<html><body><h2 onclick="showCoords(event)">单击此标题可获取单击鼠标指针时的 x（水平）和 y（垂直）坐标。</h2><p><b>提示：</b>请尝试单击标题中的不同位置。</p><p id="demo"></p><script>function showCoords(event) { var x = event.clientX; var y = event.clientY; var coords = "X coords: " + x + ", Y coords: " + y; document.getElementById("demo").innerHTML = coords;}</script></body></html>