Understanding MVC And MVP (For JavaScript And Backbone Developers) Last updated: 16th Jan, 2012. Before exploring any JavaScript frameworks that assist in structuring applications, it can be useful to gain a basic understanding of architectural design patterns. Design patterns are proven solutions to common development problems and can suggest structural paradigms to help guide us in adding some organization to our application. I think patterns are exciting as they're effectively a grass roots effort that build upon the collective experience of skilled developers who have previously faced similar problems as we do now.
Although developers 10 or 20 years ago may not have been using the same programming languages for implementing patterns, there are many lessons we can learn from their efforts. In this section, we're going to review two popular patterns – MVC and MVP. The context of our exploration will be how these patterns are related to the popular JavaScript framework Backbone.js, which will be explored in greater detail later on. Smalltalk-80 MVC Models.
Prototype. Dom. Editor. SetTimeout: how to get the shortest delay. Samaxesjs - Google Code. Memory leak patterns in JavaScript. JavaScript is a powerful scripting language used to add dynamic content to Web pages. It is especially beneficial for everyday tasks such as password validation and creating dynamic menu components. While JavaScript is easy to learn and write, it is prone to memory leaks in certain browsers. In this introductory article we explain what causes memory leaks in JavaScript, demonstrate some of the common memory leak patterns to watch out for, and show you how to work around them.
Note that the article assumes you are familiar with using JavaScript and DOM elements to develop Web applications. The article will be most useful to developers who use JavaScript for Web application development. Memory leaks in JavaScript JavaScript is a garbage collected language, meaning that memory is allocated to objects upon their creation and reclaimed by the browser when there are no more references to them. What's wrong with circular references? Listing 1. Another memory leak pattern Listing 2. Back to top. TOOL: Curve Explorer. FaT - Focus at This. JavaScript Optimization. Mininova labs. The XMLHttpRequest Object. Abstract The XMLHttpRequest specification defines an API that provides scripted client functionality for transferring data between a client and a server.
Status of this Document This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at This document is published as a snapshot of the XMLHttpRequest Living Specification. If you wish to make comments regarding this document in a manner that is tracked by the W3C, please submit them via using our public bug database, or please send comments to public-webapps@w3.org (archived) with [XHR] at the start of the subject line. The W3C Web Applications Working Group is the W3C working group responsible for this specification's progress along the W3C Recommendation track.
Work on this specification is also done at the WHATWG. The. Javascript Object Tree Favelet. Looking for the drawings? They're over here, and my drawing blog is this way. Prototype Javascript Windows.