Answers for "js || vs ??"

js || vs ??

The OR operator || uses the right value if left is falsy,
  while the nullish coalescing operator ?? uses the right
  value if left is null or undefined.

javascript vs java

/*
JavaScript: Easier to learn and run, runs in browser,
not strictly object-orientated, mainly client-side.

Java: More secure, strict OOP, steeper learning curve, 
used literally everywhere, needs to be compiled.
*/

java vs javascript

/*
JavaScript can be used to do neat things like creating 
animation in HTML. ... JavaScript code is run on a 
browser only, while Java creates applications that run 
in a virtual machine or browser. Java is an OOP 
(object-oriented programming) language, and JavaScript is
specifically an OOP scripting language.
*/

java vs javascript

/*
Java script is also better than java when it comes to front-end web development 
server side performmance because node.js runs much faster than both java and 
python
*/