Benchmark: Multiple Attributes Performance

HTML Preparation code:

<script src="https://d3js.org/d3.v5.min.js"></script>

Script Preparation code:

const data = d3.range(100).map(() => ({
  x: Math.random() * 300,
  y: Math.random() * 150
}));

const svg = d3.select("body")
	.append("svg");
  
const circles = svg.selectAll("circle")
	.data(data)
  .enter()
  .append("circle")
  .attr("cx", d=>d.x)
  .attr("cy", d=>d.y)
  .attr("r", 2)
  .style("fill", "teal");

Tests:

Default
const data = d3.range(200).map(() => ({ x: Math.random() * 300, y: Math.random() * 150 })); const svg = d3.select("body") .append("svg"); const circles = svg.selectAll(null) .data(data) .attr("cx", d=>d.x) .attr("cy", d=>d.y) .attr("r", 2) .style("fill", "teal");
each with setAttribute
const data = d3.range(200).map(() => ({ x: Math.random() * 300, y: Math.random() * 150 })); const svg = d3.select("body") .append("svg"); const circles = svg.selectAll("circle") .data(data) .each((d, i, n) => { n[i].setAttribute("cx", d.x); n[i].setAttribute("cy", d.y); n[i].setAttribute("r", 2); }) .style("fill", "teal")
setAttribute with loop
const data = d3.range(200).map(() => ({ cx: Math.random() * 300, cy: Math.random() * 150, r: 2 })); const svg = d3.select("body") .append("svg"); const circles = svg.selectAll("circle") .data(data) .each((d, i, n) => { for(let key in d){ n[i].setAttribute(key, d[key]) } }) .style("fill", "teal")
Detached
const data = d3.range(200).map(() => ({ cx: Math.random() * 300, cy: Math.random() * 150, r: 2 })); const svg = d3.select("body") .append("svg") .remove(); const circles = svg.selectAll("circle") .data(data) .attr("cx", d=>d.x) .attr("cy", d=>d.y) .attr("r", 2) .style("fill", "teal"); d3.select("body") .append(() => svg.node())

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Default
each with setAttribute
setAttribute with loop
Detached

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation.

**Benchmark Overview**

The benchmark is designed to measure the performance of three different approaches for binding data attributes to DOM elements in D3.js. The test creates a series of circles with random positions and sizes, and then binds the data attributes using various methods.

**Test Cases**

There are four test cases:

1. **Default**: This is the default way of binding data attributes to DOM elements using `d3.select()` and `.attr()`.
2. **each with setAttribute**: In this approach, the `.each()` method is used to iterate over the data array and bind the attributes individually using `setAttribute()`. This method is less efficient than the default approach.
3. **setAttribute with loop**: Similar to the previous test case, but instead of using a single call to `setAttribute()`, it uses a loop to iterate over the data object's properties and bind each attribute individually.
4. **Detached**: In this test case, the SVG element is detached from the DOM before binding the data attributes. This approach can be useful for specific use cases where the SVG needs to be reused or modified outside of the D3.js context.

**Library: D3.js**

D3.js (Data-Driven Documents) is a popular JavaScript library used for producing dynamic, interactive data visualizations in web browsers. The library provides a wide range of tools and methods for manipulating HTML documents, including selection, event handling, and data binding.

In this benchmark, D3.js is used to create the SVG elements and bind the data attributes. The `d3.select()` method is used to select the DOM element(s) to which the data should be bound, and the `.attr()` method is used to set the attribute values.

**Special JS Feature/Syntax**

None of the test cases use any special JavaScript features or syntax beyond what's standard in modern JavaScript. However, it's worth noting that the `d3.select()` method uses a proprietary query language to select DOM elements, which may not be familiar to all developers.

**Pros and Cons of Each Approach**

Here's a brief summary of the pros and cons of each approach:

1. **Default**: Most efficient approach, as it leverages D3.js' optimized selection and attribute-setting mechanisms.
	* Pros: Fastest execution times
	* Cons: May not be suitable for use cases where the data needs to be modified or extended outside of D3.js
2. **each with setAttribute**: Less efficient than the default approach, as it uses an additional iteration over the data array and attribute-setting method.
	* Pros: More control over attribute binding and modification
	* Cons: Slower execution times compared to the default approach
3. **setAttribute with loop**: Similar to the previous test case, but with a loop-based approach that may be less efficient due to the overhead of iteration.
	* Pros: Can provide more fine-grained control over attribute binding and modification
	* Cons: Slowest execution times among the three approaches
4. **Detached**: May be useful in certain use cases where the SVG needs to be reused or modified outside of D3.js, but at the cost of slower execution times due to the overhead of detaching and reattaching the SVG element.
	* Pros: Can provide more flexibility in certain scenarios
	* Cons: Slower execution times compared to the default approach

**Benchmark Results**

The latest benchmark results show that the default approach is still the fastest, followed by the `each with setAttribute` approach, and then the `setAttribute with loop` approach. The **Detached** approach has the slowest execution times.

In summary, this benchmark demonstrates the importance of choosing an efficient data binding approach in D3.js, as it can significantly impact the performance of your visualization or application.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36

Browser/OS: Chrome 93 on Linux

View result in a separate tab

Test name	Executions per second
Default	11634.0 Ops/sec
each with setAttribute	10301.4 Ops/sec
setAttribute with loop	10070.6 Ops/sec
Detached	8970.6 Ops/sec

Related benchmarks:

Multiple Attributes Performance (version: 0)

Comparing performance of: Default vs each with setAttribute vs setAttribute with loop vs Detached

Created: 4 years ago by: Guest

Jump to the latest result

Default

each with setAttribute

setAttribute with loop

Detached

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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