Nodejs Number Calculate getPrecisiongetPrecision(length)

Method Source Code

Number.prototype.getPrecision = function getPrecision(length) {
    var value = parseFloat(this);
    if (Number.isFloat(value)) {
        return value.toString().split(".")[1].length;
    }//from  www  . j a v  a2s .com
    return 0;
};

Related

1. gcd(b)

   Number.prototype.gcd = function(b) {
     return (b == 0) ? this : this.gcd(this % b);
   

2. getDecimalgetDecimal()

   Number.prototype.getDecimal = function getDecimal() {
       return parseInt(this, 10);
   };
   

3. getDisplayText(number)

   Number.getDisplayText = function(number) {
       if (number < 1000) {
           return number;
       if (number < 1000000) {
           return (number / 1000).toFixed(1) * 1 + "k";
       return (number / 1000000).toFixed(1) * 1 + "m";
   };
   ...
   

4. getHashCode()

   Number.prototype.getHashCode = function () {
       var x = this;
       x = ((x >> 16) ^ x) * 0x45d9f3b;
       x = ((x >> 16) ^ x) * 0x45d9f3b;
       x = ((x >> 16) ^ x);
       return x;
   };
   

5. getHisByMs()

   Number.prototype.getHisByMs=function(){
       var ms=this;
       var date=new Date(ms);
       var his=[];
       his.push(Number(date.getHours()).addZero());
       his.push(Number(date.getMinutes()).addZero());
       his.push(Number(date.getSeconds()).addZero());
       return his;
   

6. getValue(arguments)

   var BigNumber = function(n){
     this.value = n.toString();
     this.getValue = function(){
       return this.value;
     this.getRealValue = function(){
       return Number(this.value);
     this.add = function(bnum){
   ...
   

7. greaterThan(num)

   Number.prototype.greaterThan = function(num) {
       return this > num;
   

8. gt(right) return this > right };

   Number.prototype.gt = function(right) { return this > right };
   Number.prototype.ge = function(right) { return this >= right };
   Number.prototype.lt = function(right) { return this < right };
   Number.prototype.le = function(right) { return this <= right };
   Number.prototype.eq = function(right) { return this == right };
   Number.prototype.ne = function(right) { return this != right };
   

9. hasDiv( n )

   Number.prototype.hasDiv = function( n ) {
     return Number.isInteger( this / n )
   function sum( ary ) {
     var out = 0
     for (var n in ary)  {
       out += ary[n]
     return out
   ...