String Concat (v4)

Revision 4 of this benchmark created by zetlen on October 24, 2014

Setup

function build1(c, n) {
      var r = '';
      for (var i = 0; i < n; i++) {
        r = r + c;
      }
      return r;
    }
    
    function build2(c, n) {
      var r = [];
      for (var i = 0; i < n; i++) {
        r.push(c);
      }
      return r.join('');
    }
    function build3(c, n) {
      var r = c;
      while (r.length < n) {
        r = r + r;
      }
      return r.substr(0, n)
    }
    function build4(c, l) {
      var a = Array(l);
      while (l--) {
        a[l] = c;
      }
      return a.join('');
    }

Test runner

build1('c', 5000)

 

build2('c', 5000)

 

build3('c', 5000)

build4('c', 5000)

Revisions

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

• Revision 1: published by Taco on October 24, 2014
• Revision 2: published by zetlen on October 24, 2014
• Revision 3: published by zetlen on October 24, 2014
• Revision 4: published by zetlen on October 24, 2014