Linear DOM Replacement (v2)

Revision 2 of this benchmark created on

Preparation HTML

<div class="testcase depth-0"></div>
<div class="testcase depth-1"></div>
<div class="testcase depth-2"></div>
<div class="testcase depth-3"></div>
<div class="testcase depth-4"></div>
<div class="testcase depth-5"></div>
<div class="testcase depth-6"></div>
<div class="testcase depth-7"></div>
<div class="testcase depth-8"></div>
<div class="testcase depth-9"></div>
<div class="testcase depth-10"></div>
<div class="testcase depth-11"></div>
<style>
.testcase {
  display: none;
}
</style>
<script>

function build(element, depth, startIndex, children) {
  if (depth === 0) {
    for (var i = 0; i < children; ++i) {
      var child = document.createElement('div');
      child.textContent = startIndex + i;
      element.appendChild(child);
    }
  } else {
    var l = document.createElement('div');
    build(l, depth - 1, startIndex, children / 2);
    var r = document.createElement('div');
    build(r, depth - 1, startIndex + children / 2, children / 2);
    element.appendChild(l);
    element.appendChild(r);
  }
}

build(document.querySelector('.depth-0'), 0, 0, 2048);
build(document.querySelector('.depth-1'), 1, 0, 2048);
build(document.querySelector('.depth-2'), 2, 0, 2048);
build(document.querySelector('.depth-3'), 3, 0, 2048);
build(document.querySelector('.depth-4'), 4, 0, 2048);
build(document.querySelector('.depth-5'), 5, 0, 2048);
build(document.querySelector('.depth-6'), 6, 0, 2048);
build(document.querySelector('.depth-7'), 7, 0, 2048);
build(document.querySelector('.depth-8'), 8, 0, 2048);
build(document.querySelector('.depth-9'), 9, 0, 2048);
build(document.querySelector('.depth-10'), 10, 0, 2048);
build(document.querySelector('.depth-11'), 11, 0, 2048);

function findAndReplace(root, depth, size, index, replacementElement) {
  if (depth === 0) {
    root.replaceChild(replacementElement, root.childNodes[index]);
  } else {
    var mid = size / 2;
    if (index < mid) {
        findAndReplace(root.childNodes[0], depth - 1, mid, index, replacementElement);
    } else {
        findAndReplace(root.childNodes[1], depth - 1, mid, index - mid, replacementElement);
    }
  }
}

window.randomness = 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</script>

Test runner

Ready to run.

Testing in
TestOps/sec
depth-00
var root = document.querySelector('.depth-0');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 0, 2048, randomness[i], replacement);
}
ready
depth-01
var root = document.querySelector('.depth-1');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 1, 2048, randomness[i], replacement);
}
ready
depth-02
var root = document.querySelector('.depth-2');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 2, 2048, randomness[i], replacement);
}
ready
depth-03
var root = document.querySelector('.depth-3');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 3, 2048, randomness[i], replacement);
}
ready
depth-04
var root = document.querySelector('.depth-4');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 4, 2048, randomness[i], replacement);
}
ready
depth-05
var root = document.querySelector('.depth-5');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 5, 2048, randomness[i], replacement);
}
ready
depth-06
var root = document.querySelector('.depth-6');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 6, 2048, randomness[i], replacement);
}
ready
depth-07
var root = document.querySelector('.depth-7');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 7, 2048, randomness[i], replacement);
}
ready
depth-08
var root = document.querySelector('.depth-8');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 8, 2048, randomness[i], replacement);
}
ready
depth-09
var root = document.querySelector('.depth-9');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 9, 2048, randomness[i], replacement);
}
ready
depth-10
var root = document.querySelector('.depth-10');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 10, 2048, randomness[i], replacement);
}
ready
depth-11
var root = document.querySelector('.depth-11');
for (var i = 0; i < randomness.length; ++i) {
  var replacement = document.createElement('div');
  replacement.textContent = 'r-' + i;
  findAndReplace(root, 11, 2048, randomness[i], replacement);
}
ready

Revisions

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