JSFiddle - React, Tailwind, and code Playground

JavaScript

(function () { 
	var statusStore = '';
	var trackStore = [];
	var trackingURL = 'https://api.goshippo.com/v1/tracks/fedex/';
	var outTrackNum = $(document.body).find("b:contains('Outgoing Tracking #')")[0];
	var returnTrackNum = $(document.body).find("b:contains('Return Tracking #')")[0];
	var statusDisplay = $(document.body).find("b:contains('Shipment Status')")[0];
	statusDisplay = $(statusDisplay).parent().parent().next();

	outTrackNum = $(outTrackNum).parent().parent().next().html();
	returnTrackNum = $(returnTrackNum).parent().parent().next().html();
	trackStore = [outTrackNum,returnTrackNum]; 

	$(trackStore).each(function(index) {
		$.get(trackingURL + trackStore[index]).done(function(data) {
			if (data.tracking_status == null || data.tracking_status == undefined) {
				statusStore += "<div style='border: 1px solid #ddd; border-radius: 5px; padding: 5px; background: #f0f8ff; margin: 5px;'>";
				if (index == 0) {
		        	statusStore += "<div style='text-decoration: underline; text-align: center;'><b>Outgoing Status</b></div>";
		        } else {
		        	statusStore += "<div style='text-decoration: underline; text-align: center;'><b>Return Status</b></div>";
		        }
				statusStore += "<div style='padding: 5px; text-align: center;'>(No status information available)</div></div>"
			} else {
				//gather delivery status
				var currStatus = data.tracking_status.status_details;
				//gather date info
		        var statusDate = new Date(data.tracking_status.status_date); 
		        statusDate = statusDate.toString().replace(/GMT.*$/,'');     
				//gather ETA
				var currETA = new Date(data.eta); 
				currETA = currETA.toString().replace(/GMT.*$/,'');
		        //gather location info
		        var currLocation = data.tracking_status.location; 
		        var fullLocation = data.tracking_status.location.city;
		        fullLocation += ', ' + data.tracking_status.location.state; 
		        fullLocation += ', ' + data.tracking_status.location.zip; 
		  ...