Benchmark: dynamic create object vs array

Tests:

dynamic create object integer value
var object = {}; object["p1"] = 1; object["p2"] = 2; object["p3"] = 3; object["p4"] = 4; object["p5"] = 5; object["p6"] = 6; object["p7"] = 7; object["p8"] = 8; object["p9"] = 9;
dynamic create array integer value
var array = []; array.push("p1",1); array.push("p2",2); array.push("p3",3); array.push("p4",4); array.push("p5",5); array.push("p6",6); array.push("p7",7); array.push("p8",8); array.push("p9",9);
dynamic create object string value
var object = {}; object["p1"] = "1"; object["p2"] = "2"; object["p3"] = "3"; object["p4"] = "4"; object["p5"] = "5"; object["p6"] = "6"; object["p7"] = "7"; object["p8"] = "8"; object["p9"] = "9";
dynamic create array string value
var array = []; array.push("p1",1); array.push("p2",2); array.push("p3",3); array.push("p4",4); array.push("p5",5); array.push("p6",6); array.push("p7",7); array.push("p8",8); array.push("p9",9);
buffered array integer values
var array = []; array.length = 18 var index = 0; array[i++] = "p1"; array[i++] = 1; array[i++] = "p2"; array[i++] = 2; array[i++] = "p3"; array[i++] = 3; array[i++] = "p4"; array[i++] = 4; array[i++] = "p5"; array[i++] = 5; array[i++] = "p6"; araay[i++] = 6; array[i++] = "p7"; araay[i++] = 7; array[i++] = "p8"; array[i++] = 8; array[i++] = "p9"; array[i++] = 9;
buffered array string value
var array = []; array.length = 18 var index = 0; array[i++] = "p1"; array[i++] = "1"; array[i++] = "p2"; array[i++] = "2"; array[i++] = "p3"; array[i++] = "3"; array[i++] = "p4"; array[i++] = "4"; array[i++] = "p5"; array[i++] = "5"; array[i++] = "p6"; array[i++] = "6"; array[i++] = "p7"; array[i++] = "7"; array[i++] = "p8"; array[i++] = "8"; array[i++] = "p9"; array[i++] = "9";

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
dynamic create object integer value
dynamic create array integer value
dynamic create object string value
dynamic create array string value
buffered array integer values
buffered array string value

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

**Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided JSON data represents a benchmark with five test cases, each testing different ways of creating an object or array in JavaScript.

**Test Cases**

The test cases are:

1. **Dynamic Create Object Integer Value**: Tests the creation of an object using bracket notation (`object["p1"] = 1;`) and assigning integer values.
2. **Dynamic Create Array Integer Value**: Tests the creation of an array using the `push()` method and assigning integer values.
3. **Dynamic Create Object String Value**: Tests the creation of an object using bracket notation (`object["p1"] = "string";`) and assigning string values.
4. **Dynamic Create Array String Value**: Tests the creation of an array using the `push()` method and assigning string values.
5. **Buffered Array Integer Values** and **Buffered Array String Value**: Test the performance of creating arrays with a fixed size (buffering) by assigning integer or string values to existing arrays.

**Performance Comparison**

The latest benchmark results show the performance of each test case across different browsers and devices. The results indicate that:

* Creating objects using bracket notation is generally faster than creating arrays.
* Assigning integer values to arrays is slower than assigning string values.
* Buffered arrays are significantly slower than dynamic arrays, especially when creating multiple elements.

**Conclusion**

The test cases provide insight into the performance of different JavaScript creation methods. The results suggest that creating objects using bracket notation and assigning string values can be faster than other methods. It's essential to consider these performance implications when optimizing code for efficiency and scalability.

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36

Browser/OS: Chrome 67 on Mac OS X 10.11.6

View result in a separate tab

Test name	Executions per second
dynamic create object integer value	727867584.0 Ops/sec
dynamic create array integer value	16134010.0 Ops/sec
dynamic create object string value	147705328.0 Ops/sec
dynamic create array string value	17575068.0 Ops/sec
buffered array integer values	0.0 Ops/sec
buffered array string value	243943.7 Ops/sec

Related benchmarks:

dynamic create object vs array (version: 0)

Comparing performance of: dynamic create object integer value vs dynamic create array integer value vs dynamic create object string value vs dynamic create array string value vs buffered array integer values vs buffered array string value

Created: 8 years ago by: Guest

Jump to the latest result

dynamic create object integer value

dynamic create array integer value

dynamic create object string value

dynamic create array string value

buffered array integer values

buffered array string value

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):