<script src="lodash.js"></script>
var array = [Array(10000).keys()];
for (let i = 0; i < array.size; i++) {
array.delete(array.keys().next().value);
if (i > 1000 - 1) break;
}
array.slice(-9000)
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
For | |
Array.prototype.slice |
Test name | Executions per second |
---|---|
For | 15862020.0 Ops/sec |
Array.prototype.slice | 342149.5 Ops/sec |
I'll break down the benchmark definition and test cases for you.
Benchmark Definition:
The benchmark measures two different approaches to remove elements from an array in JavaScript:
for
loop to iterate over the array, delete each element, and check if it's time to stop after removing 1000 elements.slice()
method to create a new array with a subset of the original array's elements.Options Compared:
The benchmark compares the performance of these two approaches on an array of 10,000 elements.
Pros and Cons of Each Approach:
Array.prototype.findIndex()
).slice()
call).Library Used:
The benchmark uses the popular JavaScript utility library, Lodash. Specifically, it relies on the Array.prototype.keys()
method and Array.prototype.next()
method (which is supported in modern browsers).
Special JS Feature/Syntax:
The benchmark does not use any special JavaScript features or syntax beyond what's commonly used in web development.
Other Considerations:
When creating benchmarks like this, it's essential to consider the following:
Alternatives:
If you're interested in creating similar benchmarks, consider exploring the following alternatives:
micro-bench