Map array function

// Map  Array methods 
function map(arr,callback){
    
    let result = [];
  for (let i = 0; i < arr.length; i++) {
    
    result.push(callback(arr[i])) 
  }
  return result
}
//  test 
const arr = [1,2,3,4,5]
const result = map(arr,(item,index)=>{
    
    return item *10;
})
console.log(result);