How far you justify to write client side code when you have nodejs as a server side ?

[saurabh shankariya]

Hi,

I am a beginner in nodejs application development. I am developing an app for my interest to explore about javascript using nodejs, front-end framework expressjs, socket connection between server & client side with help of socket.io, and some libraries like handlebars, requirejs, jquery , etc.
While writing code, I am more concerned about client side coding. How far is it good to write client side js code ? To handle dom events like click, hover, etc, requirea client side code !
To render table, requires datatable library and write bunch of code at client side !.
Am i doing right ? or missing anything ?
Please advise me here. If there any alternate way to do so, please provide same. Any suggestion advise is highly appreciated.