<pedrocorreia.net ⁄>
 

<arguments: A JavaScript Oddity ⁄ >




clicks: 3156 3156 2008-11-11 2008-11-11 goto programacao myNews programacao  Bookmark This Bookmark This


arguments is the name of a local, array-like object available inside every function. It's quirky, often ignored, but the source of much programming wizardry; all the major JavaScript libraries tap into the power of the arguments object. It's something every JavaScript programmer should become familiar with.

Inside any function you can access it through the variable: arguments, and it contains an array of all the arguments that were supplied to the function when it was called. It's not actually a JavaScript array; typeof arguments will return the value: "object". You can access the individual argument values through an array index, and it has a length property like other arrays, but it doesn't have the standard Array methods like push and pop.



este s 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://www.sitepoint.com/blogs/2008/11/11/arguments-a-javascript-oddit...




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: 17306 17306 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: 17092 17092 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: 28061 28061 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: 16977 16977 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: 17212 17212 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: 16686 16686 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: 17346 17346 2012-05-11 2012-05-11 goto url (new window) codingcookies.c... goto myNews programacao


Gettings to know Backbone.ks new ...

In this series, we're going to learn how to build a fully functional contacts manager using Backbone (...)

clicks: 16023 16023 2012-05-10 2012-05-10 goto url (new window) net.tutsplus.co... goto myNews programacao