Preparation code

      
      <script>

        Benchmark.prototype.setup = function() {

          
  var largeCode = ""
  for (var i = 0; i < 1000000; i++) {
      largeCode += String.fromCharCode(Math.random() * 128 | 0)
  }
  function use(count) { window.count = count }
  
  function count1(str) {
      var re = /\n/g, count = 0
      while (re.test(str)) count++
      return count
  }
  
  function count2(str) {
      return str.split(/\n/g).length - 1
  }
  
  function count3(str) {
      var count = 0
      for (var i = 0; i < str.length; i++) {
          if (str.charCodeAt(i) === 0x0a) count++
      }
      return count
  }
  
  function count4(str) {
      var count = 0
      var i = 0
      while (true) {
          i = str.indexOf("\n", i) + 1
          if (i === 0) return count
          count++
      }
  }
        
  };


      
</script>
    

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

use(count2(largeCode))

use(count3(largeCode))

use(count1(largeCode))

use(count4(largeCode))

Compare results of other browsers

Revisions

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

• Revision 1: published kaizhu256 on 2019-1-20
• Revision 2: published Isiah Meadows on 2019-1-20
• Revision 4: published Isiah Meadows on 2019-1-20
• Revision 7: published Isiah Meadows on 2019-1-20
• Revision 8: published Isiah Meadows on 2019-1-20
• Revision 9: published kai zhu on 2019-1-20

0 Comments