There is a reason why we have given this much height to this div element. Inside the body tag, we have a div element with some text and a height of 1000px. How to stick text to moving objects: Text tracking tutorial in Premiere Pro Let’s understand both these ways with the below example. Tracking Mouse Position Using PageX, PageY, and clientX, clientY in JavaScript If you want to track mouse position based on the screen’s visible area, use clientX and clientY.
If you want to track mouse positions relative to the size of the webpage, use pageX and pageY.There are two different ways of getting these x and y positions of the mouse within the browser’s tab, and these ways are as follows. If you move the mouse horizontally, its x position will change, and if you move the mouse vertically, its y position will change. You might be aware that the top-left corner of the browser is represented with (0,0). To track the mouse position, we have to find its x-axis (horizontal position) and y-axis (vertical position) inside the browser’s tab. Various Ways of Tracking Mouse Events in JavaScript To see a full list of mouse events, you can visit the Mouse Events MDN docs. There are various mouse events available in JavaScript, out of which we will be focusing on the mousemove event as we want to track mouse position. For example, a mousedown event is only triggered when a user clicks on the mouse button. An event listener is something that keeps on listening for the changes which are happening. To track mouse movement in JavaScript, we make use of an event listener. Tracking Mouse Position Using PageX, PageY, and clientX, clientY in JavaScript.
Various Ways of Tracking Mouse Events in JavaScript.I'd recommend only computing those once, which is why they are not in the getMouse function.įor mouse position, I usually use jQuery since it normalizes some of the event attributes.JavaScript JavaScript MouseEvent JavaScript Mouse Position They will mess up mouse coordinates and this fixes that
Some pages have fixed-position bars (like the stumbleupon bar) at the top or left of the page StyleBorderTop = parseInt((canvas, null), 10) || 0 StyleBorderLeft = parseInt((canvas, null), 10) || 0 StylePaddingTop = parseInt((canvas, null), 10) || 0 They are: stylePaddingLeft = parseInt((canvas, null), 10) || 0 You'll notice that I use some (optional) variables that are undefined in the function. We return a simple javascript object with x and y defined OffsetY += stylePaddingTop + styleBorderTop + htmlTop OffsetX += stylePaddingLeft + styleBorderLeft + htmlLeft This part is not strictly necessary, it depends on your styling Also add the offsets in case there's a position:fixed bar (like the stumbleupon bar) Add padding and border style widths to offset takes an event and a reference to the canvasįunction getMouse = function(e, canvas) while ((element = element.offsetParent)) we have to worry about padding and borders If you wanna be super-correct this can be tricky, set to the mouse position relative to the state's canvas It works on all browsers will all manner of padding, margin, border, and add-ons (like the stumbleupon top bar) // Creates an object with x and y defined, I'll share the most bulletproof mouse code that I have created thus far.
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