Written in the head tag to facilitate progressive rendering by the browser (resources downloading->CSSOM+DOM->RenderTree(composite)->Layout->paint). For the specific rendering process, please refer to http://blog.csdn.net/wozaixia... Written after the body tag. Since the browser parses the HTML document line by line, when it parses the style sheet written at the end (external (coupled or written in the style tag) will cause the browser to stop the previous rendering and wait for the loading and parsing of the style sheet to be completed before re-rendering. FOUC may occur under IE in Windows (that is, the page flickering problem caused by style failure)
This is related to the browser crawler. The crawler enters the HTML mode when loading the page. If it is written before the body, the page has not started to be displayed, and the page white screen effect will not appear; if it is written after the body, when crawling to the css code, the crawler enters the css. mode, a white screen may appear.
Generally, styles are placed between the heads. If the style is placed at the bottom. It loads the tags and renders the styles. If it loads slowly, you'll see it dance.
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Written in the head tag to facilitate progressive rendering by the browser (resources downloading->CSSOM+DOM->RenderTree(composite)->Layout->paint). For the specific rendering process, please refer to
http://blog.csdn.net/wozaixia...
Written after the body tag. Since the browser parses the HTML document line by line, when it parses the style sheet written at the end (external (coupled or written in the style tag) will cause the browser to stop the previous rendering and wait for the loading and parsing of the style sheet to be completed before re-rendering. FOUC may occur under IE in Windows (that is, the page flickering problem caused by style failure)
Written at the end is to load the body first and then the style - what difference can there be? .
Writing it at the back may cause FOUC, it is better to write it at the front
Loading order, the front is loaded before the body, the last is loaded after the body is loaded, and then loaded
This is related to the browser crawler. The crawler enters the HTML mode when loading the page. If it is written before the body, the page has not started to be displayed, and the page white screen effect will not appear; if it is written after the body, when crawling to the css code, the crawler enters the css. mode, a white screen may appear.
Generally, styles are placed between the heads. If the style is placed at the bottom. It loads the tags and renders the styles. If it loads slowly, you'll see it dance.