Nodejs Number Convert toDollars(c, printSign)

Method Source Code

Number.prototype.toDollars = function(c, printSign){
  var n = this,/*  w w  w.  j  a  v a2 s . c o m*/
    c = isNaN(c = Math.abs(c)) ? 2 : c,
    d = ".",
    t = ",",
    s = n < 0 ? "-" : "",
    i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "",
    j = (j = i.length) > 3 ? j % 3 : 0,
    sign = printSign ? '$': '';

  return sign + s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
};

Related

1. toBytes()

   Number.prototype.toBytes = function () {
     if (this === 0) { return '0 bytes' }
     var i = parseInt(Math.floor(Math.log(this) / Math.log(1024)))
     var r = Math.round(this / Math.pow(1024, i) * 10) / 10
     return [r, ['bytes', 'KB', 'MB', 'GB', 'TB'][i]].join(' ')
   

2. toCents()

   Number.prototype.toCents = function(){
     return this * 100;
   };
   

3. toChar()

   Number.prototype.toChar = function() {
     return String.fromCharCode(this);
   };
   

4. toCounter()

   Number.prototype.toCounter = function () {
       var d = this;
       d = Number(d);
       var h = Math.floor(d / 1000 / 3600 );
       var m = Math.floor(d / 1000 % 3600 / 60);
       var s = Math.floor(d / 1000 % 3600 % 60);
       var ms = (d % 3600000 % 60000 % 1000);
       var tenths = Math.floor(ms / 100);
       return ((h > 0 ? h + ":" + (m < 10 ? "0" : "") : "") + m + ":" + (s < 10 ? "0" : "") + s + "." + tenths);
   ...
   

5. toDigits()

   Number.prototype.toDigits = Number.prototype.toDigits || function () {
     let number = this;
     let digits = [];
     while (number > 0) {
       digits[digits.length] = number % 10;
       number = Math.floor(number / 10);
     return digits.reverse();
   };
   ...
   

6. toMinutes()

   Number.prototype.toMinutes = function(){
     return (Math.floor(parseInt(this)/60)).addTrailingZero()+":"+(parseInt(this)%60).addTrailingZero();
   };
   

7. toNumber( val )

   var NumberUtils = new function() {
       this.toNumber = function( val ) {
           if(val==null || val=="") return null;
       val = val.replace(',', '');
           return eval(val);
       this.toInteger = function( val ) {
       val = val.replace(',', '');
           return parseInt(val, 10); 
   ...
   

8. toPrecisionFixed(precision)

   Number.prototype.toPrecisionFixed = function(precision) {
     var n = this.toPrecision(precision);
     n = n.replace(/(.+)e\+(.+)/, function(n, sig, exp) {
       sig = sig.replace(/\./, '');       
       l = sig.length - 1;
       while (exp-- > l) sig = sig + '0'; 
       return sig;
     });
     n = n.replace(/(.+)e-(.+)/, function(n, sig, exp) {
   ...
   

9. toPrecision(length)

   Number.prototype.toPrecision = function toPrecision(length) {
       return parseFloat(this.toFixed(length));
   };