$(document).ready(function() { var ckbox = $("input[name='ips']"); var chkId = ''; $('input').on('click', function() { if (ckbox.is(':checked')) { $("input[name='ips']:checked").each ( function() { chkId = $(this).val() + ","; chkId = chkId.slice(0, -1); }); alert ( $(this).val() ); // return all values of checkboxes checked alert(chkId); // return value of checkbox checked } }); }); <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <input type="checkbox" name="ips" value="12520"> <input type="checkbox" name="ips" value="12521"> <input type="checkbox" name="ips" value="12522">

$(document).ready(function() { var ckbox = $("input[name='ips']"); var chkId = ''; $('input').on('click', function() { if (ckbox.is(':checked')) { $("input[name='ips']:checked").each ( function() { chkId = $(this).val() + ","; chkId = chkId.slice(0, -1); }); alert ( $(this).val() ); // return all values of checkboxes checked alert(chkId); // return value of checkbox checked } }); }); <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <input type="checkbox" name="ips" value="12520"> <input type="checkbox" name="ips" value="12521"> <input type="checkbox" name="ips" value="12522">

用这个:

alert($(".messageCheckbox").is(":checked").val())

这假设要检查的复选框具有类“messageCheckbox”，否则您必须检查输入是否为复选框类型，等等。

在纯javascript中:

function test() {
    var cboxes = document.getElementsByName('mailId[]');
    var len = cboxes.length;
    for (var i=0; i<len; i++) {
        alert(i + (cboxes[i].checked?' checked ':' unchecked ') + cboxes[i].value);
    }
}

function selectOnlyOne(current_clicked) {
    var cboxes = document.getElementsByName('mailId[]');
    var len = cboxes.length;
    for (var i=0; i<len; i++) {
        cboxes[i].checked = (cboxes[i] == current);
    }
}

对于现代浏览器:

var checkedValue = document.querySelector('.messageCheckbox:checked').value;

使用jQuery:

var checkedValue = $('.messageCheckbox:checked').val();

纯javascript没有jQuery:

var checkedValue = null; 
var inputElements = document.getElementsByClassName('messageCheckbox');
for(var i=0; inputElements[i]; ++i){
      if(inputElements[i].checked){
           checkedValue = inputElements[i].value;
           break;
      }
}

如果你使用的是语义UI React，数据会作为第二个参数传递给onChange事件。

因此，您可以按以下方式访问选中的属性:

<Checkbox label="Conference" onChange={(e, d) => console.log(d.checked)} />