How to get value from radio button dynamically - ajax

Question

i am creating a form for searching a client, using either id or email both are set to be unique. Application made on Codeignitor.
I have created a form with two radio buttons, one for search with ID and another for search with mail+dob.
Depending on the radio button selected, corresponding input fields shown.
In controller, it choose the model function based on the radio button value.
This is I coded, i need to pass the value of radio button to Controller.php file
Form(only included the radio button)
$(document).ready(function() {
$("#usingdob").hide();
$("#usingmail").hide();
$("input:radio").click(function() {
if ($(this).val() == "id") {
$("#usingId").show();
$("#usingdob").hide();
$("#usingmail").hide();
} else {
$("#usingId").hide();
$("#usingdob").show();
$("#usingmail").show();
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="col-md-4">
<label class="radio-inline">
<input type="radio" name="optradio" value="id" checked>Using ID </label></div>
<div class="col-md-4">
<label class="radio-inline">
<input type="radio" name="optradio" value="mail">Using DOB</label>
</div>
I expected to get the radio button value correctlyenter image description here

Answer 1

JS:
$('input[name="optradio"]').click(function(){
var optradio = $(this).val();
//or
var optradio = $("input[name='optradio']:checked").val();
if(optradio == 'id'){
//do your hide/show stuff
}else{
//do your hide/show stuff
}
});
//on search button press call this function
function passToController(){
var optradio = $("input[name='optradio']:checked").val();
$.ajax({
beforeSend: function () {
},
complete: function () {
},
type: "POST",
url: "<?php echo site_url('controller/cmethod'); ?>",
data: ({optradio : optradio}),
success: function (data) {
}
});
}

Answer 2

Try this
<script type="text/javascript">
$( document ).ready(function() {
$("#usingdob, #usingmail").hide();
$('input[name="radio"]').click(function() {
if($(this).val() == "id") {
$("#usingId").show();
$("#usingdob, #usingmail").hide();
} else {
$("#usingId").hide();
$("#usingdob, #usingmail").show();
}
});
});
</script>

Answer 3

One thing I noticed is that you have 'mail' as a value in the DOB option. Another is that there seems to be 3 options and yet you only have 2 radios?
I adjusted the mail value to dob and created dummy divs to test the code. It seems to work.
$(document).ready(function() {
$("#usingdob").hide();
$("#usingmail").hide();
$("input:radio").click(function() {
console.log($(this).val());
if ($(this).val() == "id") {
$("#usingId").show();
$("#usingdob").hide();
$("#usingmail").hide();
} else {
$("#usingId").hide();
$("#usingdob").show();
$("#usingmail").show();
}
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="col-md-4">
<label class="radio-inline">
<input type="radio" name="optradio" value="id" checked>Using ID </label></div>
<div class="col-md-4">
<label class="radio-inline">
<input type="radio" name="optradio" value="dob">Using DOB</label>
</div>
<div id="usingId">
Using Id div
</div>
<div id="usingdob">
Using dob div
</div>
<div id="usingmail">
Using mail div
</div>
As far as passing the value to the controller goes, ideally the inputs should be in a form. When you submit the form, the selected value can be passed to the php.
<?php
if (isset($_POST['submit'])) {
if(isset($_POST['optradio']))
{
Radio selection is :".$_POST['optradio']; // Radio selection
}
?>

Answer 4

If you want to get currently checked radio button value Try below line which will return current radio button value
var radioValue = $("input[name='gender']:checked").val();
if(radioValue)
{
alert("Your are a - " + radioValue);
}