一个通用的解决方案，无需更改提交事件或知道复选框的名称

构建一个函数，将复选框标记为HTML5-Invalid 扩展Change-Event并在开始时检查有效性

jQuery.fn.getSiblingsCheckboxes = function () { let $this = $(this); let $parent = $this.closest('form, .your-checkbox-listwrapper'); return $parent.find('input[type="checkbox"][name="' + $this.attr('name')+'"]').filter('*[required], *[data-required]'); } jQuery.fn.checkRequiredInputs = function() { return this.each(function() { let $this = $(this); let $parent = $this.closest('form, .your-checkbox-list-wrapper'); let $allInputs = $this.getSiblingsCheckboxes(); if ($allInputs.filter(':checked').length > 0) { $allInputs.each(function() { // this.setCustomValidity(''); // not needed $(this).removeAttr('required'); $(this).closest('li').css('color', 'green'); // for debugging only }); } else { $allInputs.each(function() { // this.reportValidity(); // not needed $(this).attr('required', 'required'); $(this).closest('li').css('color', 'red'); // for debugging only }); } return true; }); }; $(document).ready(function() { $('input[type="checkbox"][required="required"], input[type="checkbox"][required]').not('*[data-required]').not('*[disabled]').each(function() { let $input = $(this); let $allInputs = $input.getSiblingsCheckboxes(); $input.attr('data-required', 'required'); $input.removeAttr('required'); $input.on('change', function(event) { $input.checkRequiredInputs(); }); }); $('input[type="checkbox"][data-required="required"]').checkRequiredInputs(); }); <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script> </head> <form> <ul> <li><input type="checkbox" id="checkbox1" name="countries" value="Argentina" required="required">Argentina</li> <li><input type="checkbox" id="checkbox2" name="countries" value="France" required="required">France</li> <li><input type="checkbox" id="checkbox3" name="countries" value="Germany" required="required">Germany</li> <li><input type="checkbox" id="checkbox4" name="countries" value="Japan" required="required">Japan</li> <li><input type="checkbox" id="checkbox5" name="countries" value="Australia" required="required">Australia</li> </ul> <input type="submit" value="Submit"> </form>

这是一个简单的技巧。这是jQuery代码，可以通过更改所需的属性来利用html5验证。下面是html代码(确保为组中的所有元素添加了required)。

<input type="checkbox" name="option[]" id="option-1" value="option1" required/> Option 1
<input type="checkbox" name="option[]" id="option-2" value="option2" required/> Option 2
<input type="checkbox" name="option[]" id="option-3" value="option3" required/> Option 3
<input type="checkbox" name="option[]" id="option-4" value="option4" required/> Option 4
<input type="checkbox" name="option[]" id="option-5" value="option5" required/> Option 5

下面是jQuery脚本，如果选择了任何一个，它将禁用进一步的验证检查。选择使用name元素。

$cbx_group = $("input:checkbox[name='option[]']");
$cbx_group = $("input:checkbox[id^='option-']"); // name is not always helpful ;)

$cbx_group.prop('required', true);
if($cbx_group.is(":checked")){
  $cbx_group.prop('required', false);
}

这里有个小问题:因为你正在使用html5验证，确保你在它得到验证之前执行这个，即在表单提交之前。

// but this might not work as expected
$('form').submit(function(){
  // code goes here
});

// So, better USE THIS INSTEAD:
$('button[type="submit"]').on('click', function() {
  // skipping validation part mentioned above
});

一个通用的解决方案，无需更改提交事件或知道复选框的名称

构建一个函数，将复选框标记为HTML5-Invalid 扩展Change-Event并在开始时检查有效性

jQuery.fn.getSiblingsCheckboxes = function () { let $this = $(this); let $parent = $this.closest('form, .your-checkbox-listwrapper'); return $parent.find('input[type="checkbox"][name="' + $this.attr('name')+'"]').filter('*[required], *[data-required]'); } jQuery.fn.checkRequiredInputs = function() { return this.each(function() { let $this = $(this); let $parent = $this.closest('form, .your-checkbox-list-wrapper'); let $allInputs = $this.getSiblingsCheckboxes(); if ($allInputs.filter(':checked').length > 0) { $allInputs.each(function() { // this.setCustomValidity(''); // not needed $(this).removeAttr('required'); $(this).closest('li').css('color', 'green'); // for debugging only }); } else { $allInputs.each(function() { // this.reportValidity(); // not needed $(this).attr('required', 'required'); $(this).closest('li').css('color', 'red'); // for debugging only }); } return true; }); }; $(document).ready(function() { $('input[type="checkbox"][required="required"], input[type="checkbox"][required]').not('*[data-required]').not('*[disabled]').each(function() { let $input = $(this); let $allInputs = $input.getSiblingsCheckboxes(); $input.attr('data-required', 'required'); $input.removeAttr('required'); $input.on('change', function(event) { $input.checkRequiredInputs(); }); }); $('input[type="checkbox"][data-required="required"]').checkRequiredInputs(); }); <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script> </head> <form> <ul> <li><input type="checkbox" id="checkbox1" name="countries" value="Argentina" required="required">Argentina</li> <li><input type="checkbox" id="checkbox2" name="countries" value="France" required="required">France</li> <li><input type="checkbox" id="checkbox3" name="countries" value="Germany" required="required">Germany</li> <li><input type="checkbox" id="checkbox4" name="countries" value="Japan" required="required">Japan</li> <li><input type="checkbox" id="checkbox5" name="countries" value="Australia" required="required">Australia</li> </ul> <input type="submit" value="Submit"> </form>

