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[html] 第66天 HTML5如果不写<! DOCTYPE html> ，页面还会正常工作么？ #403

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haizhilin2013 opened this issue Jun 20, 2019 · 3 comments
Open

[html] 第66天 HTML5如果不写<! DOCTYPE html> ，页面还会正常工作么？ #403

haizhilin2013 opened this issue Jun 20, 2019 · 3 comments
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@haizhilin2013
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第66天 HTML5如果不写<! DOCTYPE html> ，页面还会正常工作么？
@haizhilin2013 haizhilin2013 added the html html label Jun 20, 2019
@wenyejie
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会啊! 只是有时候不是按照你想的那种情况来工作, 不过浏览器认为那是正常的
doctype就是声明文档类型, 它的影响范围包括HTML, CSS, DOM, 等
如果不声明文档类型, 浏览器就会按照自己的理解(规则)默认帮你声明一种类型. 具体看浏览器行为

@yxkhaha
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yxkhaha commented Jun 21, 2019

  • 页面添加了<! DOCTYPE html>说明该页面采用了W3C标准，如果不加则页面会根据浏览器自身的解析标准来解析，这可能会导致页面在不同的浏览器呈现出不同的效果。

@smile-2008
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  • 页面添加了<! DOCTYPE html>说明该页面采用了W3C标准，如果不加则页面会根据浏览器自身的解析标准来解析，这可能会导致页面在不同的浏览器呈现出不同的效果。

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@smile-2008 @wenyejie @haizhilin2013 @yxkhaha