Nodejs String to Number Convert toNumber()

Method Source Code

String.prototype.toNumber = function(){
   var str = this.gsub(",", ".");
   if (str.length == 0)
      return 0;// w  w  w. java 2 s .c  om
   var parts = str.split(".");
   if (parts.length > 1){               
      var res = '';
      for(var i=0; i<parts.length-1; i++){
         res = res + parts[i];
      }                  
      return parseFloat(res + '.' + parts[parts.length - 1]);
   }      
   else
      return parseFloat(parts[0]);   
} 

String.prototype.isJSONDate = function(){
   return /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}).*Z$/.match(this);
} 

String.prototype.toDate = function() {
   if (this.isJSONDate()){
      return Date.fromJSON(this);
   } else{
     return null; 
   }      
}

String.prototype.toCurrency = function(decimalPlaces){
  return parseFloat(this).toCurrency();
}

Related

1. toNum()

   String.prototype.toNum = function() {
      if (this.length === 0) return 0;
      return parseInt(this);
   

2. toNumber()

   String.prototype.toNumber = function() {
       return parseInt(this);
   };
   var ten = "10";
   var fifty = "50";
   console.log(ten.toNumber()); 
   console.log(fifty.toNumber()); 
   

3. toNumber()

   String.prototype.toNumber = function() {
     return parseFloat(this);
   };
   

4. toNumber()

   String.prototype.toNumber = function(){
     return +this;
   };
   

5. toNumber()

   String.prototype.toNumber = function(){
     if(this.match(/\./)){
       return parseFloat(this, 10);
     } else {
       return parseInt(this, 10);
   };
   

6. toNumber()

   String.prototype.toNumber = function() {
       return Number(this);
   

7. toNumber()

   String.prototype.toNumber = function()
     var res = 0;
     for(var i = this.length - 1; i >= 0; --i) {
       res += res * 256 + this.charCodeAt( i );
     return res;