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new Image vs img
(version: 1)
Comparing performance of:
new Image vs document.createElement
Created:
one year ago
by:
Guest
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Tests:
new Image
new Image
document.createElement
document.createElement('img')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
new Image
document.createElement
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (X11; CrOS x86_64 14541.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36
Browser/OS:
Chrome 132 on Chrome OS 14541.0.0
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<iframe src="https://measurethat.net/Embed?id=603822" width="100%" height="500px"></iframe>
Test name
Executions per second
new Image
735947.9 Ops/sec
document.createElement
750802.2 Ops/sec
Autogenerated LLM Summary
(model
gpt-4o-mini
, generated one year ago):
The benchmark defined in the provided JSON compares two different approaches to creating image elements in web development: using the `new Image()` constructor versus using `document.createElement('img')`. ### Test Cases Explained 1. **`new Image`** - This benchmark tests the performance of creating a new image instance using the `Image` constructor, which is a built-in JavaScript function. When you use `new Image()`, it creates a new HTMLImageElement, which is specifically optimized for images. 2. **`document.createElement('img')`** - This benchmark tests the creation of an image element using the `document.createElement` method, which is a general-purpose method for creating any kind of HTML element. When you pass `'img'` as an argument, it creates an <img> element in the DOM. ### Performance Results In the performed benchmarks: - The `document.createElement('img')` method achieved approximately **750,802.25** executions per second. - The `new Image()` method achieved approximately **735,947.875** executions per second. From these results, we see that `document.createElement('img')` performs slightly better than `new Image()` in this particular test case. ### Pros and Cons of Each Approach #### 1. `new Image()` **Pros:** - Specific to images; clearer intention when code is read. - Potentially slight optimizations for image loading behavior. **Cons:** - Minor performance trade-off compared to `document.createElement` as indicated by benchmark results. - Less flexibility if additional attributes or complex structures need to be set right upon creation. #### 2. `document.createElement('img')` **Pros:** - More versatile; can create elements for other HTML tags beyond just images. - Allows setting attributes and styles in a more standard way for complex creations (e.g., using chaining methods like `.setAttribute()`). **Cons:** - Slightly lower readability for someone looking specifically to create images. - Could introduce additional overhead if not optimized, though this is highly contextual. ### Other Considerations **Use Case Context**: While performance is a consideration, the choice between these two approaches might come down to specific use cases. For applications heavily relying on dynamic image loading—such as galleries or image sliders—one might prefer the approach with better performance. However, code clarity and maintainability should not be overlooked. **Alternatives**: Other alternatives for creating image elements include using frameworks or libraries like React or Vue.js, which handle DOM manipulations more abstractly and might provide additional benefits like virtual DOM diffing. However, for pure performance and simplicity, `new Image()` and `document.createElement()` are more straightforward. In conclusion, both methods have their benefits and drawbacks. Choosing the best approach to creating image elements depends on the specific needs of the project, keeping in mind performance, readability, and the intended use of the elements.
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