A simple javascript function that implements truth tables, useful for handling multiple conditions

example.js

var TruthTable = require('truthtable');
var condition1 = true;
var condition2 = false;
var tt = new TruthTable(condition1, condition2)
    .on('01', function() {
        console.log('01');
    })
    .on('11', function() {
        console.log('11');
    })
    .on('10', function() {
        console.log('10');
    })
    .on('1*', function() {
        console.log('1*');
    })
    .on('*1', function() {
        console.log('*1');
    }).go();
//output:
//  10
//  1*

truthtable.js

var TruthTable = function() {
    this.conds = Array.prototype.slice.call(arguments);
    this.actions = {};
};

TruthTable.prototype.on = function(cond, fn) {
    if (cond.length != this.conds.length) {
        throw "condition length must match";
    }

    this.actions[cond] = fn;

    return this;
};

TruthTable.prototype.go = function() {

    var actions = this.actions;
    var conds = this.conds;

    for (var cond in actions) {
        if (actions.hasOwnProperty(cond)) {
            var c = cond.split('');
            var match = true;
            for (var i = 0; i < c.length; i++) {
                var cond_i = c[i];

                if ((cond_i == '*') || (cond_i == '1' && conds[i]) || (cond_i == '0' && !conds[i])) {
                    //   console.log('good');
                } else {
                    match = false;
                    break;
                }

            }

            if (match) {
                var action = actions[cond];

                if (action) action();
            }

        }
    }

};