<pedrocorreia.net ⁄>
 

<ECMAScript 5 Strict Mode, JSON, and More ⁄ >




clicks: 2806 2806 2009-11-11 2009-11-11 goto programacao myNews programacao  Bookmark This Bookmark This


Previously I analyzed ECMAScript 5's Object and Property system. This is a huge new aspect of the language and deserved its special consideration.

There are a number of other new features and APIs that need attention, as well. The largest of which are Strict Mode and native JSON support.

Strict Mode

Strict Mode is a new feature in ECMAScript 5 that allows you to place a program, or a function, in a "strict" operating context. This strict context prevents certain actions from being taken and throws more exceptions (generally providing the user with more information and a tapered-down coding experience).

Since ECMAScript 5 is backwards-compatible with ECMAScript 3, all of the "features" that were in ECMAScript 3 that were "deprecated" are just disabled (or throw errors) in strict mode, instead.



este é só um excerto do artigo, para aceder ao artigo completo, clique no link em baixo:
this is just a small excerpt from the article, to access the full article please click in the link below:

http://ejohn.org/blog/ecmascript-5-strict-mode-json-and-more/




Subscribe News RSS  Subscribe News Updates by E-mail





myNews <myNews show="rand" cat="programacao" ⁄>

RouterJs: easy routing for your ajax Web applications new ...

RouterJs is a simple router for your ajax web apps. It's build upon History.js which means that Rout (...)

clicks: 17027 17027 2012-05-14 2012-05-14 goto url (new window) haithembelhaj.g... goto myNews programacao


Backbone computed properties new ...

This gist shows one way to implement read- and write-enabled computed properties on a Backbone Model (...)

clicks: 16837 16837 2012-05-13 2012-05-13 goto url (new window) https://gist.gi... goto myNews programacao


HTML5 jQuery Paint Plugin new ...

Websanova Paint is a HTML5 canvas based jQuery plugin. It allows you to free paint on a canvas area (...)

clicks: 27723 27723 2012-05-12 2012-05-12 goto url (new window) websanova.com/t... goto myNews programacao


Create Instagram Filters With PHP new ...

In this tutorial, I'll demonstrate how to create vintage (just like Instagram does) photos with PHP (...)

clicks: 16642 16642 2012-05-12 2012-05-12 goto url (new window) net.tutsplus.co... goto myNews programacao


Android Query new ...

Android-Query (AQuery) is a light-weight library for doing asynchronous tasks and manipulating UI el (...)

clicks: 17004 17004 2012-05-12 2012-05-12 goto url (new window) code.google.com... goto myNews programacao


Sass vs. LESS vs. Stylus: Preprocessor Shootout new ...

CSS3 preprocessors are languages written for the sole purpose of adding cool, inventive features to (...)

clicks: 16313 16313 2012-05-11 2012-05-11 goto url (new window) net.tutsplus.co... goto myNews programacao


Real-time Applications With Node.js and Socket.IO new ...

Hey everyone! Sorry about the long pause since the last blog post, life has been quite hectic for th (...)

clicks: 16997 16997 2012-05-11 2012-05-11 goto url (new window) codingcookies.c... goto myNews programacao


15 Handpicked jQuery Drop Down Menus Tutorials new ...

Here we are presenting another brilliant collection of 15 jQuery navigation menu that you can downlo (...)

clicks: 15943 15943 2012-05-10 2012-05-10 goto url (new window) smashingapps.co... goto myNews programacao