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%;width: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;width: 40%;" src="' + data.images[0] + '" alt="please wait">';
            $('body').append(imge);
            $('.fa').append(showImg);
            $('.fa').append('<div id="left">&lt;</div><div id="right">&gt;</div>');
            $('#left,#right').css({
                'font-size':'30px',
                'color':'#FFF',
                'position':'absolute',
                'top':'50%',
                'margin-top':'-20px',
                'cursor':'pointer',
                'z-index':10000001
            });
            $('#left').css('left','5px');
            $('#right').css('right','5px');
            //追加点击消失图片
            $('.fa').append('<span id="none" style="font-size: 30px;z-index: 10000001;position: fixed;cursor: pointer;color: #ffffff;right: 10px">&times;</span>');
            $('.fa').append('<div id="ye" style="color:#FFFFFF;width: 100px;text-align: center;position: absolute;left: 50%;margin-left: -50px;z-index: 10000001;top:12px"><span>1</span>/<span>'+data.images.length+'</span></div>');
            var i = 0; //声明初值
            //左右滑动切换图片
                $('#right').click(function(){
                    i++;
                    if(i >= data.images.length){
                        $('.fa').remove();
                    }
                    $('.fa img').attr('src',data.images[i]);
                    $('.fa #ye span:first-child').text(i+1);
                });
                $('#left').click(function(){
                    i--;
                    if(i<0){
                        $('.fa').remove();
                    }
                    $('.fa img').attr('src',data.images[i]);
                    $('.fa #ye span:first-child').text(i+1);
                });
            //点击消失图片
            $('#none').click(function(){
                $('.fa').remove();
            });
        }
    );
})