Benchmark: test xml extract

Script Preparation code:

var testString = `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ds xmlns="http://tempuri.org/ds.xsd"> <xs:schema id="ds" targetNamespace="http://tempuri.org/ds.xsd" xmlns:mstns="http://tempuri.org/ds.xsd" xmlns="http://tempuri.org/ds.xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" attributeFormDefault="qualified" elementFormDefault="qualified">    <xs:element name="ds" msdata:IsDataSet="true">      <xs:complexType>        <xs:choice maxOccurs="unbounded">          <xs:element name="tert">            <xs:complexType>              <xs:sequence>                <xs:element name="cod_fiscal" type="xs:int" minOccurs="0" />                <xs:element name="reg_comert" type="xs:string" minOccurs="0" />                <xs:element name="denumire" type="xs:string" minOccurs="0" />                <xs:element name="adresa" type="xs:string" minOccurs="0" />                <xs:element name="judet" type="xs:string" minOccurs="0" />                <xs:element name="telefon" type="xs:string" minOccurs="0" />                <xs:element name="stare" type="xs:string" minOccurs="0" />                <xs:element name="is_tva" type="xs:int" minOccurs="0" />                <xs:element name="data_tva" type="xs:date" minOccurs="0" />                <xs:element name="data_doc" type="xs:date" minOccurs="0" />                <xs:element name="data_tvai" type="xs:date" minOccurs="0" />                <xs:element name="data_sftvai" type="xs:date" minOccurs="0" />                <xs:element name="data_tvas" type="xs:date" minOccurs="0" />                <xs:element name="data_sftvas" type="xs:date" minOccurs="0" />                <xs:element name="bitError" type="xs:int" minOccurs="0" />                <xs:element name="nr_doc" type="xs:int" minOccurs="0" />                <xs:element name="text" type="xs:string" minOccurs="0" />              </xs:sequence>            </xs:complexType>          </xs:element>        </xs:choice>      </xs:complexType>    </xs:element>  </xs:schema>
<tert>
<cod_fiscal>12345</cod_fiscal>
<reg_comert>J11/222/333</reg_comert>
<denumire>AAAAAAAAAAA</denumire>
<adresa>BBBBBBBBBBBBBBBB</adresa>
<judet>CCCCCCCCCCCC</judet>
<telefon>DDDDDDDDDD</telefon>
<stare></stare>
<is_tva>1</is_tva>
<data_tva>2016-08-24</data_tva>
<data_doc>2016-12-12</data_doc>
<data_tvai>2016-08-24</data_tvai>
<data_sftvai>2012-01-01</data_sftvai>
<data_tvas>2012-01-01</data_tvas>
<data_sftvas>2012-01-01</data_sftvas>
<bitError>0</bitError>
<nr_doc>0</nr_doc>
<text></text>
</tert>
</ds>`;
function getStringBetween(str, start, end) {
    const result = str.match(new RegExp(start + "(.*)" + end));
    return result[1];
}

Tests:

reg
getStringBetween(testString, '<adresa>', '</adresa>')
substring indexOf
testString.substring( testString.lastIndexOf("<adresa>") + 8, testString.lastIndexOf("</adresa>") )

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
reg
substring indexOf

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Slowest: N/A

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

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Let's dive into the provided benchmark definition and explain what's being tested.

**Benchmark Definition**

The benchmark is created using JSON data, which includes:

* `Script Preparation Code`: This contains a JavaScript string (`testString`) that represents an XML document with various elements, including `<adresa>`, which is the element we're interested in extracting.
* `Html Preparation Code`: This field is empty, indicating that no HTML markup is used for this benchmark.

**Individual Test Cases**

The benchmark includes two test cases:

1. **`reg`**: The benchmark definition uses the `getStringBetween` function to extract the string between `<adresa>` and `</adresa>`. In other words, it extracts the value of the `<adresa>` element.
2. **`substring indexOf`**: This benchmark uses the `substring` method with `lastIndexOf` to extract the same string as in the previous test case.

**Library**

The `getStringBetween` function is using a regular expression (RegExp) to extract the desired substring. The library used here is not explicitly mentioned, but it's likely a built-in JavaScript function or a simple implementation of the RegExp API.

**Special JS Features/Syntax**

Neither of these test cases uses any special JavaScript features or syntax that's specific to a particular browser or version.

Now, let's discuss the options being compared:

* **`getStringBetween` vs `substring indexOf`**: Both methods aim to extract the same string value, but they use different approaches. `getStringBetween` is more explicit and readable, while `substring indexOf` relies on a more aggressive algorithm to find the indices of `<adresa>` and `</adresa>`. The choice between these two might depend on performance considerations or personal preference.
* **Browser vs Browser**: The benchmark compares the execution times of the two test cases across different browsers (Chrome 102). This allows users to compare how the same implementation performs in various browsers.

**Pros and Cons**

* `getStringBetween`:
	+ Pros: More readable, explicit code that clearly extracts the desired substring.
	+ Cons: Might be slower due to the additional complexity of regular expressions.
* `substring indexOf`:
	+ Pros: Aggressive algorithm can potentially lead to faster performance, especially for large strings.
	+ Cons: Code might be less readable and more prone to errors.

**Other Considerations**

When choosing between these two methods, consider factors like:

* Readability: If you need to understand what's happening in the code, `getStringBetween` is a better choice.
* Performance: For very large strings or performance-critical applications, `substring indexOf` might be faster due to its more efficient algorithm.

Other alternatives to consider for similar use cases include using `String.prototype.replace()` or regular expressions with capturing groups. However, these approaches can have different trade-offs in terms of readability and performance.

I hope this explanation helps you understand the benchmark and the options being compared!

Related benchmarks:

test xml extract (version: 0)

Comparing performance of: reg vs substring indexOf

Created: 3 years ago by: Guest

Jump to the latest result

reg

substring indexOf

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):