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element.style.cursor
(version: 0)
Comparing performance of:
naive vs smart
Created:
4 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<div id="foo" style="cursor: grid;"></div>
Tests:
naive
var element = document.getElementById("foo"); var i = 100000; while (i--) { if (i % 1000 === 0) { element.style.cursor = "default"; } else { element.style.cursor = "grid" }; }
smart
var element = document.getElementById("foo"); var i = 100000; while (i--) { if (i % 1000 === 0) { element.style.cursor = "default"; } else if(element.style.cursor !== "grid") { element.style.cursor = "grid" }; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
naive
smart
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark test cases and explain what is being tested. **Benchmark Definition** The benchmark definition consists of three parts: 1. **Script Preparation Code**: This section is empty, which means that no specific JavaScript code needs to be executed before running the benchmark. In other words, the script starts with a clean slate. 2. **Html Preparation Code**: This section defines an HTML snippet that will be used as input for the benchmark. It creates a `<div>` element with the ID "foo" and sets its `cursor` style to "grid". 3. **Benchmark Definition**: This is the actual code that defines the test case. **Test Cases** There are two test cases: "naive" and "smart". Both test cases use a while loop to update the cursor style of the HTML element. The difference lies in how they handle the transition between "grid" and "default" cursors: * **Naive Approach**: In this approach, the cursor is set to "default" every 1000 iterations, and then set back to "grid" on the next iteration. This means that the cursor will rapidly switch between these two values, potentially causing a noticeable performance impact. * **Smart Approach**: In this approach, the cursor is only updated when it's not already in the "grid" state. If the cursor is already "grid", it remains in that state until the condition changes. This approach appears to be more efficient because it minimizes the number of times the cursor style needs to be updated. **Pros and Cons** * **Naive Approach**: + Pros: Easy to understand and implement. + Cons: Can result in a high number of unnecessary cursor updates, potentially impacting performance. * **Smart Approach**: + Pros: Reduces unnecessary cursor updates, which can improve performance. + Cons: Requires more complex logic to handle the conditional update. **Library** There doesn't appear to be any specific library used in these test cases. However, it's likely that the `document` object and the `style` property are part of the standard DOM API. **Special JS Features or Syntax** None of the provided benchmark definitions use any special JavaScript features or syntax beyond the standard language features.
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