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jQuery Get Relative Mouse Position

Sam Deering
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jQuery code snippet to get the relative position of the mouse pointer. The function takes in the element id as a parameter and the current x and y co-ordinates of the mouse pointer. It then returns the relative distances between the mouse’s cursors current position and the specified element.

function rPosition(elementID, mouseX, mouseY) {
  var offset = $('#'+elementID).offset();
  var x = mouseX - offset.left;
  var y = mouseY - offset.top;
  return {'x': x, 'y': y};
}

Example Usage

jQuery(document).ready(function($) {

	//get the current x and y of the mouse pointer
	var X = $('body').offset().left;
	var Y = $('body').offset().top;
	mouseX = ev.pageX - X;
	mouseY = ev.pageY - Y;
	
	//get the relative position to the #eid element on the page
	alert(rPosition('eid',x,y));

});