Benchmark: Create and append/remove versus display:block/display:none (improved) (without-recreating)

Create and append/remove versus display:block/display:none (improved) (without-recreating) (version: 0)

By writing javascript web applications It is often common the need to show or hide elements like a div according to the user actions. Is it better to do this by creating and appending the node when it is needed or to create the node on the application start and then just display or hide it? This benchmark is a performance test of this particular use case. In this version, the createAppendDiv was isolated from operations that can be done once, so the test executes just the operations that are really essencial for the test case.

Comparing performance of: Create and append/remove vs display:block/display:none

Created: 10 months ago by: Guest

Jump to the latest result

HTML Preparation code:

<div id="container">
  <div id="div1">div1</div>
  <div id="div2">div2</div>
  <div id="div4">div4</div>
</div>

Script Preparation code:

function createHideCssClass() {
  var style = document.createElement('style');
  style.type = 'text/css';
  style.innerHTML = '.hide { display: none; }';
  document.getElementsByTagName('head')[0].appendChild(style);
}

var container = document.getElementById('container');
var div4 = document.getElementById('div4');

var div3 = document.createElement('div');
div3.setAttribute('id', 'div3');
var content = document.createTextNode('div3');
div3.appendChild(content);

function createAppendDiv() {
  container.insertBefore(div3, div4);
}

function removeDiv() {
  var div3 = document.getElementById('div3');
  div3.remove();
}

function hideDiv() {
  var div2 = document.getElementById('div2');
  div2.classList.add('hide');
}

function showDiv() {
  var div2 = document.getElementById('div2');
  div2.classList.remove('hide');
}

createHideCssClass();
var times = 100000;

Tests:

Create and append/remove
for (var i=0; i< times; i++) { createAppendDiv(); removeDiv(); }
display:block/display:none
for (var i=0; i< times; i++) { hideDiv(); showDiv(); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Create and append/remove
display:block/display:none

Create and append/remove versus display:block/display:none (improved) (without-recreating) (version: 0)

Comparing performance of: Create and append/remove vs display:block/display:none

Created: 10 months ago by: Guest

Jump to the latest result

Create and append/remove

display:block/display:none

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

No previous run results