explain filter functions javascript code example

Example 1: how the filter() function works javascript

const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];

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

Example 2: javascript filter

const filtered = array.filter(item => {
    return item < 20;
});
// An example that will loop through an array
// and create a new array containing only items that
// are less than 20. If array is [13, 65, 101, 19],
// the returned array in filtered will be [13, 19]