【202308】美团优选前端一面（凉） · 大厂前端面试真题

[1、OSI七层网络协议，TCP/IP五层网络协议，分别介绍一下](1%E3%80%81OSI%E4%B8%83%E5%B1%82%E7%BD%91%E7%BB%9C%E5%8D%8F%E8%AE%AE%EF%BC%8CTCP-IP%E4%BA%94%E5%B1%82%E7%BD%91%E7%BB%9C%E5%8D%8F%E8%AE%AE%EF%BC%8C%E5%88%86%E5%88%AB%E4%BB%8B%E7%BB%8D%E4%B8%80%E4%B8%8B.md) [2、五层协议少的那两层协议具体是干什么的？](2%E3%80%81%E4%BA%94%E5%B1%82%E5%8D%8F%E8%AE%AE%E5%B0%91%E7%9A%84%E9%82%A3%E4%B8%A4%E5%B1%82%E5%8D%8F%E8%AE%AE%E5%85%B7%E4%BD%93%E6%98%AF%E5%B9%B2%E4%BB%80%E4%B9%88%E7%9A%84%EF%BC%9F.md) [3、应用层主要用作用？](3%E3%80%81%E5%BA%94%E7%94%A8%E5%B1%82%E4%B8%BB%E8%A6%81%E7%94%A8%E4%BD%9C%E7%94%A8%EF%BC%9F.md) [4、运输层主要干什么的？](4%E3%80%81%E8%BF%90%E8%BE%93%E5%B1%82%E4%B8%BB%E8%A6%81%E5%B9%B2%E4%BB%80%E4%B9%88%E7%9A%84%EF%BC%9F.md) [5、http和https的区别](5%E3%80%81http%E5%92%8Chttps%E7%9A%84%E5%8C%BA%E5%88%AB.md) [6、介绍一下https具体的加密方法，怎么实现的？](6%E3%80%81%E4%BB%8B%E7%BB%8D%E4%B8%80%E4%B8%8Bhttps%E5%85%B7%E4%BD%93%E7%9A%84%E5%8A%A0%E5%AF%86%E6%96%B9%E6%B3%95%EF%BC%8C%E6%80%8E%E4%B9%88%E5%AE%9E%E7%8E%B0%E7%9A%84%EF%BC%9F.md) [7、TCP和UDP的区别](7%E3%80%81TCP%E5%92%8CUDP%E7%9A%84%E5%8C%BA%E5%88%AB.md) [8、TCP的三次握手和四次挥手](8%E3%80%81TCP%E7%9A%84%E4%B8%89%E6%AC%A1%E6%8F%A1%E6%89%8B%E5%92%8C%E5%9B%9B%E6%AC%A1%E6%8C%A5%E6%89%8B.md) [9、TCP和UDP分别用于哪些应用场景？](9%E3%80%81TCP%E5%92%8CUDP%E5%88%86%E5%88%AB%E7%94%A8%E4%BA%8E%E5%93%AA%E4%BA%9B%E5%BA%94%E7%94%A8%E5%9C%BA%E6%99%AF%EF%BC%9F.md) [10、Cookie和localStorage的区别](10%E3%80%81Cookie%E5%92%8ClocalStorage%E7%9A%84%E5%8C%BA%E5%88%AB.md) [11、LocalStorage存储的内容超出存储限制应该怎么处理？](11%E3%80%81LocalStorage%E5%AD%98%E5%82%A8%E7%9A%84%E5%86%85%E5%AE%B9%E8%B6%85%E5%87%BA%E5%AD%98%E5%82%A8%E9%99%90%E5%88%B6%E5%BA%94%E8%AF%A5%E6%80%8E%E4%B9%88%E5%A4%84%E7%90%86%EF%BC%9F.md) [12、http发送请求请求头有哪些内容？](12%E3%80%81http%E5%8F%91%E9%80%81%E8%AF%B7%E6%B1%82%E8%AF%B7%E6%B1%82%E5%A4%B4%E6%9C%89%E5%93%AA%E4%BA%9B%E5%86%85%E5%AE%B9.md) [13、HTTP的状态码有哪些？](13%E3%80%81HTTP%E7%9A%84%E7%8A%B6%E6%80%81%E7%A0%81%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F.md) [14、JS的基本数据类型](14%E3%80%81JS%E7%9A%84%E5%9F%BA%E6%9C%AC%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B.md) [15、介绍一下原型和原型链](15%E3%80%81%E4%BB%8B%E7%BB%8D%E4%B8%80%E4%B8%8B%E5%8E%9F%E5%9E%8B%E5%92%8C%E5%8E%9F%E5%9E%8B%E9%93%BE.md) [16、介绍一下Promise和async await](16%E3%80%81%E4%BB%8B%E7%BB%8D%E4%B8%80%E4%B8%8BPromise%E5%92%8Casyncawait.md) [17、介绍一下事件循环](17%E3%80%81%E4%BB%8B%E7%BB%8D%E4%B8%80%E4%B8%8B%E4%BA%8B%E4%BB%B6%E5%BE%AA%E7%8E%AF.md) [18、有哪些是异步宏任务，哪些是异步微任务，他们分别的执行顺序？](18%E3%80%81%E6%9C%89%E5%93%AA%E4%BA%9B%E6%98%AF%E5%BC%82%E6%AD%A5%E5%AE%8F%E4%BB%BB%E5%8A%A1%EF%BC%8C%E5%93%AA%E4%BA%9B%E6%98%AF%E5%BC%82%E6%AD%A5%E5%BE%AE%E4%BB%BB%E5%8A%A1%EF%BC%8C%E4%BB%96%E4%BB%AC%E5%88%86%E5%88%AB%E7%9A%84%E6%89%A7%E8%A1%8C%E9%A1%BA%E5%BA%8F%EF%BC%9F.md) [19、React和Vue的区别](19%E3%80%81React%E5%92%8CVue%E7%9A%84%E5%8C%BA%E5%88%AB.md) [20、介绍一下发布订阅者模式](20%E3%80%81%E4%BB%8B%E7%BB%8D%E4%B8%80%E4%B8%8B%E5%8F%91%E5%B8%83%E8%AE%A2%E9%98%85%E8%80%85%E6%A8%A1%E5%BC%8F.md) [21、介绍一下CSS选择器的权重](21%E3%80%81%E4%BB%8B%E7%BB%8D%E4%B8%80%E4%B8%8BCSS%E9%80%89%E6%8B%A9%E5%99%A8%E7%9A%84%E6%9D%83%E9%87%8D.md) [22、手写：给Array.prototype添加一个数组去重的方法](22%E3%80%81%E6%89%8B%E5%86%99%EF%BC%9A%E7%BB%99Array.prototype%E6%B7%BB%E5%8A%A0%E4%B8%80%E4%B8%AA%E6%95%B0%E7%BB%84%E5%8E%BB%E9%87%8D%E7%9A%84%E6%96%B9%E6%B3%95.md) [23、手写：拼接两个数组，并排序](23%E3%80%81%E6%89%8B%E5%86%99%EF%BC%9A%E6%8B%BC%E6%8E%A5%E4%B8%A4%E4%B8%AA%E6%95%B0%E7%BB%84%EF%BC%8C%E5%B9%B6%E6%8E%92%E5%BA%8F.md)