One potential way to compact all the initialization stuff for CPE400's project

init.js

/*
  NOTE: I am hesitant to use this potential design because I think it is harder to read. Since I am working with 2 others
  who don't have the same level of Javascript experience, I think this code may be harder for them to understand.
*/


/*
  initialization.js -- This file defines the things that should be done as soon as the web page initially loads.

  Some things that need to be done at initialization:
    - setup the default routers
    - draw the canvas
 */


let GLOB = {};


(function () {

  function setupDefaultRouters() {
    if (GLOB_topology.hasRouters()) {
      alert("Attempted to reset the global topology to its default routers. Failing out; default routers not set.")
      return;
    }

    GLOB_topology.addRouter(new Router('A', 250, 150));
    GLOB_topology.addRouter(new Router('B', 200, 200));
    GLOB_topology.addRouter(new Router('C', 300, 200));
    GLOB_topology.addRouter(new Router('D', 250, 250));

    GLOB_topology.addEdge('A', 'B');
    GLOB_topology.addEdge('A', 'C');
    GLOB_topology.addEdge('D', 'B');
    GLOB_topology.addEdge('D', 'C');
  }
  
  document.addEventListener('DOMContentLoaded', function() {

    setupDefaultRouters();

    // TODO - draw the canvas

  });
  
})();