The Floating-Point Guide - Floating-point cheat sheet for JavaScript

Floating-Point Types JavaScript is dynamically typed and will often convert implicitly between strings and floating-point numbers (which are IEEE 64 bit values). To force a variable to floating-point, use the global parseFloat() function. var num = parseFloat("3.5"); Decimal Types The oldest decimal type for JavaScript seems to be a port of Java’s BigDecimal class, which also supports rounding mod