![]() ![]() What we want to do is figure out the exact click position when youĬlick anywhere inside the yellow container:įirst, we have the event listener setup to listen for aĬlick event: yellowContainer. In that thread, let's start by looking at a seeminglyįine approach that seems like it should give us the exact position of Then we subtract that from the event.clientX and event.clientY properties that have the mouse coordinates of the screen that we clicked on. Definition and Usage The screenY property returns the vertical screen coordinate of the mouse pointer when a mouse event occurs. The coordinates of the mouse pointer when the mouse button is clicked: let x event.screenX // Horizontal. We call canvas.getBoundingClientRect to get the rect object, which has the left and top properties to get the x and y coordinates of the top-left corner. Pointing thing! A Worthy (But Incomplete) AttemptĪ great way to learn is by understanding why something doesn't work To get the current position of the mouse in JavaScript, add a mousemove event listener to the window object and access the clientX and clientY properties of the MouseEvent object in the listener to get the X and Y coordinates of the mouse respectively. The coordinates of the mouse pointer when the mouse button is clicked: let x event.screenX // Horizontal let y event.screenY // Vertical Try it Yourself More examples below. Here works on a touch device where a stylus or your finger is the "mouse" and "click" will appear often, just know that everything I show Show mouse position on hover with pixel and latitude and longitude coordinates. In this tutorial, I will explain the magic behind figuring out theĮxact pixel coordinates of where a click occurred. Something you may find yourself needing to do is figuringĪn example where knowing the exact click position isĬlick anywhere inside the gray box to see the red circle move to the Mouse (or another pointing device like a stylus or finger). ![]() Let elem = document.For all sorts of interactive doo-dads you will beĬreating, chances are you will be making heavy use of the Here’s the picture of elem.getBoundingClientRect() output: pageX and event.pageY in combination with the jQuery offset() method to get the position of mouse pointer relative to an element. You can get the users mouse coordinates in three distinct ways in JavaScript: Relative to the browser window. Suprisingly I forgot how to get the X and Y coordinates of mouse. If you scroll the page and repeat, you’ll notice that as window-relative button position changes, its window coordinates ( y/top/bottom if you scroll vertically) change as well. Yesterday while working on a script and I wanted to know the cursor X, Y coordinates. left/right – X-coordinate for the left/right rectangle edge.įor instance click this button to see its window coordinates:.top/bottom – Y-coordinate for the top/bottom rectangle edge,.width/height – width/height of the rectangle (can be negative).Īdditionally, there are derived properties:. ![]() x/y – X/Y-coordinates of the rectangle origin relative to window,.The method elem.getBoundingClientRect() returns window coordinates for a minimal rectangle that encloses elem as an object of built-in DOMRect class. If isDrawing is true, the event handler calls the drawLine function to draw a line from the stored x and y values to the current location. As the mouse moves over the page, the mousemove event fires. clientY – window-relative coordinate did change (the arrow became shorter), as the same point became closer to window top.Įlement coordinates: getBoundingClientRect First we store the x and y coordinates of the mouse pointer in the variables x and y, and then set isDrawing to true.pageY – document-relative coordinate stayed the same, it’s counted from the document top (now scrolled out). ![]()
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