Editing YUI TreeView shootout

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Preparation code

Preparation code HTML (this will be inserted in the <body> of a valid HTML5 document in standards mode) (useful when testing DOM operations or including libraries)

Include JavaScript libraries as follows: <script src="//cdn.ext/library.js"></script>

Define setup for all tests (variables, functions, arrays or other objects that will be used in the tests) (runs before each clocked test loop, outside of the timed code region) (e.g. define local test variables, reset global variables, clear canvas, etc.) (see FAQ)

var container = document.getElementById('treeview');

// Generate a bunch of bogus data to fill the tree with.
var nodes = [],
    typeNodes = [], // gallery-yui3treeview needs an extra "type" property on parent nodes, and this breaks gallery-fwt-treeview
    child, end, node, typeNode, start;

for (var i = 0; i < 20; i++) {
  node = {label: 'Item ' + i};
  typeNode = {label: 'Item ' + i};
  
  // Fill every third node with 20 children.
  if (i % 3 === 0) {
    fillChildren(node, 20);
    fillChildren(typeNode, 20, null, true);
  }
  
  // Fill every tenth node with children to a depth of 50.
  if (i % 10 === 0) {
    fillChildren(node, 1, 50);
    fillChildren(typeNode, 1, 50, true);
  }
  
  nodes.push(node);
  typeNodes.push(typeNode);
}

function fillChildren(parent, count, depth, includeType) {
  var child;
  
  if (!parent.children) {
    if (includeType) {
      parent.type = 'TreeView';
    }

parent.children = [];
  }
  
  for (var i = 0; i < count; i++) {
    child = {label: 'Child ' + i};
    
    if (depth) {
      fillChildren(child, count, depth - 1);
    }
    
    parent.children.push(child);
  }
}

Define teardown for all tests (runs after each clocked test loop, outside of the timed code region) (see FAQ)

Code snippets to compare

Test 1

Title

Async (check if this is an asynchronous test)

Code

new Y.TreeView({
  container: container,
  nodes    : nodes
}).render();

Test 2

Title

Async (check if this is an asynchronous test)

Code

new Y.FWTreeView({tree: nodes}).render(container);

Test 3

Title

Async (check if this is an asynchronous test)

Code

new Y2.TreeView({children: typeNodes}).render(container);

Test 4

Title

Async (check if this is an asynchronous test)

Code

new Y3.TreeView({children: nodes}).render(container);