返回当前 URL 的主机名和端口

  1. <!DOCTYPE html>
  2. <html>
  3. <body>
  4.  
  5. <h1>window.location 对象</h1>
  6.  
  7. <p id="demo"></p>
  8.  
  9. <script>
  10. document.getElementById("demo").innerHTML = 
  11. "页面主机名是：" + window.location.hostname;
  12. </script>
  13.  
  14. </body>
  15. </html>