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浏览器是如何对页面进行渲染的呢？
2022-07-03 01:25:00 【怎么又有bug单】
相信这是面试中经常会问的一个问题O(∩_∩)O哈哈~
从客观来讲，自称一个java后端工程师，或者是程序员，连页面怎么渲染的都不知道，确实有点说不过去~
不过实际也就是一个概念吧，能不能说出来，其实也不见得就能证明能力什么的，但这个问题如果答不上来，应该还是会让人家挺失望的。O(∩_∩)O哈哈~
当我们在web浏览器的地址栏中输入：www.baidu.com，具体发生了什么？
- 对 www.baidu.com 这个网址进行DNS域名解析，得到对应的IP地址
- 根据这个IP，找到对应的服务器，发起TCP的三次握手
- 建立TCP连接后, 发起HTTP请求
- 服务器响应HTTP请求，浏览器得到html代码
- 浏览器解析html代码，并请求html代码中的资源（如js、css、图片等）（先得到html代码，才能去找这些资源）
- 浏览器对页面进行渲染呈现给用户
- 服务过程完毕, 关闭TCP连接, 四次挥手
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