Ff chrome and ie under the global dynamic positioning similarities and differences and global height selection

DTD declared

IE
All the document. The documentElement. ScrollHeight browser content high, the document. The body. All content height scrollHeight browsers
Document. The documentElement. ScrollTop browser scroll part height, document. The body. The scrollTop is always zero
Document. The documentElement. ClientHeight browser height of visible part, document. Body. All content height clientHeight browsers

FF
All the document. The documentElement. ScrollHeight browser content high, the document. The body. All content height scrollHeight browsers
Document. The documentElement. ScrollTop browser scroll part height, document. The body. The scrollTop is always zero
Document. The documentElement. ClientHeight browser height of visible part, document. Body. All content height clientHeight browsers

Chrome
All the document. The documentElement. ScrollHeight browser content high, the document. The body. All content height scrollHeight browsers
Document. The documentElement. ScrollTop always is 0, the document. The body. The scrollTop browser scroll section height
Document. The documentElement. ClientHeight browser height of visible part, document. Body. All content height clientHeight browsers

DTD is not declared

IE
Document. The documentElement. ScrollHeight browser height of visible part, document. Body. All content height scrollHeight browsers
Document. The documentElement. ScrollTop always is 0, the document. The body. The scrollTop browser scroll section height
Document. The documentElement. ClientHeight always is 0, the document. The body. The browser clientHeight highly visible parts

FF
Document. The documentElement. ScrollHeight browser height of visible part, document. Body. All content height scrollHeight browsers
Document. The documentElement. ScrollTop always is 0, the document. The body. The scrollTop browser scroll section height
All the document. The documentElement. ClientHeight browser content high, the document. The body. The clientHeight browser highly visible parts

Chrome
Document. The documentElement. ScrollHeight browser height of visible part, document. Body. All content height scrollHeight browsers
Document. The documentElement. ScrollTop always is 0, the document. The body. The scrollTop browser scroll section height
All the document. The documentElement. ClientHeight browser content high, the document. The body. The clientHeight browser highly visible parts

The height of all the content in the browser is the height of the entire frame of the browser, including the sum of the scrollbar volume part + the visible part + the hidden part at the bottom

The browser scrolls part of the height, that is, the scroll bar rolls away part of the height to see the height of the top from the top of the entire object.

DTD declaration, which refers to the declaration when the browser page is loaded: < ! Public DOCTYPE HTML ""... >

Declare document type HTML