JavaScript JSON Hashing

JsonHash.js

var _ = require('underscore');



function hash(data) {
    function innerHash(data) {
        var hashStr = '';
        if(_.isArray(data)) {
            _.each(data, function(e) {
                hashStr += innerHash(e) + ','
            })
        } else
         if(_.isObject(data)) {
            _.each(_.pairs(data), function(p) {
                hashStr += p[0].toString() + '::' + innerHash(p[1])
            })
        } else
            return data.toString();
        return hashStr;
    }

    var h = innerHash(data),
        index = h.length,
        build = 0;
    _.toArray(innerHash(data)).forEach(function(x) {
        build +=  x.charCodeAt(0) * index--
    })

    return build.toString(32);
}

x = [
    123,
    'blake 123',
    [1,2,3,4,{b: 1}],
    'blake',
    'vandemerwe',
    {a: 1, b: 2},
    {b: 1, a: 1},
    {a: 1, b: 1},
    {b: 2, a: 1},
    {a: 2, b: 1},
    {a:2, b:1},
    'this is a long sentence blah blah',
    'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum mollis, metus'
]

x.forEach(function(a) {
    console.log(hash(a));
})