Benchmark: JQuery.grep vs Array.find

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js'></script>

Script Preparation code:

var array = [{id: "1", name: "1"}, {id: "2", name: "2"}, {id: "3", name: "3"}, {id: "4", name: "4"}, {id: "5", name: "5"}]
var needId = "3";

Tests:

$.grep
$.grep(array, function (element) { return element.id === needId; })[0];
Array.find
array.find(function (element) { return element.id === needId; });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
$.grep
Array.find

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and their pros and cons.

**Benchmark Definition**

The website `MeasureThat.net` provides a JSON definition for the benchmark:

```json
"Name": "JQuery.grep vs Array.find",
"Description": "Compare how to find need element with different functions",
```

This benchmark compares two approaches to find an element in an array: jQuery's `.grep()` method and JavaScript's `Array.prototype.find()` method.

**Script Preparation Code**

The script preparation code defines the test data:

```javascript
var array = [
  { id: "1", name: "1" },
  { id: "2", name: "2" },
  { id: "3", name: "3" },
  { id: "4", name: "4" },
  { id: "5", name: "5" }
];

var needId = "3";
```

This script creates an array of objects and defines a `needId` variable with the value `"3"`.

**Html Preparation Code**

The HTML preparation code includes jQuery library:

```javascript
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js'></script>
```

This code loads the jQuery library from a CDN, which is used by the `.grep()` method.

**Individual Test Cases**

There are two test cases:

1. **$.grep**

```javascript
$.grep(array, function (element) {
  return element.id === needId;
});
```

This test case uses the jQuery `.grep()` method to find an element in the `array` that matches the `needId`. The `$.grep()` method is a wrapper around the standard JavaScript `filter()` method.

2. **Array.find**

```javascript
array.find(function (element) {
  return element.id === needId;
});
```

This test case uses the JavaScript `Array.prototype.find()` method to find an element in the `array` that matches the `needId`. The `find()` method returns the first element that satisfies the provided callback function.

**Pros and Cons**

Here are some pros and cons of each approach:

1.  **$.grep:**

*   Pros:
        *   Widely supported by libraries like jQuery, Lodash, or Ramda.
        *   Often more readable than native JavaScript code for simple filters.
    *   Cons:
        *   Can be slower due to the overhead of a wrapper function and the need to access the global jQuery object.
        *   May not be as efficient as using the standard `filter()` method directly.

2.  **Array.find:**

*   Pros:
        *   Native JavaScript implementation, which can result in better performance compared to wrapper functions like `.grep()`.
        *   More direct and efficient than using a wrapper function or library.
    *   Cons:
        *   Less widely supported by libraries compared to `.grep()` methods.

**Other Considerations**

1.  **Library Usage:** jQuery's `.grep()` method uses the `filter()` method, which is also available on native arrays in JavaScript. The usage of a library like jQuery can be beneficial when working with older browsers or projects that don't support modern JavaScript features.
2.  **Feature Support:** If you need to use the `find()` method directly, you might miss out on the convenience and readability offered by libraries like Lodash.

**Alternatives**

If you're looking for alternative approaches to find an element in an array:

1.  **Native Array.prototype.filter():**

```javascript
array.filter(function (element) {
  return element.id === needId;
});
```

This approach is a direct and efficient way to filter elements in an array.

2.  **Lodash's `filter()` method:**

```javascript
const _ = require('lodash');

_.filter(array, function (element) {
  return element.id === needId;
});
```

Lodash provides a convenient wrapper around the native `filter()` method with additional features and options.

3.  **Ramda's `filter()` method:**

```javascript
const R = require('ramda');

R.filter(array, function (element) {
  return element.id === needId;
});
```

Ramda provides a functional programming approach to filtering arrays using its own `filter()` method.

Latest run results:

Run details: (Test run date: 10 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser/OS: Chrome 130 on Windows

View result in a separate tab

Test name	Executions per second
$.grep	1171339.4 Ops/sec
Array.find	2279729.0 Ops/sec

Related benchmarks:

JQuery.grep vs Array.find (version: 0)

Compare how to find need element with different functions

Comparing performance of: $.grep vs Array.find

Created: 4 years ago by: Guest

Jump to the latest result

$.grep

Array.find

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):