https://blog.youkuaiyun.com/EchoXF0zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/EchoXF0/article/details/105817198https://blog.youkuaiyun.com/EchoXF0/article/details/105817198EchoXF0Wed, 29 Apr 2020 09:31:15 +0800https://blog.youkuaiyun.com/EchoXF0/article/details/105562117https://blog.youkuaiyun.com/EchoXF0/article/details/105562117EchoXF0Thu, 16 Apr 2020 18:49:53 +0800https://blog.youkuaiyun.com/EchoXF0/article/details/105398223https://blog.youkuaiyun.com/EchoXF0/article/details/105398223EchoXF0Wed, 08 Apr 2020 22:03:18 +0800https://blog.youkuaiyun.com/EchoXF0/article/details/105279809https://blog.youkuaiyun.com/EchoXF0/article/details/105279809EchoXF0Thu, 02 Apr 2020 21:36:53 +0800https://blog.youkuaiyun.com/EchoXF0/article/details/105212101https://blog.youkuaiyun.com/EchoXF0/article/details/105212101EchoXF0Mon, 30 Mar 2020 23:44:23 +0800https://blog.youkuaiyun.com/EchoXF0/article/details/105168444https://blog.youkuaiyun.com/EchoXF0/article/details/105168444EchoXF0Sat, 28 Mar 2020 21:09:55 +0800https://blog.youkuaiyun.com/EchoXF0/article/details/105150585https://blog.youkuaiyun.com/EchoXF0/article/details/105150585EchoXF0Fri, 27 Mar 2020 21:20:55 +0800https://blog.youkuaiyun.com/EchoXF0/article/details/105149488https://blog.youkuaiyun.com/EchoXF0/article/details/105149488EchoXF0Fri, 27 Mar 2020 20:45:59 +0800https://blog.youkuaiyun.com/EchoXF0/article/details/105130006https://blog.youkuaiyun.com/EchoXF0/article/details/105130006EchoXF0Thu, 26 Mar 2020 23:04:21 +0800https://blog.youkuaiyun.com/EchoXF0/article/details/105125219https://blog.youkuaiyun.com/EchoXF0/article/details/105125219EchoXF0Thu, 26 Mar 2020 22:07:53 +0800声明位于文档中的最前面，是HTML5标准网页声明，处于标签之前。 告知浏览器的解析器，用什么文档类型规范来解析这个文档。DOCTYPE不存在或者格式 不正确会导致文档以混杂模式呈现。 2、 严格模式就是浏览器根据web标准去解析页面，是—种要求严格的 DTD(Document Type Definition)，不允许使用任何表现层的语法， 3、 混杂模式是—种向后兼容]]>https://blog.youkuaiyun.com/EchoXF0/article/details/105120170https://blog.youkuaiyun.com/EchoXF0/article/details/105120170EchoXF0Thu, 26 Mar 2020 17:18:22 +0800