Benchmark: Node Tree vs Direct Access

Script Preparation code:

function mapNodeTree(tree) {
  let index = 0;
  const result = {};
  const walk = (node) => {
    result[index++] = node;
    node.childNodes.forEach(walk);
  };
  walk(tree);
  return result;
}

var t = document.createElement('template');
t.innerHTML = '<tr><td class="col-md-1"></td><td class="col-md-4"><a></a></td><td class="col-md-1"><a><span class="glyphicon glyphicon-remove" aria-hidden="true" /></a></td><td class="col-md-6" /></tr>';
var template = t.content.firstChild;

Tests:

Node Tree
var tree = mapNodeTree(template) var node = tree[5];
Direct Access
var node = template.firstChild.nextSibling.nextSibling.firstChild

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Node Tree
Direct Access

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Overview**

The benchmark compares two approaches to access an HTML element: accessing it through a tree-like structure (Node Tree) versus direct access using a template element.

**Test Case 1: Node Tree**

In this test case, we create a tree-like structure by mapping the `template` element into a JavaScript object (`tree`). The root node of the tree is then traversed to reach the desired element (in this case, the 6th child node). This approach uses a recursive function (`walk`) to traverse the tree.

**Test Case 2: Direct Access**

In this test case, we directly access the 5th sibling of the `template` element's first child. This approach skips traversing the tree and accesses the element using its index.

**Comparison**

The benchmark compares the performance of these two approaches:

* **Node Tree**: traverses the tree-like structure to reach the desired element
* **Direct Access**: directly accesses the element using its index

**Pros and Cons**

**Node Tree:**

Pros:

* Can be more flexible and reusable for accessing elements with complex structures
* May perform better for large or deeply nested trees

Cons:

* More computationally expensive due to tree traversal
* May incur additional overhead from function calls and variable lookups

**Direct Access:**

Pros:

* Faster execution speed due to direct access
* Less computational overhead

Cons:

* Limited to accessing elements with known indices
* May not be suitable for complex or dynamic structures

**Library/Template**

The `template` element is used as a DOM node, and the `innerHTML` property is set to contain an HTML string. This allows us to create a template element with pre-rendered content.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax used in this benchmark. However, the use of `innerHTML` to set the content of the `template` element might be considered an older or non-standard way of creating DOM nodes.

**Other Alternatives**

Other alternatives to these approaches could include:

* Using a library like jQuery or a similar DOM manipulation library that provides more efficient and flexible ways to access elements
* Utilizing CSS selectors to access elements instead of relying on direct indexing
* Using a data-driven approach with arrays or objects to represent the structure of the HTML document

Keep in mind that these alternatives would depend on the specific use case and requirements of the project.

Related benchmarks:

Node Tree vs Direct Access (version: 0)

Comparing performance of: Node Tree vs Direct Access

Created: 3 years ago by: Guest

Jump to the latest result

Node Tree

Direct Access

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):