打开输出流 (新窗口打开; about:blank),添加文本，然后关闭输出流 - 在线编辑器

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function createDoc() {
      var w = window.open();
      w.document.open();
      w.document.write("<h1>Hello World!</h1>");
      w.document.close();
    }
  </script>
</head>
<body>

  <input type="button" value="新窗口的新文档" onclick="createDoc()">

</body>
</html>
​x
 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>蜜蜂教程(mifengjc.com)</title>
  <script>
    function createDoc() {
      var w = window.open();
      w.document.open();
      w.document.write("<h1>Hello World!</h1>");
      w.document.close();
    }
  </script>
</head>
<body>
​
  <input type="button" value="新窗口的新文档" onclick="createDoc()">
​
</body>
</html>