What You Need To Know About JavaScript Scope | How-To | Smashing Magazine
http://www.smashingmagazine.com/2009/08/01/what-you-need-to-know-about-javascript-scope/

What You Need To Know About JavaScript Scope | How-To | Smashing Magazine

In many languages (all the good ones, if you ask me),  lexical scoping is supported. Lexical scoping basically allows you to access local variables in a parent function. If a function is defined within another function, it can access its own local variables as well as those of the function it was defined within. Time for another example.function drinkBeer() { var beer = "Big Daddy IPA"; function pour() { var glass = "Pint Glass"; return "Poured " + beer + " into a " + glass; } function drink() { beer = null; return "Beer is all gone"; } pour(); drink(); } drinkBeer();This works just fine. drinkBeer cannot access glass, but pour and drink can access beer. //// /*<!--<a href="http://justin.harmonize.fm/index.php/2009/09/an-introduction-to-javascripts-this/">Caffeinated Simpleton » Blog Archive » An Introduction to JavaScript’s “this”</a>-->*/

array for lambda function

javascriptのfor文でのtips

JavaScriptでfor文の中でイベントを設定すると全てループ終了時の変数が使われる問題について

Most people that learn JavaScript are coming from a background in another language. This brings with it a view of how the world works that may be different from how it really works in JavaScript. For this and other reasons, JavaScript is often misunderstood. It's not entirely our fault, the language was designed to work like one thing (scheme-like), but look like another (c-like). This article will describe lexical scope and the "this" variable and how to control them rather than be controlled by them when in coding JavaScript.

Everything you ever wanted to know about scopes in Javascript. Closures are key.