Nodejs Float Round floor(scale)

Method Source Code

Number.prototype.floor = function (scale) {
    scale = Number(scale);/*from  w w w.  j  a  v  a 2s. c  o m*/
    if (isNaN(scale) || scale !== Number(scale.toFixed(0))) {
        return ;
    }
    var ratio = Math.pow(10,scale);
    return Math.floor(this * ratio) / ratio;
};

Related

1. roundToPrec(precision)

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

2. roundToTwoDPoints()

   Number.prototype.roundToTwoDPoints = function() {
     if (isNaN(this)) {
       console.log(this);
       console.dir(this);
       throw new Error('Not a number!');
     return Math.round((this + 0.00001) * 100) / 100;
   };
   

3. ceil()

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

4. ceilMagnitude()

   Number.prototype.ceilMagnitude = function(){
     if (this > 1) {
       var magnitude = Math.pow(10, (this.toString().length - 1));
       return Math.ceil(this / magnitude) * magnitude;
     } else {
       return 1;
   };
   var objectLength = function objectLength(object) {
   ...
   

5. floor()

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