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前端面试题及其总结
source link: https://juejin.im/post/5c5ab7dae51d4501333fc60f
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HTML部分 1、Doctype作用？标准模式与兼容模式有什么区别？ 声明位于HTML文档的第一行，处于标签之前。用来告知浏览器的解析器用什么文档标准解析这个文档。DOCTYPE不存在或格式不正确会导致文档以兼容模式呈现 标准模式：排版和js运作方式都是
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