Benchmark: string-interpolation-vs-vs-join

Script Preparation code:

var luckyNumber = Math.round(Math.random() * 100);
var result = '';

Tests:

string-interpolation
result = `your lucky number for today is: ${luckyNumber}`
string-join
result = ['your lucky number for today is:', luckyNumber].join(' ');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
string-interpolation
string-join

Fastest: N/A

Slowest: N/A

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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Let's break down the provided JSON data and explain what's being tested.

**Benchmark Overview**

The `MeasureThat.net` benchmark tests two approaches for string concatenation in JavaScript: template literals (string-interpolation) and the `join()` method.

**Template Literals (String Interpolation)**

Template literals are a feature introduced in ECMAScript 2015 (ES6). They allow you to embed expressions inside string literals, using backticks (`) instead of double quotes (`"`) or single quotes ('').

The test case uses the `luckyNumber` variable, which is randomly generated and assigned a value between 0 and 100. The benchmark definition code:
```javascript
result = `your lucky number for today is: ${luckyNumber}`;
```
Here, the backtick (`) is used to create a template literal, and the expression `${luckyNumber}` is embedded inside it. This allows you to insert the value of `luckyNumber` directly into the string.

**join() Method**

The other test case uses the `join()` method, which concatenates an array of strings with a specified separator (in this case, a space). The benchmark definition code:
```javascript
result = ['your lucky number for today is:', luckyNumber].join(' ');
```
Here, an array containing two elements is created: the first element is a string literal, and the second element is the `luckyNumber` variable. The `join()` method concatenates these two strings with a space separator.

**Options Compared**

The benchmark compares the performance of:

1. Template literals (string-interpolation)
2. The `join()` method

**Pros and Cons:**

* **Template Literals:**
	+ Pros:
		- More readable and concise code
		- Can be used with expressions, making it more flexible
	+ Cons:
		- May have performance overhead due to the need for parsing expressions
		- Not supported in older JavaScript engines (e.g., Internet Explorer)
* **Join() Method:**
	+ Pros:
		- Generally faster and more efficient than template literals
		- Widely supported across older and modern browsers
	+ Cons:
		- Less readable code, as it requires array creation and method invocation

**Library/Feature Description**

No external libraries are used in this benchmark.

**Special JS Feature/Syntax**

Template literals (string-interpolation) is a special JavaScript feature introduced in ES6. It allows you to embed expressions inside string literals using backticks (`).

Other alternatives for string concatenation include:

1. **Concatenation operator (`+`)**: e.g., `result = 'your lucky number for today is: ' + luckyNumber;`
2. **String formatting methods**: e.g., `result = String('your lucky number for today is: ') + luckyNumber;`
3. **Regular expressions**: e.g., `result = 'your lucky number for today is: ' + RegExp.prototype.replace('', luckyNumber);`

These alternatives are not tested in this benchmark, but they can be used as alternatives to template literals and the `join()` method depending on the specific use case.

Related benchmarks:

string-interpolation-vs-vs-join (version: 0)

Comparing performance of: string-interpolation vs string-join

Created: 4 years ago by: Guest

Jump to the latest result

string-interpolation

string-join

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):