JavaScript: execute async function one by one

JavaScript: execute async function one by one

References

Reference NO 1

http://stackoverflow.com/questions/13583280/javascript-execute-async-function-one-by-one

Reference NO 2

http://stackoverflow.com/questions/4234619/how-to-avoid-long-nesting-of-asynchronous-functions-in-node-js

Reference NO 3

http://www.niagara-central.com/ord?portal:/blog/BlogEntry/264

Reference NO 4

http://sporto.github.io/blog/2012/12/09/callbacks-listeners-promises/

Reference NO 5

https://github.com/caolan/async

Reference NO 6

http://www.mobl-lang.org/283/reducing-the-pain-synchronous-asynchronous-programming/

Reference NO 7

http://msdn.microsoft.com/en-us/library/windows/apps/hh700330.aspx

Reference NO 8

http://www.html5rocks.com/en/tutorials/async/deferred/