循环判断单选是否选择了--可做为试题循环判断

html

        <div class="form-group clearfix">
                          <label class="col-xs-12 l_name"><strong>*</strong>{$to.title}</label>
                          <img class="col-xs-12" src="<?php echo C('IMG_URL'); ?>{$to.picture}" class="img-responsive" alt="Responsive image">
                     <div class="col-xs-12 panduan" style="margin:20px auto">  
                          <label class="col-xs-3"><input name="shiti[{$k}][]" type="radio" value="A" />A </label> 
                          <label class="col-xs-3"><input name="shiti[{$k}][]" type="radio" value="B" />B </label> 
                          <label class="col-xs-3"><input name="shiti[{$k}][]" type="radio" value="C" />C </label> 
                          <label class="col-xs-3"><input name="shiti[{$k}][]" type="radio" value="D" />D </label>
                   </div>
                      
        </div>
 </foreach> 

  <div class="form" >
        <form class="yourform" action="/index.php?s=/Home/Zli/score" method="post"  id='form1' enctype="multipart/form-data">
           <input type="hidden" name="aid" value="2">
           <!-- 填空题 -->

   <div class="form-group clearfix">
                          <label class="col-xs-12 l_name"><strong>*</strong>4. 请选择最适合的一项填入问号处，使之符合之前四个图形的变化规律。</label>
                          <img class="col-xs-12" src="/Home/Public/images/weixin/shiti2_1.png" class="img-responsive" alt="Responsive image">
                     <div class="col-xs-12 panduan" style="margin:20px auto">  
                          <label class="col-xs-3"><input name="shiti[0][]" type="radio" value="A" />A </label> 
                          <label class="col-xs-3"><input name="shiti[0][]" type="radio" value="B" />B </label> 
                          <label class="col-xs-3"><input name="shiti[0][]" type="radio" value="C" />C </label> 
                          <label class="col-xs-3"><input name="shiti[0][]" type="radio" value="D" />D </label>
                   </div>
                      
        </div><div class="form-group clearfix">
                          <label class="col-xs-12 l_name"><strong>*</strong>5. 从所给的四个选项中，选择最合适的一个填入问号处，使之呈现一定的规律性：</label>
                          <img class="col-xs-12" src="/Home/Public/images/weixin/shiti2_2.png" class="img-responsive" alt="Responsive image">
                     <div class="col-xs-12 panduan" style="margin:20px auto">  
                          <label class="col-xs-3"><input name="shiti[1][]" type="radio" value="A" />A </label> 
                          <label class="col-xs-3"><input name="shiti[1][]" type="radio" value="B" />B </label> 
                          <label class="col-xs-3"><input name="shiti[1][]" type="radio" value="C" />C </label> 
                          <label class="col-xs-3"><input name="shiti[1][]" type="radio" value="D" />D </label>
                   </div>
                      
        </div><div class="form-group clearfix">
                          <label class="col-xs-12 l_name"><strong>*</strong>6.从所给的四个选项中,选择最合适的一个填入问号处，使之呈现一定的规律性：</label>
                          <img class="col-xs-12" src="/Home/Public/images/weixin/shiti2_3.png" class="img-responsive" alt="Responsive image">
                     <div class="col-xs-12 panduan" style="margin:20px auto">  
                          <label class="col-xs-3"><input name="shiti[2][]" type="radio" value="A" />A </label> 
                          <label class="col-xs-3"><input name="shiti[2][]" type="radio" value="B" />B </label> 
                          <label class="col-xs-3"><input name="shiti[2][]" type="radio" value="C" />C </label> 
                          <label class="col-xs-3"><input name="shiti[2][]" type="radio" value="D" />D </label>
                   </div>
                      
        </div> 

         
          <div class="clearfix"></div>

          <div class="text-center">
          		<button  id="btnGo" type="button" onclick="return validateForm();" class="btn">提交</button>
          </div>
       
	     
       </form>
</div

　　jquery

<script type="text/javascript">
   function validateForm(){ 
      var tishi = true;
      $.each($(".panduan"),function(i,item){
            if(!$(this).find("input:checked").size()){             
               tishi = false;                         
           } 
        });
     if(tishi){       
          $("#form1").submit();
     
      }else{
          alert("您未答题完毕，请完成后点击提交");
      }
  }  
</script>