forms.rates.elements["rate"]
showRate()
function showRate(){
document.getElementById('results').innerHTML = rates.value
}
<form id="rates" onchange="showRate()">
<input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate
<input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate
</form>
<div id="results"></div>
If you are using jQuery:
$('input[name="rate"]:checked').val();
<form id="rates">
<input type="radio" name="rate" value="Fixed Rate"> Fixed
<input type="radio" name="rate" value="Variable Rate"> Variable
<input type="radio" name="rate" value="Multi Rate" checked> Multi
</form>
then...
var rate_value = rates.rate.value;
check value by ID:
var CheckedValues = ($("#r1").is(':checked')) ? 1 : 0;
I used the jQuery.click function to get the desired output:
$('input[name=rate]').click(function(){
console.log('Hey you clicked this: ' + this.value);
if(this.value == 'Fixed Rate'){
rate_value = $('#r1').value;
} else if(this.value =='Variable Rate'){
rate_value = $('#r2').value;
} else if(this.value =='Multi Rate'){
rate_value = $('#r3').value;
}
$('#results').innerHTML = rate_value;
});
Hope it helps.
If the buttons are in a form
var myform = new FormData(getformbywhatever);
myform.get("rate");
QuerySelector above is a better solution. However, this method is easy to understand, especially if you don't have a clue about CSS. Plus, input fields are quite likely to be in a form anyway.
Didn't check, there are other similar solutions, sorry for the repetition
var rates = document.getElementById('rates').value;
cannot get values of a radio button like that instead use
rate_value = document.getElementById('r1').value;
If you are using the JQuery, please use the bellow snippet for group of radio buttons.
var radioBtValue= $('input[type=radio][name=radiobt]:checked').val();
Simply use: document.querySelector('input[rate][checked]').value
https://codepen.io/anon/pen/YQxbZJ
The HTML
<div id="rates">
<input type="radio" id="x1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="x2" name="rate" value="Variable Rate"
checked="checked"> Variable Rate
<input type="radio" id="x3" name="rate" value="Multi Rate" > Multi Rate
</div>
<button id="rdio"> Check Radio </button>
<div id="check">
</div>
The JS
var x ,y;
var x = document.getElementById("check");
function boom()
{
if (document.getElementById("x1").checked)
y = document.getElementById("x1").value;
else if(document.getElementById("x2").checked)
y = document.getElementById("x2").value;
else if (document.getElementById("x3").checked)
y = document.getElementById("x3").value;
else
y = "kuch nhi;"
x.innerHTML = y;
}
var z = document.getElementById('rdio');
z.addEventListener("click", boom);`
var rates=document.getElementsByName("rate");
for (i = 0; i < rates.length; i++) {
if (rates[i].checked) {
console.log(rates[i].value);
rate=rates[i].value;
document.getElementById("rate").innerHTML = rate;
alert(rate);
}
}
<div id="rates">
<input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate
<input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate
</div>
</br>
<div id='rate'>
</div>
In php it's very easy
html page
Male<input type="radio" name="radio" value="male"><br/>
Female<input type="radio" name="radio" value="female"><br/>
Others<input type="radio" name="radio" value="other"><br/>
<input type="submit" value="submit">
Take value from form to php
$radio=$_POST['radio'];<br/>
use php if(isset($_POST['submit']))<br/>
{<br/>
echo "you selected".$radio."thank u";<br/>
}
I have a form with 36 questions and every question has 2 radio inputs for answers. The inputs are named i1-i36 and j1-j36. I am trying to count the checked radios into a variable for the ones named i and in another var the ones named j.
Tried this but it didn't work:
function test_it(entry) {
if (entry.value!=null && entry.value.length!=0) {
entry.value=""+ eval(entry.value);
}
computeForm(entry.form);
}
function computeForm(form) {
var rasa=0
var rasb=0
for (var count=1; count<37; count++)
{
if (form.i[count].checked){
var rasa=rasa+1;
}
}
for (var count=1; count<37; count++)
{
if (form.j[count].checked){
var rasb=rasb+1;
}
}
document.getElementById('showa').innerHTML = rasa;
document.getElementById('showb').innerHTML = rasb;
<body>
<form METHOD=POST>
Question 1
<input TYPE="radio" NAME="i1" VALUE="1">A1
<input TYPE="radio" NAME="j1" VALUE="0">A2
[...]
