placeholder兼容ie8

<script type="text/javascript">  

  if( !('placeholder' in document.createElement('input')) ){  
   
    $('input[placeholder],textarea[placeholder]').each(function(){   
      var that = $(this),   
      text= that.attr('placeholder');   
      if(that.val()===""){   
        that.val(text).addClass('placeholder');   
      }   
      that.focus(function(){   
        if(that.val()===text){   
          that.val("").removeClass('placeholder');   
        }   
      })   
      .blur(function(){   
        if(that.val()===""){   
          that.val(text).addClass('placeholder');   
        }   
      })   
      .closest('form').submit(function(){   
        if(that.val() === text){   
          that.val('');   
        }   
      });   
    });   
  }  
</script> 
posted @ 2016-08-15 17:49  TZZmeing  阅读(152)  评论(0)  编辑  收藏  举报