<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>
window.foo = {animal: 'dog', age: 7, breed: 'Chihuahua'};
window.bar = {animal: 'cat', age: 12, breed: 'Kiltro'};
_.isEqual(window.foo, window.bar)
JSON.stringify(window.foo) === JSON.stringify(window.bar);
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
_.isEqual | |
JSON.stringify |
Test name | Executions per second |
---|---|
_.isEqual | 752694.6 Ops/sec |
JSON.stringify | 638293.1 Ops/sec |
Let's break down the provided benchmark and explain what is being tested.
Benchmark Overview
The benchmark compares two approaches for equality comparison:
_.isEqual
from the Lodash library, which is a higher-order function that takes two values as input and returns a boolean indicating whether they are equal.JSON.stringify
with a manual comparison using the ===
operator, which converts both objects to strings and then compares them.Options Compared
The benchmark tests the following options:
_.isEqual
) vsJSON.stringify
)Pros and Cons of Each Approach:
JSON.stringify
):Library: Lodash
Lodash is a popular JavaScript utility library that provides various functions for tasks such as:
_.isEqual
)In this benchmark, Lodash's _.isEqual
function is used to compare two objects for equality.
Special JS Feature or Syntax: None
There are no special JavaScript features or syntaxes being tested in this benchmark. The focus is solely on comparing the performance of two different approaches for equality checks.
Other Alternatives
If you're looking for alternative libraries or implementations for equality checks, some options include:
JSON.stringify
with a custom comparison function (e.g., using a library like json-stringify-safe
)fast-equal
, deep-equal
, or should
Object.is()
(available in modern browsers and Node.js)