Nodejs String Hash hashCode()

Method Source Code

String.prototype.hashCode = function() {
  var hash = 0, i, chr;
  if (this.length === 0) return hash;
  for (i = 0; i < this.length; i++) {
    chr   = this.charCodeAt(i);//www .  ja  v  a  2s.c o  m
    hash  = ((hash << 5) - hash) + chr;
    hash |= 0; // Convert to 32bit integer
  }
  return hash;
};

Related

1. hashCode()

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

2. hashCode()

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

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;
     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;
   ...
   

5. hashCode()

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

6. hashCode()

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

7. hashCode()

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

8. 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 Math.abs(hash);
   ...
   

9. 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;
   ...