web api instance property
Element: clientHeight property
The clientHeight read-only property of the Element interface is zero for elements with no CSS or inline layout boxes; otherwise, it’s the inner height of an element in pixels. It includes padding but excludes borders, margins, and horizontal scrollbars (if present).
clientHeight can be calculated as: CSS height + CSS padding - height of horizontal scrollbar (if present).
When clientHeight is used on the root element (the <html> element), (or on <body> if the document is in quirks mode), the viewport’s height (excluding any scrollbar) is returned.
Value
An integer.
Examples

Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.