[javascript] How to check radio button is checked using JQuery?

I have two radio buttons in one group, I want to check the radio button is checked or not using JQuery, How ?

Check this one out, too:

$(document).ready(function() { 
  if($("input:radio[name='yourRadioGroupName'][value='yourvalue']").is(":checked")) { 
      //its checked 
  } 
});

This is best practice

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

Try this:

var count =0;

$('input[name="radioGroup"]').each(function(){
  if (this.checked)
    {
      count++;
    }
});

If any of radio button checked than you will get 1

Radio buttons are,

<input type="radio" id="radio_1" class="radioButtons" name="radioButton" value="1">
<input type="radio" id="radio_2" class="radioButtons" name="radioButton" value="2">

to check on click,

$('.radioButtons').click(function(){
    if($("#radio_1")[0].checked){
       //logic here
    }
});

jQuery 3.3.1

if (typeof $("input[name='yourRadioName']:checked").val() === "undefined") {
    alert('is not selected');
}else{
    alert('is selected');
}

//the following code checks if your radio button having name like 'yourRadioName' 
//is checked or not
$(document).ready(function() {
  if($("input:radio[name='yourRadioName']").is(":checked")) {
      //its checked
  }
});

Taking some answers one step further - if you do the following you can check if any element within the radio group has been checked:

if ($('input[name="yourRadioNames"]:checked').val()){ (checked) or if (!$('input[name="yourRadioNames"]:checked').val()){ (not checked)