纯JS解决方案:

const group = document.querySelectorAll('[name="myCheckboxGroup"]');

function requireLeastOneChecked() {
    var atLeastOneChecked = false;
    for (i = 0; i < group.length; i++)
        if (group[i].checked)
            atLeastOneChecked = true;
    if (atLeastOneChecked)
        for (i = 0; i < group.length; i++)
            group[i].required = false;
    else
        for (i = 0; i < group.length; i++)
            group[i].required = true;
}
requireLeastOneChecked(); // onload

group.forEach(function ($el) {
    $el.addEventListener('click', function () { requireLeastOneChecked(); })
});

我也遇到过同样的问题，我的解决方案是这样的:

HTML:

<form id="processForm.php" action="post">
  <div class="input check_boxes required wish_payment_type">
    <div class="wish_payment_type">
    <span class="checkbox payment-radio">
      <label for="wish_payment_type_1">
        <input class="check_boxes required" id="wish_payment_type_1" name="wish[payment_type][]" type="checkbox" value="1">Foo
      </label>
    </span>
    <span class="checkbox payment-radio">
      <label for="wish_payment_type_2">
        <input class="check_boxes required" id="wish_payment_type_2" name="wish[payment_type][]" type="checkbox" value="2">Bar
      </label>
    </span>
    <span class="checkbox payment-radio">
      <label for="wish_payment_type_3">
        <input class="check_boxes required" id="wish_payment_type_3" name="wish[payment_type][]" type="checkbox" value="3">Buzz
      </label>
          
      <input id='submit' type="submit" value="Submit">
  </div>
</form>

JS:

var verifyPaymentType = function () {
  var checkboxes = $('.wish_payment_type .checkbox');
  var inputs = checkboxes.find('input');
  var first = inputs.first()[0];

  inputs.on('change', function () {
    this.setCustomValidity('');
  });

  first.setCustomValidity(checkboxes.find('input:checked').length === 0 ? 'Choose one' : '');
}

$('#submit').click(verifyPaymentType);

https://jsfiddle.net/oywLo5z4/

我知道这里有很多解决方案，但我发现没有一个能满足我的所有要求:

不需要自定义编码 代码在页面加载时工作 不需要自定义类(复选框或它们的父类) 我需要几个复选框列表共享相同的名称，通过他们的API提交Github问题，并使用名称标签[]跨许多表单字段分配标签(两个复选框列表和一些选择和文本框)-授予我可以实现这一点，没有他们共享相同的名称，但我决定尝试一下，它起作用了。

唯一的要求是jQuery，如果你想用普通的JS重写它，它很容易被消除。您可以将其与@ewall的出色解决方案结合起来，添加自定义验证错误消息。

/* required checkboxes */ jQuery(function ($) { var $requiredCheckboxes = $("input[type='checkbox'][required]"); /* init all checkbox lists */ $requiredCheckboxes.each(function (i, el) { //this could easily be changed to suit different parent containers var $checkboxList = $(this).closest("div, span, p, ul, td"); if (!$checkboxList.hasClass("requiredCheckboxList")) $checkboxList.addClass("requiredCheckboxList"); }); var $requiredCheckboxLists = $(".requiredCheckboxList"); $requiredCheckboxLists.each(function (i, el) { var $checkboxList = $(this); $checkboxList.on("change", "input[type='checkbox']", function (e) { updateCheckboxesRequired($(this).parents(".requiredCheckboxList")); }); updateCheckboxesRequired($checkboxList); }); function updateCheckboxesRequired($checkboxList) { var $chk = $checkboxList.find("input[type='checkbox']").eq(0), cblName = $chk.attr("name"), cblNameAttr = "[name='" + cblName + "']", $checkboxes = $checkboxList.find("input[type='checkbox']" + cblNameAttr); if ($checkboxList.find(cblNameAttr + ":checked").length > 0) { $checkboxes.prop("required", false); } else { $checkboxes.prop("required", true); } } }); <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <form method="post" action="post.php"> <div> Type of report: </div> <div> <input type="checkbox" id="chkTypeOfReportError" name="label[]" value="Error" required> <label for="chkTypeOfReportError">Error</label> <input type="checkbox" id="chkTypeOfReportQuestion" name="label[]" value="Question" required> <label for="chkTypeOfReportQuestion">Question</label> <input type="checkbox" id="chkTypeOfReportFeatureRequest" name="label[]" value="Feature Request" required> <label for="chkTypeOfReportFeatureRequest">Feature Request</label> </div> <div> Priority </div> <div> <input type="checkbox" id="chkTypeOfContributionBlog" name="label[]" value="Priority: High" required> <label for="chkPriorityHigh">High</label> <input type="checkbox" id="chkTypeOfContributionBlog" name="label[]" value="Priority: Medium" required> <label for="chkPriorityMedium">Medium</label> <input type="checkbox" id="chkTypeOfContributionLow" name="label[]" value="Priority: Low" required> <label for="chkPriorityMedium">Low</label> </div> <div> <input type="submit" /> </div> </form>