Get AppWeb and HostWeb Lists using the SharePoint 2013 REST API

Get AppWeb and HostWeb Lists.js

// jQuery DOM ready
$(function() {
	JSRequest.EnsureSetup();
	$(".content-body").empty().show();
	getAppWebLists();
	getHostWebLists();
});

function getAppWebLists() {
	var 
		appWeburl = decodeURIComponent(JSRequest.QueryString["SPAppWebUrl"]),
		r = {
			url: appWeburl + '/_api/web/lists',
			type: 'GET',
			headers: { ACCEPT: 'application/json;odata=verbose' }
		};
	$.ajax(r)
		.done(function(response, textStatus, xhrObj) {
			var
				data = (response.value || response.d.results || response.d),
				$ul = $("<UL/>");
			$.each(data, function(i,e) {
				$ul.append("<li>"+e.Title+"</li>");
			});
			$(".content-body").append("<h2>AppWeb Lists</h2>").append($ul);
		})
		.fail(function(xhrObj, textStatus, err) {
			var 
				e = JSON.parse(xhrObj.responseText || "{}"),
				err = e.error || e["odata.error"],
				m = '<div style="color:red;font-family:Calibri;font-size:1.2em;">Exception<br/>&raquo; ' +
                       			((err && err.message && err.message.value) ? err.message.value : (xhrObj.status + ' ' + xhrObj.statusText))
                       			+' <br/>&raquo; '+r.url+'</div>';
         		$(".content-body").append(m);
		});
}
function getHostWebLists() {
	var 
		appWeburl = decodeURIComponent(JSRequest.QueryString["SPAppWebUrl"]),
		hostWeburl = decodeURIComponent(JSRequest.QueryString["SPHostUrl"]),
		requesturl = String.format("{0}/_api/SP.AppContextSite(@target)/web/lists?@target='{1}'", 
											appWeburl, hostWeburl),
		executor = new SP.RequestExecutor(appWeburl),
		r = {
			url: requesturl,
			method: 'GET',
			headers: { Accept: 'application/json;odata=verbose' },
			success: function(response) {
				var 
					data = JSON.parse(response.body || "{}"),
					$ul = $("<UL/>");
				data = (data.value || data.d.results || data.d);
				$.each(data, function(i,e) {
					$ul.append("<li>"+e.Title+"</li>");
				});
				$(".content-body").append("<h2>HostWeb Lists</h2>").append($ul);
			},
			error: function(data, errorCode, errorMessage) {
				var m = String.format('<div style="color:red;font-family:Calibri;font-size:1.2em;">Exception<br/>&raquo; {0}: {1}</div>',
                       					errorCode, errorMessage);
				$(".content-body").append(m);
			}
		};
	executor.executeAsync(r);
}