Nodejs String Soundex soundex()

Method Source Code

/**/*from w ww. j a  va 2s  .  c  o m*/
 * Soundex algorithm implementation
 *
 * @see   http://en.wikipedia.org/wiki/Soundex
 */
String.prototype.soundex = function()
{
   return this.charAt(0).toUpperCase() + this.slice(1).toLowerCase()
      .replace(/\w/g, function($0)
      {
         return String.prototype.soundex.table[$0];
      })
      .replace(/(.)\1+/g, '$1')
      .slice(0, 3)
      ;
};

Related

1. soundex( )

   String.prototype.soundex = function( ){
     var i, j, r;
     var keyLength = 4; 
     var map = { B:1,F:1,P:1,V:1,C:2,G:2,J:2,K:2,Q:2,S:2,X:2,Z:2,D:3,T:3,L:4,M:5,N:5,R:6 };
     var r = (s = this.toUpperCase().replace(/[^A-Z]/g, "").split("")).splice(0, 1);
     var key = {
         items : [],
         _check: function(e) {
         var m = map[e]; 
   ...
   

2. soundex(p)

   String.prototype.soundex = function(p){
     var i, j, l, r, p = isNaN(p) ? 4 : p > 10 ? 10 : p < 4 ? 4 : p,
     m = {BFPV: 1, CGJKQSXZ: 2, DT: 3, L: 4, MN: 5, R: 6},
     r = (s = this.toUpperCase().replace(/[^A-Z]/g, "").split("")).splice(0, 1);
     for(i = -1, l = s.length; ++i < l;)
       for(j in m)
         if(j.indexOf(s[i]) + 1 && r[r.length-1] != m[j] && r.push(m[j]))
           break;
     return r.length > p && (r.length = p), r.join("") + (new Array(p - r.length + 1)).join("0");
   ...
   

3. soundex(p)

   String.prototype.soundex = function(p){ 
       var i, j, r, p = isNaN(p) ? 4 : p > 10 ? 10 : p < 4 ? 4 : p,
       m = {BFPV: 1, CGJKQSXZ: 2, DT: 3, L: 4, MN: 5, R: 6},
       r = (s = this.toUpperCase().replace(/[^A-Z]/g, "").split("")).splice(0, 1);
       for(i in s)
           for(j in m)
               if(j.indexOf(s[i]) + 1 && r[r.length-1] != m[j] && r.push(m[j]))
                   break;
       return r.length > p && (r.length = p), r.join("") + (new Array(p - r.length + 1)).join("0");
   ...
   

4. soundex.init(table)

   String.prototype.soundex.init = function(table)
     String.prototype.soundex.table = {};
     table = table || {
       'bfpv': '1', 
       'cgjkqsxz': '2', 
       'dt': '3', 
       'l': '4', 
       'mn': '5', 
   ...
   

5. soundexRefined()

   var US_ENGLISH_MAPPING = "01360240043788015936020505".split("");
   var lookup = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".split("");
   String.prototype.soundexRefined = function(){
           if (this == null){ 
               return null;
           var str = this.toUpperCase().replace(/[^A-Z]/g, "");
           if (this.length == 0) {
               return str;
   ...