tool

stylecop

 http://requirejs.org/

http://www.dyn-web.com/tutorials/obj_lit.php

 http://pietschsoft.com/post/2008/10/14/JavaScript-Gem-Null-Coalescing-using-the-OR-Operator.aspx

http://stackoverflow.com/questions/476436/null-coalescing-operator-for-javascript

 http://stackoverflow.com/questions/1140089/how-does-an-anonymous-function-in-javascript-work

http://news.cnblogs.com/n/163147/

 http://benalman.com/news/2010/11/immediately-invoked-function-expression/

http://www.novogeek.com/post/ECMAScript-5-Strict-mode-support-in-browsers-What-does-this-mean.aspx

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

anonymous function:because the function is anonymous, so it has no name to execute it.

so put it inside brackets as a expression, then we can regard it as a function to call.

such as

　　function(msg){alert('ha');}---->anonymous function

　　function(msg){}('ha');------>invoke the function

　　but the browser will confuse the function as a function declaration.

　　so we wrap it inside the brackets as expression.

　　(function(msg){})-->then we can call it.

　　(expression)();