jquery 点击图片弹出遮罩层查看大图

<div class="photobox">
  <ul>
     <li  data-date="'+data[i].id+'">
         <div class="imgbox">
             <img src="..."/>
         </div>
     </li>
     <li>......</li>
     <li>......</li>
  </ul>
</div>
//图片预览功能
$('.photobox').on('click','li .imgbox img',function(){
var sta = $(this).parents('li').attr('data-date');
    $.get(
        'http://...../get?access_token=...&img_id='+sta+'',function(data){
var imge = '<div class="fa" style="height:100%;100%;z-index:999999;background-color:rgba(70,70,70,.6);position:fixed;top:0">' +
'</div>';
var showImg = '<img class="show" style="position:fixed;top:0;left: 0;right:0;bottom:0;margin:auto;z-index:1000000; 40%;" src="' + data.images[0] + '" alt="please wait">';
            $('body').append(imge);
            $('.fa').append(showImg);
            $('.fa').append('<div >)