jQuery实时监听input value变化的多种方案对比

<!DOCTYPE html> 
<html lang="en"> 
<head> 
  <meta charset="UTF-8"> 
  <title>Document</title> 
</head> 
<body id="lia-body"> 
  <div class="lia-content"> 
    <div class="inputwrapper"> 
      <label><span>姓名：</span><input type="text" name="fullname"></label> 
      <div class="result"></div> 
    </div> 
  </div> 
  <script src="http://apps.bdimg.com/libs/jquery/1.11.3/jquery.min.js"></script> 
  <script> 
    $(function(){ 
      var $inputwrapper = $('#lia-body .lia-content .inputwrapper'); 
      $inputwrapper.find('input').on('input propertychange',function(){ 
        var result = $(this).val(); 
        console.log(result); 
        $inputwrapper.find('.result').html(result); 
      }); 
    }) 
  </script> 
</body> 
</html>