Helper functions in JavaScript / JS – use lodash

For instance in my JS Applications I do often need some helper functions, like I know them from Java, like #equals etc..

lodash provide an elegant suite of helper tools.
For instance in my React App, I do

import _ from "lodash";

And I can use their functions, like in this example:

if (_.isEmpty(this.myFooAttribute)) {...

Of course you need lodash as a dependency.
In your package.json do:

 "dependencies": {
    //version is an example. I always try to use the latest.
    "lodash": "^4.17.15", 

How to test Websites with Java

A very good way of testing a website is Selenium:
The Groovy driven alternative is Tellurium which provides an easier entry but is not as good as Selenium for more complex Use Cases:

Code driven (JUnit-like):

  • Java Tests for Selenium
  • Selenium will start to interact with your WebBrowser, as guided by the Tests.
  • Bears strong resemblance to normal UNIT Tests


  • Create a Selenium Test Suite by recording your clicks and website navigation in your browser.
  • Replay in your browser