Get AppWeb Lists using a Promises Pattern (or chaining) Allowing for Enrichment/Further Processing

Get AppWeb Lists using a Promises Pattern.js

/* jQuery DOM ready */
$(function() {
	JSRequest.EnsureSetup();

	GetAppWebLists()
		.then(EnrichData)
		.then(RenderAppWebLists)
		.fail(function(error) {
			$(".content-body").html(error).show();
		});
	
});

function GetAppWebLists() {
	var 
		p = new $.Deferred(),
		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);

			/* you might want to mangle or otherwise process the REST results 
			   here before resolving the promise with the data
			 */
			p.resolve(data);
		})
		.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>';
      	p.reject(m);
		});
	return p.promise();
}

function EnrichData(data) {
	$.each(data, function(i,e) {
		e.Title = e.Title + " ("+e.Title.toUpperCase()+")";
	});
	/* either return the data we were passed or return a new Promise and resolve/reject it here */
	return data;
}

function RenderAppWebLists(data) {
	$(".content-body").empty().show();

	$ul = $("<UL/>");
	$.each(data, function(i,e) {
		$ul.append("<li>"+e.Title+"</li>");
	});
	$(".content-body").append("<h2>AppWeb Lists</h2>").append($ul);
	
	/* either return the data we were passed or return a new Promise and resolve/reject it here */
	return data;
}

Sure, the key is the way promises are used to chain functions together, regardless of what those functions do

Thanks. Sorry I missed both you at SharePoint Stat.. I am the chap who 'won' the pebble.