Nodejs String to Float Convert toFloat(alt)

Method Source Code

/*/*www.j a v  a2  s . c  om*/
   String.toFloat()
   rog?o sampaio 2008, Jan 7
   
   Syntax:
      Number.toFloat( alt)
      
      Parameter:
         Number alt   - Optional. An alternative number to return if Number is null or NaN
   
   Return:
      Capitalized string
   
   Requirements:
      jCube.Number.check
   
   Sample:
      "1234.213".toFloat() == 1324.213
      "asdf".toFloat() == 0
*/
String.prototype.toFloat   = Number.prototype.toFloat   = jCube.String.toFloat   = function ( alt) {
   return parseFloat(this).check( alt||0);
}
jCube.Include("Number.check");

Related

1. tryParseToFixed(decimalPlaces)

   Number.prototype.tryParseToFixed = function(decimalPlaces) {
     if(!decimalPlaces) decimalPlaces = 0;
     if (isNaN(this)) {
       throw this + ' could not be converted to a Number.';
     return parseFloat(this).toFixed(decimalPlaces);
   

2. toFloat()

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

3. toFloat()

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

4. toFloat()

   String.prototype.toFloat = function(){
       return parseFloat(this);
   function angle(cx, cy, ex, ey) {
     var dy = ey - cy;
     var dx = ex - cx;
     var theta = Math.atan2(dy, dx); 
     theta *= 180 / Math.PI; 
     return theta;
   ...
   

5. toFloat()

   String.prototype.toFloat = function()
     var regexFloat = /[^0-9\.]+/g;
     this.number = this;
     this.number = this.number.replace( regexFloat, '' );
     this.number = ( Math.round( this.number * 100) / 100).toFixed(2);  
     return this.number;