<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
var x = 5.236;
_.round(x / 0, 2);
Math.round(x / 0);
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Round floating number using lodash round function | |
Round floating number using toFixed() |
Test name | Executions per second |
---|---|
Round floating number using lodash round function | 1105040.6 Ops/sec |
Round floating number using toFixed() | 5918113.0 Ops/sec |
Let's break down what's being tested on the provided JSON.
Benchmark Definition
The benchmark compares two approaches for rounding floating-point numbers:
_.round(x / 0, 2)
using the Lodash libraryMath.round(x / 0)
(note: this will actually throw a division by zero error, but we're testing it anyway)Options Compared
In both cases, a single division operation is performed on the variable x
, which is initialized to 5.236
. The rounding method is then applied.
Pros and Cons
Lodash .round()
Pros:
Cons:
JavaScript Math.round()
Pros:
Cons:
Other Considerations
.round()
will return NaN, while JavaScript Math.round()
will throw an error..round()
might be a better choice.Library and Syntax
The Lodash library is a popular utility library for JavaScript. It provides various functions for tasks like string manipulation, array manipulation, and mathematical operations (like rounding). In this case, the _.round()
function is used to round a floating-point number.
There are no special JavaScript features or syntax mentioned in this benchmark. If you're interested in exploring such features, there are many other benchmarks available on MeasureThat.net!