Return parentEl.TaskbarX is a tool that lets you move and place Windows taskbar icons wherever you like. If( typeof parentEl = 'undefined' ) var parentEl = document (a, el) => Math.max(a, el.getBoundingClientRect().right), 0) for simplicity I assume that margin=0 - if not then you should consider this values when calculate pageWidth/Height and pageX/YĬonst contentWidth =.pageWidth - in case when pageWidth is smaller than windowWidth we need to manually calculate size of children elements to get this value (we do example calculation in contentWidth in below solution - but in general this can be difficult for that case).Probably it is impossible to read value of bar/console height to make correction (without some trick like asking user to close that bar/console before measurements.) But it is difficult to calculate that value if download-bottom bar appears in browser and/or if developer console is open on page bottom - in that case this value will be increased of size of that bar/console height in below solution. the screenY - in below solution we add to position of top left browser corner ( window.screenY) the height of its menu/tabls/url bar).

for windowWidth/Height OP don't want to count size of scroll bars so we use.

for screenHeight/Width OP wants to count screen height/width including system menu bar (eg.

center of coordinate system (0,0) is in the viewport (browser window without bars and main borders) top left corner and axes are directed to right and down (what was marked on OP picture) so the values of pageX, pageY, screenX, screenY must be negative (or zero if page is small or not scrolled).

So I carefully analyse OP question (especially picture) and have some remarks I am surprised that question have about 10 years and it looks like so far nobody has given a full answer (with 10 values) yet.

Download taskbarx github