Nodejs String Hash hashCode()

Method Source Code

String.prototype.hashCode = function() {
   var hash = 0;/*www  .  ja  v  a2  s .co m*/
   if (this.length == 0) return hash;
   for (i = 0; i < this.length; i++) {
      char = this.charCodeAt(i);
      hash = ((hash << 5) - hash) + char;
      hash = hash & hash; // Convert to 32bit integer
   }
   return hash;
};
RegExp.escape = function(s) {
   return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
};
function addFctToPage (text, name) {
   var D                                   = document;
   var scriptNode                          = D.createElement ('script');
   scriptNode.type                         = "text/javascript";
   if (text)       scriptNode.textContent  = text;
   if (name)      scriptNode.textContent  = name + ' = ' + text;

   var targ = D.getElementsByTagName ('head')[0] || D.body || D.documentElement;
   targ.appendChild (scriptNode);
}

Related

1. hashCode()

   String.prototype.hashCode = function() {
     var hash = 0, i, chr, len;
     if (this.length === 0) return hash;
     for (i = 0, len = this.length; i < len; i++) {
       chr   = this.charCodeAt(i);
       hash  = ((hash << 5) - hash) + chr;
       hash |= 0; 
     return hash;
   ...
   

2. hashCode()

   String.prototype.hashCode = function()
     var hash = 0;
     if (this.length == 0) return hash;
     for (i = 0; i < this.length; i++)
       char = this.charCodeAt(i);
       hash = ((hash<<5)-hash)+char;
       hash = hash & hash; 
   ...
   

3. hashCode()

   String.prototype.hashCode = function() {
     var hash = 0;
     if(this.length == 0) return hash;
     for(i = 0; i < this.length; i++) {
       char = this.charCodeAt(i);
       hash = ((hash<<5)-hash)+char;
       hash = hash & hash;
     return hash;
   ...
   

4. hashCode()

   String.prototype.hashCode = function() {
     var hash = 0, i, chr, len;
     if (this.length == 0) return hash;
     for (i = 0, len = this.length; i < len; i++) {
       chr   = this.charCodeAt(i);
       hash  = ((hash << 5) - hash) + chr;
       hash |= 0; 
     return hash;
   ...
   

5. hashCode()

   String.prototype.hashCode = function(){
     var hash = 0;
     if (this.length === 0) return hash;
     for (i = 0; i < this.length; i++) {
       chr = (this.charCodeAt(i) * 2.2); 
       hash = ((hash<<32)-hash)+chr; 
       hash = hash & hash; 
     return hash;
   ...
   

6. hashCode()

   String.prototype.hashCode = function () {
       var hash = 0;
       if (this.length === 0) {
           return hash;
       for (i = 0; i < this.length; i++) {
           char = this.charCodeAt(i);
           hash = ((hash<<5)-hash)+char;
           hash = hash & hash; 
   ...
   

7. hashCode()

   var Commons = function() {};
   String.prototype.hashCode = function() {
       var aux = "v1.0" + this;
       var hash = 0, i, chr, len;
       if (this.length === 0) return hash;
       for (i = 0, len = aux.length; i < len; i++) {
           chr   = aux.charCodeAt(i);
           hash  = ((hash << 5) - hash) + chr;
           hash |= 0; 
   ...
   

8. hashCode(s)

   String.prototype.hashCode = function(s) {
     var hash = 0;
     if (this.length === 0) {
       return hash;
     for (var i = 0; i < this.length; i++) {
       var character = this.charCodeAt(i);
       hash = ((hash << 5) - hash) + character;
       hash = hash & hash; 
   ...
   

9. hashify()

   String.prototype.hashify = function() {
     var o = {};
     (this + this[0]).split('').reduce(function(k, v) {
       o[k] = k in o ? [].concat(o[k], v): v;
       return v;
     });
     return o;