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array join vs toString js
(version: 0)
test
Comparing performance of:
join vs toString
Created:
5 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var arr = ['1','2','3','4','5','6','7','8']
Tests:
join
arr.join()
toString
arr.toString()
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
join
toString
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
10 months ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36
Browser/OS:
Chrome 136 on Mac OS X 10.15.7
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<iframe src="https://measurethat.net/Embed?id=612339" width="100%" height="500px"></iframe>
Test name
Executions per second
join
9391962.0 Ops/sec
toString
7941522.5 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Overview of the Benchmark** The provided JSON represents a JavaScript microbenchmark on MeasurThat.net, which compares the performance of two approaches for joining an array into a string: `arr.join()` and `arr.toString()`. The benchmark aims to determine which method is faster in modern browsers. **Test Cases** There are two individual test cases: 1. **`join`**: This test case uses the `join()` method to concatenate all elements of the `arr` array into a single string. 2. **`toString`**: This test case uses the `toString()` method to convert each element of the `arr` array into a string and then concatenates them. **Options Compared** The two options being compared are: * `join()`: A built-in JavaScript method that takes an iterable (like an array) as an argument and returns a new string with all elements separated by the specified separator (in this case, no separator is provided). * `toString()`: A method that converts its arguments to strings. **Pros and Cons of Each Approach** ### `join()`: Pros: * Often faster due to optimizations in the JavaScript engine. * Can be more readable for developers familiar with string concatenation. * Does not require explicit type conversions, which can lead to errors if not handled correctly. Cons: * Requires a specific separator (empty string in this case), which might not always be desired. * May not work as expected when the array contains non-string elements. ### `toString()` Pros: * Allows for more flexibility in handling different data types within the array. * Does not require a specific separator, making it easier to adapt to various use cases. Cons: * Can be slower due to additional overhead from converting elements to strings. * Requires explicit type conversions, which can lead to errors if not handled correctly. **Library Usage** None of the test cases uses any external libraries. The `arr` array is defined within the benchmark script. **Special JavaScript Features or Syntax** There are no special JavaScript features or syntax mentioned in this benchmark. **Other Alternatives** For joining arrays into strings, other approaches might include: * Using a template literal (`[...].join('')`) * Utilizing a library like Lodash (with its `join()` function) * Employing a custom implementation using a loop and string concatenation However, these alternatives are not part of the MeasurThat.net benchmark, which focuses on comparing the built-in `join()` method with `toString()`.
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