Recently, I was working on translation of [slapos console site](https://slapos.vifib.com/). In this post, I will explain how to realize the translation of the site(especially the javascript part), invoving in ERP5 system based on Zope. While in these Javascript files, I will play with [Renderjs](https://renderjs.nexedi.com/) and RSVP to generate the translated site. Besides, unit test is crucial too. I will present a way to simplify the related test zuite in multi languages, making it more automatically.