<a id="parent" >
<div><div><div></div><div><div><div></div><div><div><div>
<span id="child">Need span</span>
<div></div></div></div></div></div></div></div><div></div></div>
<svg class="icon md-16 icon-shevron-right text-muted"></svg>
</a>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js'></script>
var $element = $("#parent");
$element.find("#child");
$("#child", $element);
$("#child");
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
find with "find" | |
find with selector and scope | |
find with selector |
Test name | Executions per second |
---|---|
find with "find" | 925950.1 Ops/sec |
find with selector and scope | 710003.8 Ops/sec |
find with selector | 1499501.8 Ops/sec |
Let's dive into the provided JSON benchmark definition.
Overview
The benchmark measures which solution (find, selector, or both) is faster for finding an element in a complex HTML structure using jQuery.
Options Compared
Three options are compared:
find()
method without specifying a selector.$()
function with both a selector and the scope ($element
).$()
function only with a selector.Pros and Cons of each approach
Library Used
The jQuery
library is used for this benchmark. jQuery provides an easy-to-use API for manipulating and interacting with HTML elements in the DOM.
Special JS Feature/Syntax
None mentioned in the provided code. However, it's worth noting that the find()
method uses a recursive approach to find elements, which can lead to performance issues on large or complex DOMs.
Other Considerations
Alternatives
If you were to write a similar benchmark, you could consider using other JavaScript libraries or frameworks that provide similar functionality, such as:
querySelectorAll()
and getElementsByClassName()
.useRef
hook to store references to elements and utilize the find()
method from React's DOM library.$ref
function for storing references to elements.Keep in mind that each alternative has its own pros and cons, and the performance results may vary depending on the specific implementation and use case.