Async JavaScript: Build More Responsive Apps with Less Code by Trevor Burnham

By Trevor Burnham

With Async javascript, youll enhance a deeper knowing of the javascript language. Youll begin with a ground-up primer at the javascript occasion version - key to heading off some of the commonest error javascripters make. From there youll see instruments and layout styles for turning that conceptual realizing into sensible code.
The recommendations within the publication are illustrated with runnable examples drawn from either the browser and the Node.js server framework, incorporating complementary libraries together with jQuery, Backbone.js, and Async.js.

Show description

Read or Download Async JavaScript: Build More Responsive Apps with Less Code PDF

Similar tablets & e-readers books

RubyMotion

Make appealing apps with attractive code: use the based and concise Ruby programming language with RubyMotion to write down really local iOS apps with much less code whereas having extra enjoyable. you will research the necessities of making nice apps, and through the top of this ebook, you will have equipped a completely practical API-driven app.

Unboxing Android USB: A Hands-On Approach with Real World Examples

When you are a multimedia developer on Android platform you would like USB for media move or playback audio. This publication explores MTP and USB Audio in either USB machine and USB host mode. when you are an center developer who paintings on charging you want to comprehend USB charging specification that's defined within the e-book, while you are a networking developer drawn to tethering, USB performs a job utilizing RNDIS specification that is defined within the booklet when you are an software developer attracted to coping with USB units in from an Android platform, this booklet explores Android USB carrier framework which manages USB functionalities final no longer the least, Android Debug Bridge (ADB) the debugging software of Android is over USB and data of its internals is a outline price upload for any program or platform developer.

The Ultimate Guide To Android App Flipping: How You Can Make Full Time Passive Income Flipping Android Apps in 2015 And Beyond

Pricey fellow entrepreneur,Do you're employed a nine to five and want you'll determine how to cease wasting precious time week after week within the rat race? have you ever attempted increase a passive source of revenue long ago merely to discover that the majority earn a living on-line strategies are all simply an identical rehashed tools that don’t bring effects?

Beginning Hybrid Mobile Application Development

This present day, a cellular gadget person prefers put in software over looking net; e. g. reserving cab, procuring motion picture tickets, looking at you tube movies and so on. marketplace percentage of cellular units in accordance with android, iOS & home windows cellphone is significant. developing an installable program concentrating on those a number of units contains an excessive amount of of ache due to services required e.

Additional resources for Async JavaScript: Build More Responsive Apps with Less Code

Example text

And if the cycle is synchronous, the result will be a stack overflow, like we saw in Synchronicity, on page 22. Yet oftentimes, a cycle of change events is exactly what we want. The most common case is a two-way binding, where two models have interrelated values. Suppose we want to ensure that x always equals 2 * y. info report erratum • discuss Chapter 2. set({value: 2 * yVal}); }); You might expect this code to lead to an infinite loop the moment the value of x or y is changed. But actually, it’s quite safe, thanks to two safeguards in Backbone.

The second safeguard presents gotchas of its own. Suppose a change is made to a model that results in a second change to the same model. Because the second change is “nested” in the first one, it’ll occur silently. Observers won’t have a chance to respond to it. Clearly, maintaining two-way data bindings in Backbone is a challenge. js, takes a different approach: two-way bindings are declared explicitly. When one value changes, the other is updated asynchronously from a timeout event. So, until that event fires, the application’s data may be in an inconsistent state.

Me: Good point. Anything else? Mr. Ajax: Hey, I noticed that there’s some code duplication between those two callbacks! You could move that into a third always callback. Me: (impatiently) Alright, I’ll refactor them. Tell you what: why don’t you run now, and I’ll give you the callbacks later? Mr. Ajax: (irately) What do I look like, an EventEmitter? 5 changed Mr. Ajax’s need-it-now attitude. post) now return Promises. A Promise is an object that represents a task with two possible outcomes (success or failure) and holds callbacks that fire when one outcome or the other has occurred.

Download PDF sample

Rated 4.74 of 5 – based on 49 votes