Nodejs Float Round decRound(num, decimals)

Method Source Code

// create empty class for adding static methods not in the Math Object
function MyMath () {}

// new static round method with decimal specification
MyMath.decRound = function(num, decimals){
    return Math.round(num*Math.pow(10,decimals))/Math.pow(10,decimals);
}

Related

1. roundTo(num, dec)

   Math.roundTo = function (num, dec) {
     return Math.round(num * Math.pow(10, dec)) / Math.pow(10, dec);
   };
   

2. round(value)

   Util.round = function(value) {
     return new Number((new Number(value)).toFixed(2));
   };
   

3. roundTo (num, to)

   Math.ceilTo = function roundTo (num, to) {
       if (num < to) {
           return to;
       var amount = to * Math.ceil(num / to);
       if (amount === 0) {
           amount = to;
       return amount;
   ...
   

4. roundTo(num, to)

   Math.roundTo = function roundTo (num, to) {
       if (num < to / 2) {
           return 0;
       var amount = to * Math.round(num / to);
       if (amount === 0) {
           amount = to;
       return amount;
   ...
   

5. $round(fractionalDigits)

   Number.prototype.$round = function(fractionalDigits) {
       return parseFloat(this.toFixed(fractionalDigits));
   };
   

6. ToRound(digits)

   Number.prototype.ToRound = function (digits) {
       if (digits < 0 || digits > 10)
           return this;
       var pow10 = Math.pow(10, digits);
       return Math.round(this * pow10) / pow10;
   };
   

7. round()

   Number.prototype.round = function() {
     return Math.round(this);
   };
   

8. round()

   Number.prototype.round = function() {
     return Math.round(this);
   };