deep nested property

deepHas.js

function propDeep(target, path, rtn) {
    "use strict";
    try {
        target = target || {};
        var result = eval("target." + path);
    } catch(e) {
        return false;
    }
    if (result) {
        return rtn ? result : true;
    }
}

function hasProperty(target, path) {
    var test = propDeep(target, path, false);
    return test;
}

function getProperty(target, path) {
    var test = propDeep(target, path, true);
    return test;
}

exports.hasProperty = hasProperty;
exports.getProperty = getProperty;

deepHasTest.js

var deepHas = require("./deepHas");
var _ = require("underscore");
_.mixin(deepHas);
var homeAPIResponse = {
    onlineCheckInConfig : {
        flightCheckIn : {
            sniffUrl : "http://sniffthat"
        }
    }
};

//will return http://sniffthat
console.log(_.getProperty(homeAPIResponse, "onlineCheckInConfig.flightCheckIn.sniffUrl"));
//will return true
console.log(_.hasProperty(homeAPIResponse, "onlineCheckInConfig.flightCheckIn.sniffUrl"));
//will both return undefined
console.log(_.getProperty(homeAPIResponse, "onlineCheckInConfig.flightCheckIn.sniffURl"));
console.log(_.hasProperty(homeAPIResponse, "onlineCheckInConfig.flightCheckIn.sniffURl"));