var arr = []
for (let i = 0; i < 10000; i++) {
arr.unshift(Math.random())
}
for (let i = 0; i < 10000; i++) {
arr.push(Math.random())
}
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
.unshift() | |
.push() |
Test name | Executions per second |
---|---|
.unshift() | 2.4 Ops/sec |
.push() | 358.0 Ops/sec |
Overview of the Benchmark
The provided benchmark measures the performance difference between two JavaScript methods: arr.push()
and arr.unshift()
, specifically when used to add random numbers to an array.
What is being tested?
The benchmark compares how fast it takes for each method to add 10,000 random numbers to an array. The push()
method adds elements to the end of the array, while the unshift()
method adds elements to the beginning of the array.
Options compared:
There are two options being compared:
arr.push(Math.random())
: This method adds a random number to the end of the array using the push()
method.arr.unshift(Math.random())
: This method adds a random number to the beginning of the array using the unshift()
method.Pros and Cons:
push()
method: Pros:unshift()
for large arrays.unshift()
method: Pros:Cons:
push()
method:unshift()
method:Library usage:
None of the provided benchmark code uses any external libraries. The Math.random()
function is used to generate random numbers, which is a built-in JavaScript function.
Special JS features or syntax:
No special JavaScript features or syntax are being used in this benchmark. The code only uses standard JavaScript syntax and features.
Alternatives:
Other alternatives to measure the performance difference between push()
and unshift()
methods might include:
splice()
, concat()
, or indexOf()
.Keep in mind that the choice of alternative benchmark depends on the specific use case and requirements.