truncate long strings

Benchmark created on October 2, 2012

Preparation HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

Setup

var truncateLongStringsOld = function (s, join_char) {
      if (join_char == null) {
        join_char = ' ';
      }
    
      if (s == null || s === '') {
        return '';
      }
      var wmaxlen = 10;
      var words = s.split(/\s+/);
      var fixed_words = [];
      $.each(words, function () {
        var w = this;
        if (w.length <= wmaxlen) {
          fixed_words.push(w);
        } else {
          var parts = [];
          while (w.length > 0) {
            if (w.length > wmaxlen) {
               parts.push(w.substring(0, wmaxlen));
               w = w.substring(wmaxlen);
            } else {
              parts.push(w);
              w = '';
            }
          }
          fixed_words.push(parts.join(join_char));
        }
      });
      return fixed_words.join(' ');
    };
    
    
    truncateLongStringsNew = function (s, join_char) {
      if (join_char == null) join_char = " ";
      return s.replace(/\S{10}/g, "$&" + join_char);
    }
    
    truncateLongStringsFuture = function (s, join_char) {
      join_char = join_char || " ";
      return s.replace(/\S{10}/g, "$&" + join_char);
    }

Test runner

truncateLongStringsOld("abcdefghijklmno pqr st uv wxyzyxw vu ts rqp")

truncateLongStringsNew("abcdefghijklmno pqr st uv wxyzyxw vu ts rqp")
 

truncateLongStringsFuture("abcdefghijklmno pqr st uv wxyzyxw vu ts rqp")
 

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

• Revision 1: published on October 2, 2012