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  button 點擊取得座標
img src=""



                @import "compass/css3";

button {
  padding: 10px;
  color: #333;

img {
  margin: 50px;
  width: 400px


                function getPosition (element) {
  var x = 0;
  var y = 0;
  // 搭配上面的示意圖可比較輕鬆理解為何要這麼計算
  while ( element ) {
    x += element.offsetLeft - element.scrollLeft + element.clientLeft;
    y += element.offsetTop - element.scrollLeft + element.clientTop;
    element = element.offsetParent;
  return { x: x, y: y };

$('button').on('click', function () {
  var elem = document.querySelector('img');
	var position = getPosition(elem);
	alert("座標: " + position.x + ', ' + position.y);