toString and valueOf truncates trailing 0s after decimal

Question

In javascript, I\'ve noticed that toString and valueOf truncates trailing 0s after a decimal. For example:

var num = 0.00
var num2 = 0.0100

num.valueOf() or         


        

Answer 1

A number in javascript does not have trailing zeros- if it could, where would you stop? That is normal behavior. You can force them to appear if you return a string-

var n= '0.0'
alert(n)>> 0
alert(n.toFixed(5))>> '0.00000'
alert(n.toPrecision(5))>>'0.0000'