<div id="test">Testing</div>
var el = document.getElementById('test');
el.setAttribute("class", "class");
el.classList.add("class");
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
setAttribute | |
classList.add |
Test name | Executions per second |
---|---|
setAttribute | 3640391.5 Ops/sec |
classList.add | 2781681.2 Ops/sec |
I'll break down the benchmark and its various components to help you understand what's being tested.
Benchmark Overview
The provided benchmark compares two approaches: setting an attribute using setAttribute
and adding an element to the class list using classList.add
. The test is designed to measure which approach is faster in a JavaScript environment.
Options Compared
There are two options being compared:
Pros and Cons of Each Approach
setAttribute
:setAttribute
.classList.add
:Library Usage
There is no explicit library mentioned in the benchmark definition. However, classList
is a standard DOM property that allows you to work with an element's class list. It does not require any additional libraries for its functionality.
Special JS Features or Syntax
The only notable feature being tested here is the use of the classList
property, which has become increasingly common in modern web development due to its benefits over traditional attribute-based approaches.
Other Alternatives
If you're interested in alternatives or want to explore other methods:
createElement
, setAttribute
, and removeAttribute
. This approach can be more complicated, but it offers flexibility.:nth-child
) to achieve similar results without setting attributes or adding elements. However, this method might not suit all use cases.Keep in mind that each alternative has its trade-offs in terms of performance, browser support, readability, and maintainability. The choice ultimately depends on the specific requirements and constraints of your project.
Now you have a better understanding of what's being tested in the provided benchmark.