Benchmark: Own vs jsonParse

Script Preparation code:

var obj = {
"problems": [{
    "Diabetes":[{
        "medications":[{
            "medicationsClasses":[{
                "className":[{
                    "associatedDrug":[{
                        "name":"asprin",
                        "dose":"",
                        "strength":"500 mg"
                    }],
                    "associatedDrug#2":[{
                        "name":"somethingElse",
                        "dose":"",
                        "strength":"500 mg"
                    }]
                }],
                "className2":[{
                    "associatedDrug":[{
                        "name":"asprin",
                        "dose":"",
                        "strength":"500 mg"
                    }],
                    "associatedDrug#2":[{
                        "name":"somethingElse",
                        "dose":"",
                        "strength":"500 mg"
                    }]
                }]
            }]
        }],
        "labs":[{
            "missing_field": "missing_value"
        }]
    }],
    "Asthma":[{}]
}]};
var obj2 = null;

Tests:

Json parse-stringify
var obj2 = JSON.parse(JSON.stringify(obj));
own one
var obj2 = deepCopyData(obj); function deepCopyData(data) { let node; if (Array.isArray(data)) { node = data.length > 0 ? data.slice(0) : []; node.forEach((e, i) => { if ((typeof e === 'object') || (Array.isArray(e) && e.length > 0)) { node[i] = deepCopyData(e); } }); } else if (data && typeof data === 'object') { node = Object.assign({}, data); Object.keys(node).forEach((key) => { if ((typeof node[key] === 'object') || (Array.isArray(node[key]) && node[key].length > 0)) { node[key] = deepCopyData(node[key]); } }); } else { node = data; } return node; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Json parse-stringify
own one

Fastest: N/A

Slowest: N/A

Latest run results:

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

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I'll break down the provided benchmark definition and explain what's being tested.

**Benchmark Definition**

The benchmark is comparing two approaches to create a copy of an object in JavaScript:

1. **JSON.parse(JSON.stringify(obj))**: This method uses the `JSON` object to parse and reconstruct the original object.
2. **Own implementation (deepCopyData)**: A custom function, `deepCopyData`, is used to recursively clone the object.

**Options Compared**

The two options are compared in terms of:

* Performance: The time it takes to execute each benchmark
* Memory usage: The amount of memory required by each benchmark

**Pros and Cons of Each Approach**

1. **JSON.parse(JSON.stringify(obj))**:
	* Pros:
		+ Easy to implement and understand
		+ Works well for simple objects with no nested references
	* Cons:
		+ Can be slow and inefficient for large or complex objects due to the overhead of parsing and reconstructing the object graph
		+ May not work correctly if the original object contains circular references or other special characters
2. **Own implementation (deepCopyData)**:
	* Pros:
		+ More efficient and scalable than JSON.parse(JSON.stringify(obj)) for large or complex objects
		+ Can handle circular references and other edge cases more accurately
	* Cons:
		+ Requires custom implementation and understanding of the algorithm
		+ May be slower to implement and test compared to JSON.parse(JSON.stringify(obj))

**Library: JSON**

The `JSON` object is used in the first approach (JSON.parse(JSON.stringify(obj))) to parse and reconstruct the original object. The `JSON` object provides a standardized way to represent JavaScript objects as text and vice versa.

**Special JS Feature or Syntax: None**

There are no special JavaScript features or syntaxes being tested in this benchmark.

**Other Alternatives**

Besides the two approaches mentioned, there are other methods for creating copies of objects in JavaScript, such as:

* Using `Object.assign()` with an empty object (e.g., `const obj2 = Object.assign({}, obj);`)
* Using `Array.prototype.slice()` and `JSON.parse(JSON.stringify(obj))` together (e.g., `const obj2 = JSON.parse(JSON.stringify(obj.slice()));`)
* Using a library like Lodash's `cloneDeep()` function

However, these alternatives are not being tested in this specific benchmark.

Related benchmarks:

Own vs jsonParse (version: 0)

Comparing performance of: Json parse-stringify vs own one

Created: 4 years ago by: Guest

Jump to the latest result

Json parse-stringify

own one

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):