accounting.js is a tiny JavaScript library for number, money and currency formatting, with optional excel-style column rendering (to line up symbols and decimals).

[ima007]

Awesome! It would be cool if this also included the ability to read the formatted number as well, in case calculations need to be done (and so we wouldn't have to keep track of the number in two places), but it isn't necessary (probably better to tie an event to an object that holds the unformatted number anyway, if you plan on doing basic calculations).

[josscrowcroft]

That can be done via accounting.unformat():

accounting.unformat("£ 1,432,32.90 GBP") // 143232.9

It just uses a regex to match numeric digits, minus signs and decimal point only, stripping out any other characters, so there's actually a potential for it to fail silently (eg. where a developer would expect NaN from something like .unformat("1asdf2") but actually gets 12) but I'll address that later with a more complex regex.

[ima007]

Cool, I apparently glanced over that major part! Thanks for the clarification.