filter through an array to only return strings code example

Example 1: 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]

Example 2: javascript array filter

var numbers = [1, 3, 6, 8, 11];

var lucky = numbers.filter(function(number) {
  return number > 7;
});

// [ 8, 11 ]