const dataList = [
'a',
'b',
'c',
'd',
'e',
'1',
'2',
'3',
'4',
'5'
]
function paginateArray(arr , itemPerPage , pageIndex) {
const lastIndex = itemPerPage * pageIndex;
const firstIndex = lastIndex - itemPerPage;
return arr.slice(firstIndex , lastIndex);
}
console.log(paginateArray(dataList , 5 , 2));