var list = [],
n = 0,
node = document.createElement('div');
while(true) {
n++;
node.append('asdf');
if(n===100000)
break;
}
var list = [],
n = 0,
node = document.createElement('div'),
textNode = document.createTextNode('asdf')
while(true) {
n++;
node.append(textNode.cloneNode(true));
if(n===100000)
break;
}
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
With just append | |
createTextNode with clone |
Test name | Executions per second |
---|---|
With just append | 19.1 Ops/sec |
createTextNode with clone | 15.0 Ops/sec |
Let's break down the provided benchmark and explain what is being tested, the different approaches compared, their pros and cons, and other considerations.
What is being tested?
The benchmark measures the performance of two different approaches when appending or cloning nodes to an HTML element. The test cases compare the execution speed of:
div
node with text content using the append()
method.textNode
object using document.createTextNode()
, and then appending its cloned version to the node using cloneNode(true)
.Options compared
The benchmark compares the performance of two approaches:
append()
method to add nodes or text content to an element.textNode
object and then appending its cloned version to the node using cloneNode(true)
.Pros and Cons
With just append:
Pros:
Cons:
CreateTextNode with clone:
Pros:
Cons:
textNode
) and cloning its contents, which can lead to slower performance due to memory allocation and copying.Other considerations
document.createElement('div')
as a container element for testing. This might affect the results if the specific implementation of the append()
method in different browsers or engines is optimized for this particular use case.n === 100000
. While this provides a high number of iterations, it may not accurately represent real-world scenarios where the number of iterations might be much lower.Library/External dependencies
The benchmark uses no external libraries. However, it does rely on the browser's DOM API for creating elements and manipulating text content.
Special JS feature/syntax
There is no special JavaScript feature or syntax used in this benchmark. The code follows standard JavaScript syntax and utilizes only built-in features available across most browsers.
Alternatives
Other approaches to testing similar performance benchmarks might include:
span
, p
) for appending text contentinnerHTML
instead of append()
)Keep in mind that the specific approach and test cases used might depend on the goals and requirements of the benchmark.