Differentiate between for and for…in, In relation to JavaScript. code example

Example 1: 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.
*/

Example 2: difference between java and javascript

java is virtualised and compiled while javascript isn't.
javascript and java aren't that similar apart from beign 
both OOP.