Question 36
<input TYPE="radio" NAME="i36" VALUE="1">A1
<input TYPE="radio" NAME="j36" VALUE="0">A2
</form>
</body>
// I want to get these:
<span id='showa'>Result a</span>
<span id='showb'>Result b</span>
In <input type="radio"> name attribute should be same like this
<input type="radio" name="gender" value="male"> Male<br>
<input type="radio" name="gender" value="female"> Female<br>
<input type="radio" name="gender" value="other"> Other
here name is gender
First change your name attribute like this
Question 1
<input TYPE="radio" NAME="j1" VALUE="1">A1
<input TYPE="radio" NAME="j1" VALUE="0">A2
and to check length use this
$(':radio[name="j1"]:checked).length;
Try to not use a for loop, but use highly order function like map, filter etc..
In this case substitute the for loop with:
var rasa = 0
var rasb = 0
form1.map((element, index) => {
if(element.checked)
rasa++
})
form2.map((element, index) => {
if(element.checked)
rasb++
})
Another thing, in every for loop you are re-declaring rasa and rasb and you don't need to. Also <form method="POST"> the property should be lowerCase.
you can do something like
radios = document.getElementByTagName('input');
a = 0
b = 0
for(let i = 0; i < radios.length; i++){
if(radios[i].name.contains('i')
a++;
else
b++;
}
I want to get the selected value from a group of radio buttons.
Here's my HTML:
<div id="rates">
<input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate
<input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate
</div>
Here's my js:
var rates = document.getElementById('rates').value;
var rate_value;
if(rates =='Fixed Rate'){
rate_value = document.getElementById('r1').value;
}else if(rates =='Variable Rate'){
rate_value = document.getElementById('r2').value;
}else if(rates =='Multi Rate'){
rate_value = document.getElementById('r3').value;
}
document.getElementById('results').innerHTML = rate_value;
I keep getting undefined.
This works in IE9 and above and all other browsers.
document.querySelector('input[name="rate"]:checked').value;
var rates = document.getElementById('rates').value;
The rates element is a div, so it won't have a value. This is probably where the undefined is coming from.
The checked property will tell you whether the element is selected:
if (document.getElementById('r1').checked) {
rate_value = document.getElementById('r1').value;
}
Or
$("input[type='radio'][name='rate']:checked").val();
You can get the value by using the checked property.
var rates = document.getElementsByName('rate');
var rate_value;
for(var i = 0; i < rates.length; i++){
if(rates[i].checked){
rate_value = rates[i].value;
}
}
For you people living on the edge:
There is now something called a RadioNodeList and accessing it's value property will return the value of the currently checked input. This will remove the necessity of first filtering out the 'checked' input as we see in many of the posted answers.
Example Form
<form id="test">
<label><input type="radio" name="test" value="A"> A</label>
<label><input type="radio" name="test" value="B" checked> B</label>
<label><input type="radio" name="test" value="C"> C</label>
</form>
To retrieve the checked value, you could do something like this:
var form = document.getElementById("test");
alert(form.elements["test"].value);
The JSFiddle to prove it: http://jsfiddle.net/vjop5xtq/
Please note this was implemented in Firefox 33 (All other major browser seems to support it). Older browsers will require a polfyill for RadioNodeList for this to properly function
If you are using javascript without jQuery, you can use this command :
document.querySelector("input[type='radio'][name=rate]:checked").value;
The one worked for me is given below from api.jquery.com.
HTML
<input type="radio" name="option" value="o1">option1</input>
<input type="radio" name="option" value="o2">option2</input>
JavaScript
var selectedOption = $("input:radio[name=option]:checked").val()
The variable selectedOption will contain the value of the selected radio button (i.e) o1 or o2
Another (apparently older) option is to use the format:
"document.nameOfTheForm.nameOfTheInput.value;"
e.g. document.mainForm.rads.value;
document.mainForm.onclick = function(){
var radVal = document.mainForm.rads.value;
result.innerHTML = 'You selected: '+radVal;
}
<form id="mainForm" name="mainForm">
<input type="radio" name="rads" value="1" />
<input type="radio" name="rads" value="2" />
<input type="radio" name="rads" value="3" />
<input type="radio" name="rads" value="4" />
</form>
<span id="result"></span>
You can refer to the element by its name within a form. Your original HTML does not contain a form element though.
