如何使用javascript获取正在运行(或部署)Web应用程序的默认端口号 [英] how to get default port number on which web application is running (or deployed) using javascript

问题描述

我有一个Web应用程序，该应用程序部署在某个端口(例如8085)上，主机名是sample.something.com.使用window.location.host或window.location.port，端口变为空白. 我如何使用javascript检索端口号，有人可以帮助我吗?

I have a web application which is deployed at some port say 8085, and hostname is sample.something.com. Using window.location.host or window.location.port, the port is coming as blank. How can i retrieve the port number using javascript , can anyone help me out?

推荐答案

如果window.location.port为空，则表示该应用程序在http的端口80上运行，而在https的端口443上运行.

If window.location.port is empty that means the application is running on port 80 for http and 443 for https.

如评论中所述，您可以使用window.location.protocol来检查所使用的协议(http或https).

As mentioned in a comment, you can use window.location.protocol to check what protocol is used (http or https).

实施:

function getPort(){
  if(location.port != ''){
      return location.port;
  }
  else if(location.protocol== 'http'){
     return 80;    
  }
  else if(location.protocol== 'https'){
     return 443;    
  }    
}

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