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String() vs .toString() vs template string vs add to string
(version: 0)
Comparing performance of:
String() vs .toString() vs template string vs add to string
Created:
2 years ago
by:
Guest
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Tests:
String()
let nums = []; for(let i = 0; i < 100; ++i) { nums.push(String(i)); }
.toString()
let nums = []; for(let i = 0; i < 100; ++i) { nums.push(i.toString()); }
template string
let nums = []; for(let i = 0; i < 100; ++i) { nums.push(`${i}`); }
add to string
let nums = []; for(let i = 0; i < 100; ++i) { nums.push(i + ""); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
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Test case name
Result
String()
.toString()
template string
add to string
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the provided benchmark and explain what is being tested. **Overview** The benchmark compares the performance of four different methods for converting numbers to strings: 1. `String()` 2. `.toString()` 3. Template literals (`template string`) 4. String concatenation with the `+` operator (`add to string`) **What's being tested?** In each test case, 100 numbers are pushed onto an array using one of the four methods. The benchmark measures how many times each method can be executed per second. **Options compared** The options being compared are: * `String()`: The built-in `String()` function converts a value to a string. * `.toString()`: The `toString()` method is called on an object or primitive value, converting it to a string. * Template literals (`template string`): A new way of creating strings using backticks (``) and expressions inside them. * String concatenation with the `+` operator (`add to string`): The `+` operator is used to concatenate two or more values together. **Pros and Cons** Here's a brief overview of each method: * **String()**: Fast and efficient, but can be less readable when used as a function. * `.toString()`: May incur additional overhead due to the method call, making it slower than `String()` for simple conversions. However, it provides more flexibility and is often used in more complex scenarios. * **Template literals** (`template string`): Offers improved readability and performance compared to concatenation with `+`. It's a newer feature that has gained popularity in modern JavaScript development. * **String concatenation with the `+` operator** (`add to string`): The oldest method, which is still widely supported. However, it can be error-prone and slow for large numbers of concatenations. **Library usage** In this benchmark, none of the libraries are explicitly used. All tests create an empty array and push values onto it using one of the four methods. **Special JS features** There's no mention of special JavaScript features or syntax in the provided explanation. If you're interested in learning more about specific features, feel free to ask! **Other alternatives** If you'd like to explore other alternatives, here are a few options: * **Array.prototype.join()**: Instead of pushing values onto an array and then joining them, you can use `join()` on an empty array. * **Spread syntax**: You can also use the spread operator (`...`) to create an array from individual values. Let me know if you have any further questions or if there's anything else I can help with!
Related benchmarks:
string vs template vs toString
number to string: template literal vs toString vs string literal concat vs string constructor
String() primitive vs template literal interpolation for representing a number as a string
Concatenation vs Template String
number to string: template literal vs toString vs string literal concat vs string constructor(2)
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