jQuery验证 - 仅在选中单选按钮时，才会检查一组复选框中的至少一个

Question

我正在使用 jquery 验证插件来确保选中一组三个复选框中的至少一个，并且它工作正常。 但我只想在选中单选按钮“Sim”时验证这些复选框。 我不知道该怎么做。

演示： http : //jsfiddle.net/TnmGr

html格式：

<form name="itemForm" id="itemForm" method="post">
<p>
  <input name="resp01" type="radio" value="sim" id="resp01-sim" class="resp" /> <label for="resp01-sim">Sim</label>
  <input name="resp01" type="radio" value="não" id="resp01-nao" class="resp" /> <label for="resp01-nao">Não</label>
</p>
<fieldset style="width:200px"><legend>Outros catalogos</legend>
<input id="opt01" name="opt01" type="checkbox" value="true" class="require-one" />
<label for="opt01">opt01</label>
<input name="opt01" type="hidden" value="false" /><br />

<input id="opt02" name="opt02" type="checkbox" value="true" class="require-one" />
<label for="opt02">opt02</label>
<input name="river2" type="hidden" value="false" /><br />

<input id="opt03" name="opt03" type="checkbox" value="true" class="require-one" />
<label for="opt03">opt03</label>
<input name="opt03" type="hidden" value="false" /><br />
</fieldset>
<div class="error" id="form_error"></div>
<br />
<input type="submit" />

JS ：

$.validator.addMethod('require-one', function(value) {
    return $('.require-one:checked').size() > 0;
}, 'Selecione pelo menos uma das opções.');

$(document).ready(function(){

    var checkboxes = $('.require-one');
    var checkbox_names = $.map(checkboxes, function(e, i) {
        return $(e).attr("name")
    }).join(" ");

    $("#itemForm").validate({
        groups: {
            checks: checkbox_names
        },
        rules: {
            resp01: 'required',
        },
        messages: {
            resp01:  { required: 'Selecione uma resposta!' },
        },
        errorPlacement: function(error, element) {
            $('#form_error').append(error);
        },
        submitHandler: function(form) {
            alert('Form Submited');
            return false;
        }        

    });
});

Answer 1

您只需要更改自定义方法的逻辑。

$.validator.addMethod('require-one', function(value) {
    if ($('#resp01-sim').is(':checked')) {
        return $('.require-one:checked').size() > 0;
    } else {
        return true;
    }
}, 'Selecione pelo menos uma das opções.');

演示： http ： //jsfiddle.net/TnmGr/4/

Answer 2

使用 jquery 的内置函数验证来自组的需求

$("#itemForm").validate({ 
 rules: {

opt01: {
   require_from_group: function () {
      if ($('#resp01-sim').is(':checked')) {
         return [1, ".require-one"]
      } else { return [0, ".require-one"] }
   },
},


opt02: {
   require_from_group: function () {
      if ($('#resp01-sim').is(':checked')) {
         return [1, ".require-one"]
      } else { return [0, ".require-one"] }
   },
},

opt03: {
   require_from_group: function () {
      if ($('#resp01-sim').is(':checked')) {
         return [1, ".require-one"]
      } else { return [0, ".require-one"] }
   },
},
}
});

Answer 3

您可以尝试内置功能：

$( "#itemForm" ).validate({
  rules: {
    opt01: {
      required: "#resp01-sim"
    }
  }
});

http://jqueryvalidation.org/required-method/#example:-makes-details-required-only-if-#other-is-checked