网络知识点前端的相关内容

文章 2022-06-13 来自：开发者社区

（2.6w字）网络知识点灵魂拷问（下）——前端面试必问

十一、HTTP协议（请求报文和响应报文）11.1 请求报文HTTP请求报文主要包括：请求行、请求头部以及请求的数据（实体）。1.请求行：方法字段、URI字段和协议版本方法字段：GET（请求获取内容）、POST（提交表单）、HEAD（请求资源响应消息报头）、PUT（传输文件）、DELETE（请求删除URI指向的资源）、OPTIONS（查询针对请求URI指定的资源支持的方法）、TRACE（追踪请求经....

文章 2022-06-13 来自：开发者社区

（2.6w字）网络知识点灵魂拷问（上）——前端面试必问

一、当浏览器输入一个url请求会经历什么？1.浏览器的地址栏输入URL并按下回车2.DNS域名解析（1）在浏览器DNS缓存中搜索（2）如果浏览器缓存中没有，操作系统会先检查自己本地的hosts文件是否有这个网址映射关系，如果有，就先调用这个IP地址映射，完成域名解析。（3）如果hosts里没有这个域名的映射，则查找本地DNS解析器缓存，是否有这个网址映射关系，如果有，直接返回，完成域名解析。（4....

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