var string = "passw)odas4gsdfsdf";
var string = "passw)odas4gsdfsdf";
let isPasswordValid = /(?=.*[0-9])/.test(string);
let isPasswordValid = false;
for (let i = 0; i < string.length; i++)
{
if (string[i] >= '0' && string[i] <= '9')
{
isPasswordValid = true;
break;
}
}
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
RegEx | |
For Loop |
Test name | Executions per second |
---|---|
RegEx | 8804039.0 Ops/sec |
For Loop | 476523.8 Ops/sec |
I'd be happy to explain the benchmark and its options.
Benchmark Overview
The benchmark is designed to compare the performance of two approaches for validating a password: using a regular expression (RegEx) versus a traditional for loop. The benchmark creates a sample string containing a mixed set of characters, including digits, letters, and special characters.
Options Compared
There are two options compared in this benchmark:
Pros and Cons
RegEx:
Pros:
Cons:
For Loop:
Pros:
Cons:
Library Usage
The benchmark uses a library to create and prepare the sample string: string
. The exact implementation is not shown in the provided JSON, but it's likely that this library provides a convenient way to generate and manipulate strings.
Special JS Features/Syntax
There are no special JavaScript features or syntax mentioned in the benchmark. However, it's worth noting that some modern JavaScript engines, like V8 (used by Chrome), have optimized regular expressions for better performance.
Other Alternatives
If you're looking for alternative approaches to this benchmark, here are a few options:
String.prototype.match()
or String.prototype.search()
. These methods might offer better performance than RegEx, but they may also have different behavior and limitations.Overall, this benchmark provides a simple and straightforward way to compare the performance of two common approaches for validating passwords.