<strong>What is the correct way to declare an HTML5 Doctype.</strong> <strong>为什么在doctype后面加上html就会报错，仅仅写 …</strong>
HTML文件里开头的!Doctype有什么作用？_天心天地生的 ...
WebApr 2, 2024 · :用来存放头部元素,例如: ,WebMay 15, 2024 · This declaration is an instruction to the web browser about what version of HTML the page is written in. The presence of this tag assures that document author has followed the html standard. Historically,the Doctype declaration was used in HTML when it was defined as a language based on SGML, and later, on XML. bishop lynch high school alumni
JavaScript HTML DOM - Exercises, Practice, Solution - w3resource Do I need a !DOCTYPE declaration in a php file with html? HTML 5 标签 - w3schoolbishop lynch football stadium