Fiddle here (works in Chrome and Firefox):
https://jsfiddle.net/Josh_Shields/23kg3tf4/1/
Use document.querySelector('input[type = radio]:checked').value; to get value of selected checkbox , you can use other attributes to get value like name = gender etc. please go through below snippet definitely it will helpful to you,
Solution
document.mainForm.onclick = function(){
var gender = document.querySelector('input[name = gender]:checked').value;
result.innerHTML = 'You Gender: '+gender;
}
<form id="mainForm" name="mainForm">
<input type="radio" name="gender" value="Male" checked/>Male
<input type="radio" name="gender" value="Female" />Female
<input type="radio" name="gender" value="Others" />Others
</form>
<span id="result"></span>
Thank-You
HTML CODE:
<input type="radio" name="rdoName" value="YES"/>
<input type="radio" name="rdoName" value="NO"/>
JQUERY CODE:
var value= $("input:radio[name=rdoName]:checked").val();
$("#btnSubmit").click(function(){
var value=$("input:radio[name=rdoName]:checked").val();
console.log(value);
alert(value);
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="radio" name="rdoName" value="YES"/> YES
<input type="radio" name="rdoName" value="NO"/> NO
<br/>
<input type="button"id="btnSubmit"value="Which one Selected"/>
You will get
value="YES" //if checked Radio Button with the value "YES"
value="NO" //if checked Radio Button with the value "NO"
Shortest
[...rates.children].find(c=>c.checked).value
let v= [...rates.children].find(c=>c.checked).value
console.log(v);
<div id="rates">
<input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate
<input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate
</div>
In Javascript we can get the values by using Id's "getElementById()" in the above code you posted has contain name not Id
so you to modify like this
if (document.getElementById('r1').checked) {
rate_value = document.getElementById('r1').value;
}
use this rate_value according to your code
A year or so has passed since the question was asked, but I thought a substantial improvement of the answers was possible. I find this the easiest and most versatile script, because it checks whether a button has been checked, and if so, what its value is:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Check radio checked and its value</title>
</head>
<body>
<form name="theFormName">
<input type="radio" name="theRadioGroupName" value="10">
<input type="radio" name="theRadioGroupName" value="20">
<input type="radio" name="theRadioGroupName" value="30">
<input type="radio" name="theRadioGroupName" value="40">
<input type="button" value="Check" onclick="getRadioValue('theRadioGroupName')">
</form>
<script>
function getRadioValue(groupName) {
var radios = theFormName.elements[groupName];
window.rdValue; // declares the global variable 'rdValue'
for (var i=0; i<radios.length; i++) {
var someRadio = radios[i];
if (someRadio.checked) {
rdValue = someRadio.value;
break;
}
else rdValue = 'noRadioChecked';
}
if (rdValue == '10') {
alert('10'); // or: console.log('10')
}
else if (rdValue == 'noRadioChecked') {
alert('no radio checked');
}
}
</script>
</body>
</html>
You can also call the function within another function, like this:
function doSomething() {
getRadioValue('theRadioGroupName');
if (rdValue == '10') {
// do something
}
else if (rdValue == 'noRadioChecked') {
// do something else
}
}
Assuming your form element is referred to by myForm variable below, and that your radio buttons share the name "my-radio-button-group-name", the following is pure JavaScript and standards compliant (although I have not checked it to be available everywhere):
myForm.elements.namedItem("my-radio-button-group-name").value
The above will yield the value of a checked (or selected, as it is also called) radio button element, if any, or null otherwise. The crux of the solution is the namedItem function which works with radio buttons specifically.
See HTMLFormElement.elements, HTMLFormControlsCollection.namedItem and especially RadioNodeList.value, as namedItem usually returns a RadioNodeList object.
(I use MDN because it allows one to track standards compliance, at least to a large degree, and because it is easier to comprehend than many WhatWG and W3C publications)
directly calling a radio button many times gives you the value of the FIRST button, not the CHECKED button. instead of looping thru radio buttons to see which one is checked, i prefer to call an onclick javascript function that sets a variable that can later be retrieved at will.
<input type="radio" onclick="handleClick(this)" name="reportContent" id="reportContent" value="/reportFleet.php" >
which calls:
var currentValue = 0;
function handleClick(myRadio) {
currentValue = myRadio.value;
document.getElementById("buttonSubmit").disabled = false;
}
additional advantage being that i can treat data and/or react to the checking of a button (in this case, enabling SUBMIT button).
You can also loop through the buttons with a forEach-loop on the elements
var elements = document.getElementsByName('radioButton');
var checkedButton;
console.log(elements);
elements.forEach(e => {
if (e.checked) {
//if radio button is checked, set sort style
checkedButton = e.value;
}
});
An improvement to the previous suggested functions:
function getRadioValue(groupName) {
var _result;
try {
var o_radio_group = document.getElementsByName(groupName);
for (var a = 0; a < o_radio_group.length; a++) {
if (o_radio_group[a].checked) {
_result = o_radio_group[a].value;
break;
}
}
} catch (e) { }
return _result;
}
My take on this problem with pure javascript is to find the checked node, find its value and pop it out from the array.
var Anodes = document.getElementsByName('A'),
AValue = Array.from(Anodes)
.filter(node => node.checked)
.map(node => node.value)
.pop();
console.log(AValue);
Note that I'm using arrow functions.
