<input type="checkbox" value="x" name="test1" id="test1">
<input type="checkbox" value="y" name="test2" id="test2" checked>
var x = $('#test1');
var y = $('#test2');
x.prop('checked');
y.prop('checked');
x.is(':checked');
y.is(':checked');
x[0].checked;
y[0].checked;
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Not checked - $.prop | |
Checked - $.prop | |
Not checked - $.is | |
Checked - $.is | |
Not checked - vanilla js property | |
Checked - vanilla js property |
Test name | Executions per second |
---|---|
Not checked - $.prop | 4031073.5 Ops/sec |
Checked - $.prop | 4074724.8 Ops/sec |
Not checked - $.is | 939704.9 Ops/sec |
Checked - $.is | 914504.9 Ops/sec |
Not checked - vanilla js property | 10985625.0 Ops/sec |
Checked - vanilla js property | 10943726.0 Ops/sec |
Let's break down the benchmark and its various components.
Benchmark Purpose The main goal of this benchmark is to compare different ways of checking if a checkbox is checked in JavaScript. The test cases aim to measure which approach is faster, more efficient, or both.
Options Compared
checked
for a checkbox). It's a convenient way to check if an element has a certain attribute.:checked
). This method is useful when you need to perform additional actions based on the state of the checkbox.checked
property directly on the element.Pros and Cons
Library: jQuery
jQuery is a popular JavaScript library that simplifies DOM manipulation and event handling. In this benchmark, it's used to provide the $
symbol, which allows developers to access and manipulate HTML elements more easily. The $.prop()
and $.is()
methods are part of jQuery's API.
Special JS Feature/Syntax There doesn't seem to be any special JavaScript feature or syntax mentioned in the benchmark. However, it's worth noting that using libraries like jQuery can introduce additional complexity and potential performance overhead due to the added functionality.
Other Alternatives
If you don't want to use a library like jQuery, you could consider alternative approaches:
Element[0].checked
or Element.checked
) for simplicity and potentially better performance.useState
hook for state management).In summary, this benchmark compares three approaches to checking if a checkbox is checked: jQuery methods ($.prop()
and $.is()
) versus native JavaScript using vanilla property access. The results will help developers understand the relative performance characteristics of these options.