1const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
2
3const filter = arr.filter((number) => number > 5);
4console.log(filter); // [6, 7, 8, 9]
5

1// filter takes an array and function as argumentfunction 
2filter(arr, filterFunc) {
3  const filterArr = []; // empty array        
4  // loop though array    
5  for(let i=0;i<arr.length;i++) {        
6    const result = filterFunc(arr[i], i, arr);        
7    // push the current element if result is true        
8    if(result)             
9      filterArr.push(arr[i]);     
10  }    
11  return filterArr;
12}