Feb 13, 2010 · The parameter to the handler function (the "Event" object) has "pageX" and "pageY" values. Do the math with those and the "position()" or "offset()" for your img element (whichever works better; I find it really confusing to predict which of …

This JavaScript technique can be used for many effects, including tooltips and image maps.

The GetCoordinates function uses the window.event method to find the coordinates of the mouse when it is clicked. It also needs to take into account any scrolling and the position of the image inside the document so that the coordinates are always relative to the top left of the image.

Canvas Coordinates. The HTML canvas is a two-dimensional grid. The upper-left corner of the canvas has the coordinates (0,0). Mouse over the rectangle below to see its x and y coordinates:

Most JavaScript methods deal with one of two coordinate systems: Relative to the window – similar to position:fixed, calculated from the window top/left edge. we’ll denote these coordinates as clientX/clientY, the reasoning for such name will become clear later, when we …

Learning about coordinates in JavaScript helps you do lots of fun and useful things on websites, like moving things around or making them react to users. This guide showed you how to work with different types of coordinates and how to use them to move elements on a webpage.

Dec 1, 2012 · Divide the linear position by the width. That's your Y-coordinate. Multiply that Y-coordinate by the width, and subtract that value from the linear position. The result is the X coordinate. Also note, you will have to divide the linear position by 4 since it is RGBA.

Apr 5, 2023 · You can use the element.getBoundingClientRect () function to measure the position of an element in JavaScript. This function returns an object with eight properties: top, right, bottom, left, x, y, width, and height. These properties tell you the position and size of the element relative to the viewport:

This code lets you grab the X,Y coordinates of any point of any image using jQuery and JavaScript. It can be useful for allowing users to crop their own images, tag friends in photos, or other similar applications.

May 5, 2025 · Circle image will have the coordinates x,y,r where x,y are the coordinates of the center of the circle and r is the radius of the circle. Polygon image will have the coordinates x1,y1,x2,y2,x3,y3,x4,y4,,……. where x,y defines the coordinates of one of the corners of the image as shown in the image.