getting value of radio button in jquery code example

Example 1: jquery get value of radio input

$('input[name="name_of_your_radiobutton"]:checked').val();

Example 2: get value of checked radio button jquery

$('form input[type=radio]:checked').val();

Example 3: How can I know which radio button is selected via jQuery

if ($('input[name="radioName"]:checked', '#myForm').length) {
	//Yes, it's checked!
}