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innerHTML vs removeChild/appendChild (v180)

Revision 180 of this benchmark created by Alex on June 5, 2014

Description

what method for empty a element is faster ?

Preparation HTML

<div id="container">

</div>

Setup

var content = '<span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><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</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span><span>a</span>';
    
    var contentDOM = [];
    for (var counter = 0; counter < 2000; counter++){
      var span = document.createElement('span');
      span.innerText = 'a';
      contentDOM.push(span); 
    }
    
    var cont = document.getElementById('container');
    cont.innerHTML = content;
    
    function refill() {
      cont.innerHTML = content;
    }
    
    function refillRemoveChild() {
      while (cont.lastChild) {
        cont.removeChild(cont.lastChild);
      }
      cont.innerHTML = content; 
    }
    
    function refillRemoveChildAndAppendChild() {
      while (cont.lastChild) {
        cont.removeChild(cont.lastChild);
      }
      for (counter = 0; counter < 2000; counter++){
        cont.appendChild(contentDOM[counter]); 
      }  
    }

Test runner

Ready to run.

Testing in
Test		Ops/sec
Refill with innerHTML	`refill();`	ready
Refill with removeChild before innerHTML	`refillRemoveChild();`	ready
refill with remove child and then append child	`refillRemoveChildAndAppendChild();`	ready

Revisions

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

Revision 1: published by Ali Mihandoost on December 6, 2011
Revision 2: published by Ali Mihandoost on December 10, 2011
Revision 5: published by XP1 on February 2, 2012
Revision 6: published on February 2, 2012
Revision 7: published on December 18, 2012
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