DynamicQuery.js

var boolExprMap = {
	$and: function(a,b){ return a && b} ,
  $or: function(a,b){ return a || b; }
}

var TreeNode = function(op,def){
	op = (op || '$and').toLowerCase();
	this.op = boolExprMap[op];  
  def = def || (op === '$and')
 	this.fns = [new LeafNode(function(){return def;})]; 
}

TreeNode.prototype.push = function(otherTree){
	this.fns.push(otherTree)
}

TreeNode.prototype.run = function(obj){
	var myOp = this.op;
	return this.fns.map(function(f){return f.run(obj); }).reduce(function(prev, curr){
  	return myOp(prev, curr);
  });
}

var LeafNode = function(fn){this.fn = fn};
LeafNode.prototype.run = function(obj){ 
	return this.fn(obj);
}

function evalProp(src, str){
	var props = str.split(".");
  var val = src;
  for(i=0;i<props.length;i++){
  	val = val[props[i]]
  }
  return val;
}

function parseToQuery(obj, opts, op){ 	

  op = (op || "$and").toLowerCase();
  var tree = new TreeNode(op)
   for(var p in obj){  
		(function(p){
      if(p in boolExprMap){
    		var params = Array.isArray(obj[p]) ? obj[p] : [obj[p]];
        params.forEach(function(v){
      		tree.push(parseToQuery(v, opts, p));
      	})
    	}else {
        tree.push(new LeafNode(function(target){
        	return opts.match(evalProp(target, p), obj[p])          
        }));
      }
    })(p);
   }
   return tree
}


var query = parseToQuery({"job.title": "dev1"}, {
	match: function(target, query){
  	return target == query;
  }
})
var result = query.run({name: "mark tranter", age: 30, job: {title: 'dev'}});

console.log("result is: " + result);