* A webpage loading is mainly HTML + CSS + JS
JS: Mainly guarantee the dynamic effect of the webpage.
CSS: Ensure the layout of the page effect.
HTML: Mainly the text information on the webpage is
pure HTML webpage effect
*HTML是什么？
Hyper Text Markup Language (Hyper Text Markup Language) can be compatible with some pictures, music, non-text files.
HTML structure and grammar
begin and end. It is mainly composed of head and body. Head controls the small tags of the page, and body controls the content of the web page. The
HTML file is composed of HTML elements. <****> *** can be tag attributes or event attributes.
* Common elements in HTML
Form:
Inline frame:
*HTML和DOM树形结构又什么关系？
Convert HTML files into DOM tree structure, understand page elements more intuitively, and perform arbitrary operations on HTML through JS
