A few months back I created a little Javascript library which is a starting point for doing technical analysis using Javascript. Actually it is technically straight Ecmascript. I had recently downloaded the Google Chrome browser and seen how fast Javascript can be and also noticed the trend toward a faster Javascript engine in other browsers. This prompted me to think that perhaps Technical Analysis work, which has usually been done on the server using C++, Java, C#, etc, can possibly be done in the browser.
Anyhow, I released the code at Google Code. The URL is: http://code.google.com/p/js-ta/
The latest release now contains what I feel are the most important lower level indicators that can serve as building blocks for more complex indicators, but are also very useful on their own:
- Exponential Moving Average
- Simple Moving Average
- Linear Regression
- Running Sum
- Rate of Change
I am now using this handy little library at my pet project site
ETFtable.com for creating comparitive trend and performance data points that can be sorted and filtered by for all U.S. listed ETFs.
Next release, I plan to change the algorithm for Linear Regression to make it faster, add some additional indicator functions, and create some documentation.
If you check it out and have any ideas to improve it, please let me know.