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MAC:Wed Jan 19:10:31:~> ssh morrison@cs.ncssm.edu
morrison@cs.ncssm.edu's password: 
Last login: Wed Jan 19 10:03:18 2022 from 172.31.248.160
CSWed Jan 19:10:31:~> node
> function f(x, y){ return x*y;}
undefined
> f(4,5)
20
> typeof true
'boolean'
> typeof 5
'number'
> typeof f
'function'
> let g = function(x, y) {return x*y;}
undefined
> g
[Function: g]
> g(3,4)
12
> const h = (x, y) => x*y;
undefined
> h(4,5)
20
> f = 20
20
> typeof f
'number'
> x
ReferenceError: x is not defined
> const a = [1,2,3];
undefined
> z
ReferenceError: z is not defined
> a
[ 1, 2, 3 ]
> a[0]
1
> a[0] = 5
5
> a
[ 5, 2, 3 ]
> // if is exactly the same as Java
undefined
> //while same as Java
undefined
> for(let k = 0; k < 10; k++){console.log(k);}
0
1
2
3
4
5
6
7
8
9
undefined
> a
[ 5, 2, 3 ]
> for(k in a){console.log(k);}
0
1
2
undefined
> for(k of a){console.log(k);}
5
2
3
undefined
> CSWed Jan 19:11:00:~>