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Doctype声明位于HTML文档的第一行,处于html标签之前,告知浏览器的解析器用什么文档标准解析这个文档
标准模式的排版和js运作模式都是以该浏览器支持的最高标准运行. 在兼容模式中,页面以宽松向后兼容的方式显示,模拟老式浏览器行为以防止站点无法工作
Doctype不存在或格式不正确导致文档以兼容模式呈现
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文档声明的作用
严格模式和混杂模式指什么?
Doctype不存在或格式不正确导致文档以兼容模式呈现
The text was updated successfully, but these errors were encountered: