验证至少一个复选框

Question

我已经看到其他一些帖子有同样的问题,但无法让解决方案为我工作,所以我发布了自己的问题.

让我先说一下我是JQuery和MVC的新手.我有3个复选框,我需要确保至少检查其中一个.我有一些使用Jquery自定义验证的工作.但它在验证摘要中显示3条消息.我希望它只显示一条消息,如果可能,则不在验证摘要中.我怎么能实现这个目标？

HTML代码

<label for="river1">river1</label>
<input checked="checked" class="checkbox" data-val="true" data-val-required="The     river1 field is required." id="river1" name="river1" type="checkbox" value="true" />
<input name="river1" type="hidden" value="false" /><br />

<label for="river2">river2</label>
<input checked="checked" class="checkbox" data-val="true" data-val-required="The river2 field is required." id="river2" name="river2" type="checkbox" value="true" />
<input name="river2" type="hidden" value="false" /><br />

<label for="river3">river3</label>
<input checked="checked" class="checkbox" data-val="true" data-val-required="The river3 field is required." id="river3" name="river3" type="checkbox" value="true" />
<input name="river3" type="hidden" value="false" /><br />

JQuery的

$.validator.addMethod("checkbox", function (value, element) {
  return $('.checkbox:checked').length > 0;
  }, 'At least one river must be selected.');

Answer 1

工作演示 http://jsfiddle.net/RGUTv/

更新 - 2015年1月12日=> http://jsfiddle.net/r24kcvz6/ CDN是cahnged http://ajax.aspnetcdn.com/ajax/jquery.validate/1.13.1/jquery.validate.js - 你可以复制通过去除所有复选框并单击submit按钮的行为.

• http://jqueryvalidation.org/#latest-files-on-jsdelivr-cdn-%28hotlinking-welcome%29:

码

$.validator.addMethod('require-one', function(value) {
    return $('.require-one:checked').size() > 0;
}, 'Please check at least one box.');

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

$("#itemForm").validate({
    groups: {
        checks: checkbox_names
    },
    errorPlacement: function(error, element) {
        if (element.attr("type") == "checkbox") error.insertAfter(checkboxes.last());
        else error.insertAfter(element);
    }
});

HTML

<form name="itemForm" id="itemForm" method="post">

<label for="river1">river1</label>
<input checked="checked" data-val="true" data-val-required="The     river1 field is required." id="river1" name="river1" type="checkbox" value="true" class="require-one" />
<input name="river1" type="hidden" value="false" /><br />

<label for="river2">river2</label>
<input checked="checked" data-val="true" data-val-required="The river2 field is required." id="river2" name="river2" type="checkbox" value="true" class="require-one" />
<input name="river2" type="hidden" value="false" /><br />

<label for="river3">river3</label>
<input checked="checked" data-val="true" data-val-required="The river3 field is required." id="river3" name="river3" type="checkbox" value="true" class="require-one" />
<input name="river3" type="hidden" value="false" /><br />

<input type="submit" />
</form>

图像,如果您取消勾选验证将触发