Hash Table

hash.js

var Hash = function() {
    this.tableSize = 16;
    this.table = new Array(this.tableSize);

    this.convert = function(key) {
        var hash = 0;
        for (var i=0;i<key.length;i++) hash += key[i].charCodeAt() * (i+1);
        return Math.abs(hash) % this.tableSize;
    };

    this.set = function(key, data) {
        var hash = this.convert(key);
        this.table[hash] = data;
    };

    this.get = function(key) {
        var hash = this.convert(key);
        if(this.table[hash] !== undefined) return this.table[hash];
        return null;
    };
};

var key = 'test';
var value = 'result';
var map = new Hash();
map.set(key, value);
var result = map.get(key);