add-polygon-custom-script.js

const customMapId = 1;

/* An array with objects, each object represents a polygon */
const customPolygonData = [
  	{
      description : "This is an example",
      fillcolor: "#808080",
      linecolor: "#666666",
      lineopacity: "0.5",
      linethickness: "3",
      map_id: customMapId,
      ohfillcolor: "#333333",
      ohlinecolor: "#333333",
      ohopacity: "0.7",
      opacity: "0.5",
      polydata: [
      	{
	        "lat":"41.973052569247955",
    	    "lng":"-120.2621297558594"
        },
        {
        	"lat":"42.03836216459711",
        	"lng":"-114.0218953808594"
        },
        {
        	"lat":"34.16782039785561",
        	"lng":"-113.6703328808594"
        },
        {
        	"lat":"35.32328519432706",
        	"lng":"-115.0765828808594"
        },
        {
        	"lat":"38.69117201150283",
        	"lng":"-119.9984578808594"
        }  
      ],
      polyname: "Example",
      title: "Example",
	}
];

jQuery(function($){
  	$(document.body).on('markersplaced.wpgmza', () => {
   		const map = WPGMZA.getMapByID(customMapId);
      	if(map){
         	for(let i in customPolygonData){
             	const data = customPolygonData[i];
              	const instance = WPGMZA.Polygon.createInstance(data);
				map.addPolygon(instance);
            }
        }
  	});
});