Example of rounding problem that preserves n-digit decimal places

This article describes the rounding problem of JS implementing the n-digit decimals. Share it for your reference, as follows:

 //The number is rounded (retaining n-digit decimal places) getFloat = function (number, n) { n = n ? parseInt(n) : 0; if (n <= 0) return Math.round(number); number = Math.round(number * Math.pow(10, n)) / Math.pow(10, n); return number; };/*//Usage example: alert(getFloat(2.085,2));//Get 2.09*/

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