Benchmark: Object to FormData form - forEach vs reduce vs for..in

Script Preparation code:

var sampleObject = {
    "buttonText": "test",
    "codeType": "NO_CODE",
    "comment": "test",
    "content": "",
    "couponCode": "test",
    "couponImage": {
        "objectURL": {
            "changingThisBreaksApplicationSecurity": "blob:http://localhost:4200/525f5507-fa5d-4f34-af0a-39d7579ff4c1"
        }
    },
    "couponImageBig": {
        "objectURL": {
            "changingThisBreaksApplicationSecurity": "blob:http://localhost:4200/24fb3352-d37c-4272-9e62-41c1f6032b7d"
        }
    },
    "discount": "test",
    "endDate": "2021-08-31 22:00:00.000",
    "priority": 3,
    "startDate": "2021-08-26 22:00:00.000",
    "title": "test",
    "type": "STANDARD",
    "urlTerms": "test",
    "urlTermsAndroid": "test",
    "urlTermsHuawei": "test",
    "urlTermsIos": "test",
    "urlWebViewAndroid": "test",
    "urlWebViewHuawei": "test",
    "urlWebViewIos": "test"
}

Tests:

forEach
const sampleFormData = new FormData(); Object.keys(sampleObject).forEach(key => sampleFormData.append(key, sampleObject[key]));
reduce
const sampleFormData = sampleObject => Object.keys(sampleObject).reduce((formData, key) => { formData.append(key, sampleObject[key]); return formData; }, new FormData()); const sampleFormDataObj = sampleFormData(sampleObject);
for..in
const sampleFormData = new FormData(); for (const key in sampleObject) { sampleFormData.append(key, sampleObject[key]); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
forEach
reduce
for..in

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

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

**Benchmark Overview**

The test compares three ways to convert an object into a `FormData` object:

1. Using a `forEach` loop
2. Using the `reduce()` method
3. Using a traditional `for...in` loop

**What is FormData?**

`FormData` is a JavaScript interface that allows you to create a form data object from key-value pairs, similar to how HTML forms work. It's commonly used for making HTTP requests with file uploads.

**Test Case Explanation**

Here's what each test case does:

1. `forEach`: Iterates over the object keys using `Object.keys()` and appends each value to the `FormData` object using `append()`.
2. `reduce`: Uses the `reduce()` method to iterate over the object keys and append values to the `FormData` object.
3. `for...in`: Iterates over the object properties using `for...in` and appends each value to the `FormData` object.

**Pros and Cons of Each Approach**

1. **forEach**:
	* Pros: Simple, concise code.
	* Cons: Can be slower due to function call overhead.
2. **reduce()**:
	* Pros: More concise and expressive than `for...in`.
	* Cons: Requires understanding of the `reduce()` method and can be less readable.
3. **for...in**:
	* Pros: Well-established, widely supported syntax.
	* Cons: Can lead to polluting the object prototype with unnecessary properties.

**Library Usage**

None of these tests explicitly use a library, but if you're using a JavaScript framework or library that provides `FormData` support (e.g., React, Angular), it's essential to consider how those libraries might influence performance or behavior.

**Special JS Features/Syntax**

The test doesn't specifically target any advanced JavaScript features or syntax. However, it does demonstrate the use of modern JavaScript methods like `Object.keys()`, `reduce()`, and `for...in`.

**Alternatives**

Other alternatives for converting objects to `FormData` include:

* Using a library like [js-cookie](https://github.com/js-cookie/js-cookie) or [form-data](https://github.com/fedcorbett/form-data), which can simplify the process.
* Utilizing browser APIs like the `FileReader` API, which allows you to read file contents directly from the DOM.

Keep in mind that these alternatives might introduce additional overhead or dependencies, so it's essential to weigh their trade-offs against the performance benefits of using native JavaScript methods.

Related benchmarks:

Object to FormData form - forEach vs reduce vs for..in (version: 0)

Comparision between three ways of converting object to FormData form

Comparing performance of: forEach vs reduce vs for..in

Created: 4 years ago by: Registered User

Jump to the latest result

forEach

reduce

for..in

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):