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change css property
(version: 3)
Comparing performance of:
setProperty method vs set property vs change cssText vs add cssText vs change multi cssText vs setAttribute method vs multi setAttribute method
Created:
4 years ago
by:
Registered User
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HTML Preparation code:
<div id='id'></div>
Script Preparation code:
var el = document.getElementById('id');
Tests:
setProperty method
el.style.setProperty('font-size', '14px') el.style.setProperty('color', 'blue') el.style.setProperty('font-size', '16px') el.style.setProperty('color', 'red')
set property
el.style.fontSize = '14px' el.style.color = 'blue' el.style.fontSize = '16px' el.style.color = 'red'
change cssText
el.style.cssText = 'font-size: 14px; color: red' el.style.cssText = 'font-size: 14px; color: blue' el.style.cssText = 'font-size: 16px; color: blue' el.style.cssText = 'font-size: 16px; color: red'
add cssText
el.style.cssText += 'font-size: 14px' el.style.cssText += 'color: blue' el.style.cssText += 'font-size: 16px' el.style.cssText += 'color: red'
change multi cssText
el.style.cssText = 'font-size: 14px; color: blue' el.style.cssText = 'font-size: 16px; color: red'
setAttribute method
el.setAttribute('style', 'font-size: 14px; color: red') el.setAttribute('style', 'font-size: 14px; color: blue') el.setAttribute('style', 'font-size: 16px; color: blue') el.setAttribute('style', 'font-size: 16px; color: red')
multi setAttribute method
el.setAttribute('style', 'font-size: 14px; color: blue') el.setAttribute('style', 'font-size: 16px; color: red')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (7)
Previous results
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Test case name
Result
setProperty method
set property
change cssText
add cssText
change multi cssText
setAttribute method
multi setAttribute method
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 JSON and analyze each test case. **Benchmark Definition** The `Change CSS Property` benchmark is a JavaScript microbenchmark that tests various ways to change CSS properties of an HTML element using different methods. **Options Compared** Here are the options compared: 1. **setProperty method**: Using the `style` property's `setProperty()` method. 2. **set property**: Directly setting the CSS property values using arithmetic operators (e.g., `el.style.fontSize = '14px'`). 3. **change cssText**: Modifying the `cssText` property of the element to set multiple styles at once. 4. **add cssText**: Concatenating new style information to the existing `cssText`. 5. **setAttribute method**: Using the `style` attribute and setting its value using the `setAttribute()` method. 6. **multi setAttribute method**: Setting multiple values in the `style` attribute using a single call. **Pros and Cons** Here's a brief overview of each option: 1. **setProperty method**: * Pros: More concise, efficient, and readable. * Cons: May be slower due to overhead from function calls. 2. **set property**: * Pros: Simple and easy to understand. * Cons: Less flexible and may lead to performance issues with complex styles. 3. **change cssText**: * Pros: Efficient for setting multiple styles at once. * Cons: May be slower due to string manipulation, and less readable. 4. **add cssText**: * Pros: Simple and efficient for adding new style information. * Cons: Can lead to performance issues if many concatenations are performed. 5. **setAttribute method**: * Pros: More flexible than `setProperty`, as it allows multiple values in a single call. * Cons: May be slower due to function call overhead, and less readable. 6. **multi setAttribute method**: * Pros: Efficient for setting multiple values in a single call. * Cons: Less readable and may lead to performance issues if too many calls are made. **Libraries and Special Features** None of the test cases use any specific JavaScript libraries or special features, such as async/await, Promises, or Web Workers. They only rely on standard JavaScript syntax. **Other Alternatives** To provide more accurate results, it's possible to add additional test cases that cover other scenarios, such as: * Using CSS custom properties (e.g., `el.style.setProperty('--my-property', '14px')`) * Setting styles using the `CSS` object and its `ruleString` property * Testing performance with large or complex style sets By adding more test cases, you can gain a better understanding of how different methods perform in various scenarios, which can help inform design decisions and optimize web applications.
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