如何检查多个复选框中是否选中了至少一个复选框？

Question

在我的表单中使用了很多复选框.我想检查是否至少选中了一个复选框.

<div id="sun">
    <li><?php echo $this->__("SUN");?> </li>
    <li><input class="allday" type="checkbox" name="availableday[Sunday][9-12]" value="9AM - 12AM"></li>
    <li><input class="allday" type="checkbox" name="availableday[Sunday][12-6]" value="12PM - 6PM"></li>
    <li><input class="allday" type="checkbox" name="availableday[Sunday][6-9]" value="6PM - 9PM"></li>
</div>
<div id="mon">
    <li><?php echo $this->__("MON");?> </li>
    <li><input class="allday" type="checkbox" name="availableday[Monday][9-12]" value="9AM - 12AM"></li>
    <li><input class="allday" type="checkbox" name="availableday[Monday][12-6]" value="12PM - 6PM"></li>
    <li><input class="allday" type="checkbox" name="availableday[Monday][6-9]" value="6PM - 9PM"></li>
</div>
<div id="tue">
    <li><?php echo $this->__("TUE");?> </li>
    <li><input class="allday" type="checkbox" name="availableday[Tuesday][9-12]" value="9AM - 12AM"></li>
    <li><input class="allday" type="checkbox" name="availableday[Tuesday][12-6]" value="12PM - 6PM"></li>
    <li><input class="allday" type="checkbox" name="availableday[Tuesday][6-9]" value="6PM - 9PM"></li>
</div>
<div id="wed">
    <li><?php echo $this->__("WED");?> </li>
    <li><input class="allday" type="checkbox" name="availableday[Wednesday][9-12]" value="9AM - 12AM"></li>
    <li><input class="allday" type="checkbox" name="availableday[Wednesday][12-6]" value="12PM - 6PM"></li>
    <li><input class="allday" type="checkbox" name="availableday[Wednesday][6-9]" value="6PM - 9PM"></li>
</div>

如何验证至少一个复选框？

Answer 1

好吧,直截了当:

var isSomeAlldayCheckboxChecked = document
  .querySelectorAll('input[type="checkbox"].allday')
  .some(function (each) { return each.checked; });

Answer 2

以下内容:

var formNodes  = document.checks.getElementsByTagName('input');
for (var i=0;i<formNodes.length;i++) {
   /* If one is true set a variable to true and exit the loop */
}

堆栈溢出帖在这里

干杯,

Truez

Answer 3

var count= 0;
var value_array=new Array();
jQuery('input[type="checkbox"]:checked').each(function(){ 
   value_array.push(jQuery(this).val());
   count = count + 1;
});

// count&value_array will tell you total selected