把窗口相对其当前位置移动250个像素 - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function openWin() {
      myWindow = window.open('', '', 'width=200,height=100');
      myWindow.document.write("<p>这是我的窗口</p>");
    }

    function moveWin() {
      myWindow.moveBy(250, 250);
      myWindow.focus();
    }
  </script>
</head>
<body>

  <input type="button" value="打开我的窗口" onclick="openWin()" />
  <br><br>
  <input type="button" value="移动我的窗口" onclick="moveWin()" />

</body>
</html>
        