On: Java DecimalFormat implemented in JavaScript

[euroclydon]

Why not just use Javascript sprintf?

http://www.diveintojavascript.com/projects/javascript-sprint...

[oskansavli → euroclydon]

As stated in the blog, the Formspider framework had a Java renderer that uses DecimalFormat and we needed the same functionality on the javascript side which means formatting numbers with variable masks such as "$#,#00.0#" or "00.0##%" that is defined by the user. So sprintf is not the same. By the way, this code was wrtiten in 2008.

[huherto → euroclydon]

In the case of currency, it is better to use decimal arithmetic because if you use float numbers the rounding behaves different than doing the same operations by hand or in a calculator. Another option is to use integers (to represent number of cents) and just print the decimal point when displaying the number.

[euroclydon → huherto]

I'm not sure if you're answering my question or not. I've inspected the source of both libraries, and they both use the JS method toFixed().

[huherto → euroclydon]

Never mind, you are right it is just to format decimals.

[serdarbicer → euroclydon]

I'm not sure that it does the same job.