![]() ![]() Where zoom = documentElement.clientWidth / window.innerWidth Many browsers make it the same as page or client Chrome makes it relative to the screen BUT IN CSS PIXELS, and for vertical measurements you have to subtract the toolbars as well. ScreenX/Y = clientX/Y * devicePixelRatio * zoom, In JavaScript: pageX, pageY, screenX, screenY, clientX and clientY returns a number which indicates the number of physical pixels a point is from the reference. ![]() screen Very old defintion: relative to the screen, in device pixels. The screenX property retrieves the position of the mouse in physical pixel size in Firefox, Opera, Google Chrome, Safari and in Internet Explorer earlier than version 8, while from version 8, it returns the position in logical pixel size. Yes, the side screens aren't as high quality as the center screen, because they're using short throw projectors by the ceiling, but if you sit about 3/4 back, you can see them well in your peripheral vision, while still maintaining focus on the main action of the center screen. I calculate the expected positions as follows: page Relative to the document client Old definition: relative to the visual viewportĬlientX/Y = pageX/Y - window.pageX/YOffset New definition: relative to the layout viewportĬlientX/Y = pageX/Y - ().left/top What changed here in Chromium 40/Edge is not so much the definition of clientX/Y, but of getBoundingClientRect(), probablyīecause the layout viewport as a separate scrollable layer was introduced. ![]() This test interprets the coordinates as page coordinates (i.e. screenX/Y: the coordinates of the mouse position relative to the screen PageX/Y: Relative to the edge of the document (including the scroll bar distance) ClientX/Y: relative to the current page and does not include the scroll bar distance OffsetX/Y: Relative to the current element (block or inline block), no border is included except safari. shiftKey: Returns whether the “SHIFT” key is pressed when a key event is triggered.Įvent.pageX: Returns the position of the mouse pointer relative to the document’s horizontal coordinate.Įvent.pageY: Returns the position of the mouse pointer relative to the document’s vertical coordinate.Click on the page to set the three test layers.ctrlKey: Returns whether the “CTRL” key is pressed when a key event is triggered.altKey: Returns whether the “ALT” key is pressed when a key event is triggered.event.pageY: Returns the vertical coordinate of the mouse pointer relative to the document when the mouse event is triggered.I calculate the expected positions as follows: page Relative to the document client Old definition: relative to the visual viewport clientX/Y pageX/Y - window. This test interprets the coordinates as page coordinates (i.e. clientX/Y pageX/Y screenX/Y Zoom factor: 100. event.pageX:Returns the horizontal coordinate of the mouse pointer relative to the document when the mouse event is triggered. Click on the page to set the three test layers.event.clientY:Returns the vertical coordinate of the mouse pointer relative to the current window when the mouse event is triggered.event.clientX: Returns the horizontal coordinate of the mouse pointer over the current window when the mouse event is triggered.event.timeStamp: Indicates the time that indicates when the event occurred.The buttons:read-only property indicates which buttons are pressed on the mouse (or other input device) when the event is triggered. ![]() button: The read-only property indicates which mouse button is pressed to trigger the event. JavaScript Event pageX, pageY The Event interface represents any event that occurs in the DOM Some are generated by the user (such as mouse or keyboard events), others are produced by APIs (such as events that show whether an animation is working, videos are paused).You want to know how much of the document has already been scrolled up, whatever zoom state it’s in. These properties are measured in CSS pixels, too. Thus you can find out how much the user has scrolled. event.target: Returns the element that triggered the event. window.pageXOffset and window.pageYOffset, contain the horizontal and vertical scrolling offsets of the document.event.currentTarget: The event listeners return the item that triggered the event.event.type: Returns the name of the event type when it is triggered.The event itself includes features and methods common to all events. There are many types of events, some of which use other interfaces based on the main Event interface. The Event interface represents any event that occurs in the DOM Some are generated by the user (such as mouse or keyboard events), others are produced by APIs (such as events that show whether an animation is working, videos are paused). ![]()
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