How to check radio button is checked using JQuery?

Question

我在一组中有两个单选按钮，我想使用 JQuery 检查单选按钮是否被选中，如何？

Answer 1

Given a group of radio buttons:

<input type="radio" id="radio1" name="radioGroup" value="1">
<input type="radio" id="radio2" name="radioGroup" value="2">

You can test whether a specific one is checked using jQuery as follows:

if ($("#radio1").prop("checked")) {
   // do something
}

// OR
if ($("#radio1").is(":checked")) {
   // do something
}

// OR if you don't have ids set you can go by group name and value
// (basically you need a selector that lets you specify the particular input)
if ($("input[name='radioGroup'][value='1']").prop("checked"))

You can get the value of the currently checked one in the group as follows:

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

Answer 2

//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
  }
});

Answer 3

这是最佳做法

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

Answer 4

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
    }
});

Answer 5

jQuery 3.3.1

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

Answer 6

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)

Answer 7

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

Answer 8

Simply you can check the property.

if( $("input[name='radioButtonName']").prop('checked') ){
    //implement your logic
  }else{
    //do something else as radio not checked   
  }

Answer 9

Check this one out, too:

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