如何在同一端口上运行Node Express服务器和Angular？

I am new to Node and Angular. I need to know whether is it possible to run a Node Express app serving as a backend and an Angular frontend on the same port. I followed Angular Quickstart tips on angular.io and created a Node todo application but both are running on different port which raises the issue of Cross Origin Request Blocked Issue.I am new to Node and Angular. I need to know wh