Array_filter_map_reduce

 A=[1,2,3,4,5,6];

// for(b of A){

//     console.log(b);

// }

// for( v in A){

//     console.log(A[v]);

// }

// A.forEach(element => {

//  console.log(element);   

// });

// result=A.filter((element)=>element>3);

// console.log(result);

// result=A.reduce((sum,element)=>sum+element,0);

// console.log(result);

result=A.map((el)=>el+'hello');

console.log(result);