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Multiple Attributes
(version: 1)
Comparing performance of:
Default vs each with setAttribute vs setAttribute with loop
Created:
6 years ago
by:
Registered User
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HTML Preparation code:
<script src="https://d3js.org/d3.v5.min.js"></script>
Tests:
Default
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(null) .data(data) .enter() .append("circle") .attr("cx", d=>d.x) .attr("cy", d=>d.y) .attr("r", 2) .style("fill", "teal");
each with setAttribute
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(null) .data(data) .enter() .append("circle") .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(100).map(() => ({ cx: Math.random() * 300, cy: Math.random() * 150, r: 2 })); const svg = d3.select("body") .append("svg"); const circles = svg.selectAll(null) .data(data) .enter() .append("circle") .each((d, i, n) => { for(let key in d){ n[i].setAttribute(key, d[key]) } }) .style("fill", "teal")
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Default
each with setAttribute
setAttribute with loop
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Benchmark Explanation** The provided benchmark measures the performance of creating and rendering circles in a SVG element using D3.js library. There are three test cases: 1. **Default**: This is the baseline test case where D3.js's built-in methods (`attr()` and `style()`) are used to set the attributes and styles of the circles. 2. **each with setAttribute**: In this test case, the `setAttribute()` method is used on each element individually, instead of using the built-in `attr()` method. This approach requires more DOM manipulations and may lead to slower performance. 3. **setAttribute with loop**: Similar to the previous test case, but an additional `for...in` loop is used to set the attributes of each element. **Pros and Cons** * **Default**: + Pros: Built-in methods are optimized for performance, fewer DOM manipulations. + Cons: May not work as expected if custom attribute names or data structures are used. * **each with setAttribute**: + Pros: More control over the rendering process, can be useful when working with complex data structures. + Cons: Requires more DOM manipulations and may lead to slower performance due to increased overhead. * **setAttribute with loop**: + Pros: Provides even more control over the rendering process but at the cost of even more DOM manipulations. + Cons: May be the slowest option due to the added complexity. **D3.js Library** The D3.js library (Data-Driven Documents) is a JavaScript library for producing dynamic, interactive data visualizations in web browsers. It provides a powerful API for creating SVG elements, manipulating their attributes and styles, and rendering data-driven graphics. In this benchmark, D3.js's built-in methods (`attr()` and `style()`) are used to set the attributes and styles of the circles, while the custom implementations use the `setAttribute()` method directly on each element. **Other Considerations** * **DOM Manipulation**: The performance of creating and rendering SVG elements can be affected by the number of DOM manipulations required. In this benchmark, all three test cases require some level of DOM manipulation, but the default option uses built-in methods that are optimized for performance. * **Data Structure**: The structure of the data being rendered can also impact performance. In this case, the data is an array of objects with random values. **Alternatives** If you need to create and render SVG elements with different performance characteristics, you may consider using alternative libraries or approaches: * **SVG.js**: A lightweight JavaScript library for creating and manipulating SVG elements. * **Fabric.js**: A powerful JavaScript library for working with canvas and SVG elements, including dynamic rendering and manipulation. * **Custom implementation**: Depending on the specific requirements of your project, you may need to implement a custom solution using native JavaScript or other libraries. In summary, the benchmark provides valuable insights into the performance differences between various approaches to setting attributes and styles in D3.js. Understanding these trade-offs can help developers optimize their SVG rendering code for better performance.
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