if (!$("#InvCopyRadio").prop("checked") && $("#InvCopyRadio").prop("checked"))
    // do something

<input type="radio" class="radioBtnClass" name="numbers" value="1" />1<br/>
<input type="radio" class="radioBtnClass" name="numbers" value="2" />2<br/>
<input type="radio" class="radioBtnClass" name="numbers" value="3" />3<br/>

这将返回选中的单选按钮值。

if($("input[type='radio'].radioBtnClass").is(':checked')) {
    var card_type = $("input[type='radio'].radioBtnClass:checked").val();
    alert(card_type);
}

更多细节请见我的博客:https://webexplorar.com/jquery-get-selected-radio-button-value/

我知道我这么晚才加入。但值得一提的是，它需要

<label class="custom-control-label" for="myRadioBtnName">Personal Radio Button</label>

然后我在js中检查了这个。可以是这样

$(document).ready(function () { 

$("#MyRadioBtnOuterDiv").click(function(){
    var radioValue = $("input[name=myRadioButtonNameAttr]:checked").val();
    if(radioValue === "myRadioBtnName"){
        $('#showMyRadioArea').show();
    }else if(radioValue === "yourRadioBtnName"){
        $('#showYourRadioArea').show();
    }
});
});

`

if (!$("#InvCopyRadio").prop("checked") && $("#InvCopyRadio").prop("checked"))
    // do something

请参阅下面的工作示例，其中包含与不同部分相关联的无线电组集合。您的命名方案很重要，但理想情况下，您应该尝试对输入使用一致的命名方案(特别是当它们位于像这里这样的部分时)。

$('#submit').click(function(){ var section = $('input:radio[name="sec_num"]:checked').val(); var question = $('input:radio[name="qst_num"]:checked').val(); var selectedVal = checkVal(section, question); $('#show_val_div').text(selectedVal); $('#show_val_div').show(); }); function checkVal(section, question) { var value = $('input:radio[name="sec'+section+'_r'+question+'"]:checked').val() || "Selection Not Made"; return value; } * { margin: 0; } div { margin-bottom: 20px; padding: 10px; } h5, label { display: inline-block; } .small { font-size: 12px; } .hide { display: none; } #formDiv { padding: 10px; border: 1px solid black; } .center { display:block; margin: 0 auto; text-align:center; } <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="center"> <div> <h4>Section 1</h4> <h5>First question text</h5> <label class="small"><input type="radio" name="sec1_r1" value="(1:1) YES"> YES</label> <label class="small"><input type="radio" name="sec1_r1" value="(1:1) NO"> NO</label> <br/> <h5>Second question text</h5> <label class="small"><input type="radio" name="sec1_r2" value="(1:2) YES"> YES</label> <label class="small"><input type="radio" name="sec1_r2" value="(1:2) NO"> NO</label> <br/> <h5>Third Question</h5> <label class="small"><input type="radio" name="sec1_r3" value="(1:3) YES"> YES</label> <label class="small"><input type="radio" name="sec1_r3" value="(1:3) NO"> NO</label> </div> <div> <h4>Section 2</h4> <h5>First question text</h5> <label class="small"><input type="radio" name="sec2_r1" value="(2:1) YES"> YES</label> <label class="small"><input type="radio" name="sec2_r1" value="(2:1) NO"> NO</label> <br/> <h5>Second question text</h5> <label class="small"><input type="radio" name="sec2_r2" value="(2:2) YES"> YES</label> <label class="small"><input type="radio" name="sec2_r2" value="(2:2) NO"> NO</label> <br/> <h5>Third Question</h5> <label class="small"><input type="radio" name="sec2_r3" value="(2:3) YES"> YES</label> <label class="small"><input type="radio" name="sec2_r3" value="(2:3) NO"> NO</label> </div> <div> <h4>Section 3</h4> <h5>First question text</h5> <label class="small"><input type="radio" name="sec3_r1" value="(3:1) YES"> YES</label> <label class="small"><input type="radio" name="sec3_r1" value="(3:1) NO"> NO</label> <br/> <h5>Second question text</h5> <label class="small"><input type="radio" name="sec3_r2" value="(3:2) YES"> YES</label> <label class="small"><input type="radio" name="sec3_r2" value="(3:2) NO"> NO</label> <br/> <h5>Third Question</h5> <label class="small"><input type="radio" name="sec3_r3" value="(3:3) YES"> YES</label> <label class="small"><input type="radio" name="sec3_r3" value="(3:3) NO"> NO</label> </div> </div> <div id="formDiv" class="center"> <form target="#show_val_div" method="post"> <p>Choose Section Number</p> <label class="small"> <input type="radio" name="sec_num" value="1"> 1</label> <label class="small"> <input type="radio" name="sec_num" value="2"> 2</label> <label class="small"> <input type="radio" name="sec_num" value="3"> 3</label> <br/><br/> <p>Choose Question Number</p> <label class="small"> <input type="radio" name="qst_num" value="1"> 1</label> <label class="small"> <input type="radio" name="qst_num" value="2"> 2</label> <label class="small"> <input type="radio" name="qst_num" value="3"> 3</label> <br/><br/> <input id="submit" type="submit" value="Show Value"> </form> <br/> <p id="show_val_div"></p> </div> <br/><br/><br/>

首先，不能有多个具有相同id的元素。我知道你说过你无法控制表单的创建方式，但是……尝试以某种方式从无线电中删除所有id，或使它们唯一。

要获得所选单选按钮的值，请使用:checked筛选器按名称选择它。

var selectedVal = "";
var selected = $("input[type='radio'][name='s_2_1_6_0']:checked");
if (selected.length > 0) {
    selectedVal = selected.val();
}

EDIT

所以你无法控制名字。在这种情况下，我会说把这些单选按钮都放在一个div中，命名为radioDiv，然后稍微修改你的选择器:

var selectedVal = "";
var selected = $("#radioDiv input[type='radio']:checked");
if (selected.length > 0) {
    selectedVal = selected.val();
}