See this fiddle for a working example.
You can use .find() to select checked element:
var radio = Array.from(document.querySelectorAll('#rate input'))
var value = radio.length && radio.find(r => r.checked).value
Here is a solution putting the radio buttons in a constant and getting the selected value only when needed.
const rates = document.forms.rates.elements["rate"]
showRate()
function showRate(){
document.getElementById('results').innerHTML = rates.value
}
<form id="rates" onchange="showRate()">
<input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate
<input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate
</form>
<div id="results"></div>
If you are using jQuery:
$('input[name="rate"]:checked').val();
<form id="rates">
<input type="radio" name="rate" value="Fixed Rate"> Fixed
<input type="radio" name="rate" value="Variable Rate"> Variable
<input type="radio" name="rate" value="Multi Rate" checked> Multi
</form>
then...
var rate_value = rates.rate.value;
check value by ID:
var CheckedValues = ($("#r1").is(':checked')) ? 1 : 0;
I used the jQuery.click function to get the desired output:
$('input[name=rate]').click(function(){
console.log('Hey you clicked this: ' + this.value);
if(this.value == 'Fixed Rate'){
rate_value = $('#r1').value;
} else if(this.value =='Variable Rate'){
rate_value = $('#r2').value;
} else if(this.value =='Multi Rate'){
rate_value = $('#r3').value;
}
$('#results').innerHTML = rate_value;
});
Hope it helps.
If the buttons are in a form
var myform = new FormData(getformbywhatever);
myform.get("rate");
QuerySelector above is a better solution. However, this method is easy to understand, especially if you don't have a clue about CSS. Plus, input fields are quite likely to be in a form anyway.
Didn't check, there are other similar solutions, sorry for the repetition
var rates = document.getElementById('rates').value;
cannot get values of a radio button like that instead use
rate_value = document.getElementById('r1').value;
If you are using the JQuery, please use the bellow snippet for group of radio buttons.
var radioBtValue= $('input[type=radio][name=radiobt]:checked').val();
Simply use: document.querySelector('input[rate][checked]').value
https://codepen.io/anon/pen/YQxbZJ
The HTML
<div id="rates">
<input type="radio" id="x1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="x2" name="rate" value="Variable Rate"
checked="checked"> Variable Rate
<input type="radio" id="x3" name="rate" value="Multi Rate" > Multi Rate
</div>
<button id="rdio"> Check Radio </button>
<div id="check">
</div>
The JS
var x ,y;
var x = document.getElementById("check");
function boom()
{
if (document.getElementById("x1").checked)
y = document.getElementById("x1").value;
else if(document.getElementById("x2").checked)
y = document.getElementById("x2").value;
else if (document.getElementById("x3").checked)
y = document.getElementById("x3").value;
else
y = "kuch nhi;"
x.innerHTML = y;
}
var z = document.getElementById('rdio');
z.addEventListener("click", boom);`
var rates=document.getElementsByName("rate");
for (i = 0; i < rates.length; i++) {
if (rates[i].checked) {
console.log(rates[i].value);
rate=rates[i].value;
document.getElementById("rate").innerHTML = rate;
alert(rate);
}
}
<div id="rates">
<input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate
<input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate
<input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate
</div>
</br>
<div id='rate'>
</div>
In php it's very easy
html page
Male<input type="radio" name="radio" value="male"><br/>
Female<input type="radio" name="radio" value="female"><br/>
Others<input type="radio" name="radio" value="other"><br/>
<input type="submit" value="submit">
Take value from form to php
$radio=$_POST['radio'];<br/>
use php if(isset($_POST['submit']))<br/>
{<br/>
echo "you selected".$radio."thank u";<br/>
}
i have 3 elemests of radio group.
How can i get the value of the radio element?
can i have same id for all 3 elements?
??<input type="radio" id="ans" name="ans" value="1" />
<input type="radio" id="ans" name="ans" value="0" />
how will i get the value of ans
Id's must be unique, you should have the radio buttons with the same name, and get its value iterating through them:
<input type="radio" name="ans" value="1" />
<input type="radio" name="ans" value="0" />
var elements = document.getElementsByName('ans'), //or document.forms['name'].ans
i, el;
for (i = 0; i < elements.length;i++) {
el = elements[i];
if (el.checked) {
alert(el.value);
break;
}
}
getElementsByName('ans'), or document.forms['name'].ans returns an array object, containing the elements with the name ans.
I do not recommend having the same id for all 3 elements. You do have to have the same name for each button in order for it to be part of the group. If you have the form its in, you can do this
var myForm = document.getElementById('myForm');
var radioVal = myForm.ans.value;
That will give you your value.