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https://www.china-siter.cn/upload/js/2189a6549efa48e99e2cb31cd3701…&viewType=p&v=1777428286000&siteType=oper

js china-siter.cn collected 2026-10-06 21:36:46 UTC 661 bytes, 13 lines download raw bytes 

1$(document).scroll(function(){
2    if(window.scrollY >= 80){/*80为滚动条距离顶部的距离*/
3    $('div#c_grid-116273709439191').addClass('beijing');/*获取某个div的ID，满足条件后添加‘beijing’类名class*/
4    }else{/*不满足条件的时候执行*/
5        $('div#c_grid-116273709439191').removeClass('beijing');
6    }
7});
8/*
91、使用时可自由设置距离顶部的高度
102、只需将div#c_grid-116273709439191中的#c_grid-116273709439191这一段替换即可
113、beijing类名如不满足可自由编辑为其他类名
124、具体实现的样式需要自行到样式文件里定义beijing或者已修改为其他的类名样式
13*/

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