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string concatenation vs template
(version: 0)
Comparing performance of:
concat vs template
Created:
4 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var val = 1234;
Tests:
concat
'hello ' + 'hi ' + val;
template
`hello hi ${val}`
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
concat
template
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
5 months ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36 Edg/145.0.0.0
Browser/OS:
Chrome 145 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=626252" width="100%" height="500px"></iframe>
concat
204.7M/s
template
186.7M/s
View exact numbers
Test name
Executions per second
✓
concat
204,658,560 Ops/sec
template
186,707,136 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to explain what's being tested in this benchmark and the pros and cons of each approach. **What is being tested:** The provided JSON represents a JavaScript microbenchmark that compares two approaches for string concatenation: 1. **Concatenation using the `+` operator**: In this approach, strings are concatenated together using the `+` operator. 2. **Template literals**: The "template" benchmark uses template literals, which are introduced in ECMAScript 2015 (ES6). Template literals provide a more readable and efficient way to concatenate strings. **Options compared:** The benchmark is comparing two approaches: * Concatenation using the `+` operator (`concat`) * Template literals (`template`) **Pros and cons of each approach:** 1. **Concatenation using the `+` operator**: * Pros: + Widely supported across browsers and platforms. + Simple to understand and implement. * Cons: + Can lead to performance issues due to the creation of temporary strings. + May not be as readable or maintainable as other approaches. 2. **Template literals**: * Pros: + More readable and maintainable than concatenation using `+`. + Provides better performance compared to concatenating individual strings together. + Supports more features, such as expressions and interpolation. * Cons: + May not be supported in older browsers or platforms (e.g., Internet Explorer). + Requires ECMAScript 2015 (ES6) or later support. **Library used:** There is no library explicitly mentioned in the provided JSON. However, if we look at the "Benchmark Definition" section, we can see that the `val` variable is assigned a value using the `var` keyword. This suggests that the benchmark may be testing the behavior of JavaScript variables and expressions. **Special JS feature or syntax:** The benchmark uses template literals, which are a special feature introduced in ECMAScript 2015 (ES6). Template literals provide a more readable and efficient way to concatenate strings, and they support features like expression interpolation (`${expression}`) and method calls (`obj.method()`). **Alternative approaches:** Other approaches for string concatenation include: * **String.join()**: A method that joins multiple strings together using a specified separator. * **Array.prototype.concat()**: A method that concatenates arrays together, which can be used to concatenate strings. * **Using a library or framework**: Some libraries and frameworks provide optimized string concatenation methods or utilities. Overall, the benchmark is designed to compare the performance of two approaches for string concatenation: concatenating using the `+` operator and using template literals. The results provide insight into which approach is faster and more efficient in modern JavaScript environments.
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