Run results for: img src slowness

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36 Edg/95.0.1020.53

Browser: Chrome 95

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Creation with src	34396.9 Ops/sec
Creation without src	507489.6 Ops/sec
Clone with src	35657.1 Ops/sec
Clone without src	624573.4 Ops/sec

Script Preparation code:

function makeImage( src ) {
  var img = document.createElement( 'img' );
  img.className='nail';
  if ( src ) {
    img.src='data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=';
  }
  return img;
}

withSrc = makeImage( true );
withoutSrc = makeImage( false );

Tests:

Creation with src
makeImage( true );
Creation without src
makeImage( false );
Clone with src
withSrc.cloneNode();
Clone without src
withoutSrc.cloneNode();

Run results for: img src slowness

Creating image tags with/without an src attribute with a data URI.

Creation with src

Creation without src

Clone with src

Clone without src