freeCodeCamp Challenge Guide: Strip control codes and extended characters from a string

Guide
1

Strip control codes and extended characters from a string

Solutions

Solution 1 (Click to Show/Hide) 
function strip(s) {
  return s.split('').filter(function(x) {
    var n = x.charCodeAt(0);

    return 31 < n && 127 > n;
  }).join('');
}