Info

Tests to see what speeds the browser DOM runs at in various browsers.

DOM Core Performance: Appending, Prepending, Inserting, Indexing, Removing

InnerHTML

Preparation code

<div></div> 
<script>
     var count = 100;
     var divs = new Array(count);
     var div = document.getElementsByTagName('div')[0]
  
     function testAppend(div) {
         var add = document.createElement('div');
         for (var i = 0; i<=1000;i++) {
             div.appendChild(add);
         }
     }
   
     function testPrepend(div) {
         var add = document.createElement('div');
         for (var i = 0; i<=1000;i++) {
             div.insertBefore(add, div.firstChild);
         }
     }
   
     function testInnerHTML(div) {
         for (var i = 0; i<=1000;i++) {
             div.innerHTML = "<div></div>";
         }
     }
     function testInnerHTMLBuffer(div) {
         var buffer=[];
         for (var i = 0; i<=1000;i++) {
             buffer.push("<div></div>")
         }
         div.innerHTML = buffer.join("");
     }
   
     function testInsert(div) {
         var add = document.createElement('div');
         for (var i = 0; i<=1000;i++) {
             div.insertBefore(add, div[0]);
         }
     }
  
</script>

Preparation code output

Test runner

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     testAppend(div);

testInnerHTML(div)

     testPrepend(div);

     testInsert(div);

testInnerHTMLBuffer(div)

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. Here’s a list of current revisions for this page:

• Revision 1: published on 25th July 2011
• Revision 3: published on 27th March 2012
• Revision 4: published by Brigitte Jellinek on 5th December 2012
• Revision 5: published on 10th December 2012
• Revision 6: published on 21st March 2013
• Revision 7: published 2 weeks ago

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