Nodejs Float Round round(decimals)return round(this,decimals);}

Method Source Code

/**/*w  w w  . java2s  . c  o  m*/
 * Rounds to N decimals
 *
 * @param {Number} number
 * @param {Number} decimals
 * @return {Number}
*/
exports.round = function(number,decimals){return round(number,decimals);}
Number.prototype.round = function(decimals){return round(this,decimals);}
var round = function(number,decimals){
   if(!isNaN(number)){
      var d = 1;
      if(!isNaN(decimals)){
         d = Math.pow(10,decimals)
      }
      return Math.round(number * d)/d;
   }
   return null;
}

Related

1. $round(fractionalDigits)

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

2. 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;
   };
   

3. round()

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

4. round()

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

5. round(d)

   Number.prototype.round = function(d) {
     const string_number = String(this)
     const split_string = string_number.split('.')
     if (split_string.length === 1) return this
     const integer_chunk = split_string[0]
     if (!d) return integer_chunk
     const decimal_chunk = split_string[1]
     const determinig_digit = parseInt(decimal_chunk[d])
     if (determinig_digit < 5) {
   ...
   

6. round(dp)

   Number.prototype.round = function(dp) {
       multiplier = Math.pow(10,dp);
       return Math.round(this*multiplier) / multiplier;
   

7. round(places)

   Number.prototype.round = function(places) {
       return +(Math.round(this + "e+" + places)  + "e-" + places);
   function fractionToFloat(str)
   var complexParts = str.split(' ');
   var result = 0;
   var f;
   if (complexParts.length == 1) {
   ...
   

8. round(precision)

   Number.prototype.round = function(precision) {
     var factor = Math.pow(10, precision || 0);
     return Math.round(this * factor) / factor;
   };
   

9. round(precision)

   Number.prototype.round = function(precision){
     if (Object.isUndefined(precision)){
       return Math.round(this);
     precision = Math.pow(10, precision);
     return Math.round(this * precision) / precision;
   };