How to find nearest set of radio button and clear them
问题 <div class="answer"> <div class="r0"> <input type="radio" name="q31:1_answer" value="0" <?php echo ($quiz_answer1=='0' )? 'checked': ''?> id="q31:1_answer0"> <label for="q31:1_answer0" class="m-l-1">a. <break> </label> </div> <div class="r1"> <input type="radio" name="q31:1_answer" value="1" <?php echo ($quiz_answer1=='1' )? 'checked': ''?> id="q31:1_answer1"> <label for="q31:1_answer1" class="m-l-1">b. <br> </label> </div> <div class="r0"> <input type="radio" name="q31:1_answer" value="2" <