Check if string is a punctuation character

Question

Let\'s say I have a String array that contains some letters and punctuation

String letter[] = {\"a\",\"b\",\"c\",\".\",\"a\"};

In letter[3]

Answer 1

function has_punctuation(str) {

  var p_found = false;
  var punctuations = '`~!@#$%^&*()_+{}|:"<>?-=[]\;\'.\/,';
  $.each(punctuations.split(''), function(i, p) {
    if (str.indexOf(p) != -1) p_found = true;
  });

  return p_found;

}