function thing(e) {
switch (e) {
case 0:
return "0";
case 1:
return "1";
case 2:
return "2";
case 3:
return "3";
default:
return "";
}
}
thing(0), thing(2), thing(6)
function bounce(x)
{
if (x === 0) return "0";
if (x === 1) return "1";
if (x === 2) return "2";
if (x === 3) return "3";
return ""
}
bounce(0), bounce(2), bounce(6)
function bounce(x) {
return 0 === x ? "0" : 1 === x ? "1" : 2 === x ? "2" : 3 === x ? "3" : "";
}
bounce(0), bounce(2), bounce(6)
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
switch case | |
bounce patttern | |
ternary |
Test name | Executions per second |
---|---|
switch case | 1088331136.0 Ops/sec |
bounce patttern | 1096303872.0 Ops/sec |
ternary | 1099734656.0 Ops/sec |
Let's break down the provided JSON data and explain what's being tested.
Benchmark Definition
The benchmark is comparing three different approaches to achieve the same result:
switch
statement to check the input value against multiple cases. If the value matches one of the cases, it returns a corresponding string.?:
) to check the input value and return a corresponding string.Options Compared
The benchmark is comparing these three approaches to determine which one is the most efficient (i.e., executes fastest). The benchmark measures the number of executions per second for each approach, which indicates how many times the function can execute in one second.
Pros and Cons
Here's a brief summary of the pros and cons of each approach:
switch
statement.Library
There is no library explicitly mentioned in the provided JSON data. However, the benchmark uses a common JavaScript feature: switch
statements and if-else chains.
Special JS Features/Syntax
The benchmark does not use any special or advanced JavaScript features beyond what's considered standard.
Alternatives
If you were to rewrite these benchmarks using different approaches, here are some alternatives:
switch
statement or if-else chain, you could use regular expressions to match the input value.indexOf()
or findIndex()
to search for the input value in an array of values.These alternatives would likely have different performance characteristics and trade-offs compared to the original approaches used in the benchmark.