In this tutorial we will learn how to Get Checked Radio Button Value by Class in jQuery. jQuery val() method, class selector and :checked Selector can be used together to get the exact value of checked radio button.
Table of Contents
jQuery val() Method
jQuery val() Method sets or returns the value of the input HTML elements.
In this example val() method is used to get value of checked radio button.
jQuery Class Selector
jQuery Class Selector is a selector which selects all HTML elements with same defined class.
In this example class selector is used with checked selector to select radio button by it's class.
:checked Selector
:checked Selector is used to target the checked radio button or checkboxes.
In this example :checked Selector is used to select the radio button which is checked.
HTML Code
HTML Code is given below, in this code we have two radio buttons with two labels and a button tag.
<!DOCTYPE html>
<html>
<head>
<title>Get Checked Radio Button Value by Class in jQuery</title>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
</head>
<body>
<label for="black">Black</label>
<input class='color' id="black" type="radio" value='black' name="color">
<label for="white">White</label>
<input class='color' id="white" type="radio" value='white' name="color">
<button id='btn'>Get Radio Value</button>
<script src="script.js"></script>
</body>
</html>
JQuery Code
JQuery Code is given below, the code is executed whenever button is clicked. This is done using jQuery click() method.
Then val() method is used to get the value of checked radio button.
$('.color:checked') is a combination of class selector and checked selector which will only target checked radio button with specific class.
<script>
$(document).ready(function(){
$('#btn').click(function(){
var value = $('.color:checked').val();
alert(value);
});
});
</script>
Demo
Video Tutorial
Watch video tutorial on How To Get Checked Radio Button Value by Class in jQuery.