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테크노트/html

HTML doctype tag 선언 방법 (html 4.01, xhtml 1.0, html 5)

by 테크한스 2022. 1. 25.

html 4.01 : 안정된 표준의 HTML의 버전이다. 이 버전에서는 CSS(Cascading Style Sheet)로 디자인적인 요소를 구분하게 되고, HTML로는 웹페이지의 전반적인 구조만을 명시하는 것을 원칙

 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">

 

추천 doctype 은 

 

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

xhtml 1.0 : XML과 HTML을 합성하여 더 확장된 태그를 사용할 수 있으며, 문법은 정확히 지켜지지 않는다면 표현되지 않도록 문법 검사를 엄격하게 적용하였다. 이 새로운 웹의 표준이 XHTML이다.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">

추천 doctype 은

 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 

html 5 : W3C가 XHTML을 표준에서 탈락시키게 되고, WHATWG에서 정의한 표준을 따르기로 한다. 결론적으로 HTML5와 CSS3가 표준으로 확정되게 되고, 지금의 HTML5 표준이 완성

  <!DOCTYPE html>

 

 

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