Benchmark: String concatenation vs element creation 2

Script Preparation code:

const data = [];

for (let i=0; i<100; i++) {
  const d = [
    Math.random().toString().slice(2, 7),
    Math.random().toString().slice(2, 10),
    Math.random() > 0.5 ? "Ms" : "Mr",
    Math.random().toString().slice(2, 8),
    Math.random().toString().slice(2, 4),
  ]

  data.push(d);
}

window.data = data;

Tests:

String concatenation
const container = document.createElement("div"); let temptableHolder = ` <table> <thead> <tr> <th>First Name</th> <th>Last Name</th> <th>Title</th> <th>ID</th> <th>Department</th> </tr> </thead> <tbody>`; for (const row of data) { temptableHolder += "<tr>"; for (const [k, v] of Object.entries(row)) { temptableHolder += `<td>${v}</td>` } temptableHolder += "</tr>"; } temptableHolder += '</tbody></table>'; container.innerHTML = temptableHolder;
createElement
const container = document.createElement("div"); const tableBody = document.createElement('tbody'); container.appendChild(tableBody); const head = document.createElement("thead"); tableBody.appendChild(head); const header = document.createElement("tr"); head.appendChild(header); for (s of ["First Name", "Last Name", "Title", "ID", "Department"]) { const cell = document.createElement("th"); cell.appendChild(document.createTextNode(s)); header.appendChild(cell); } for (const row of data) { const rowElement = document.createElement("tr"); tableBody.appendChild(rowElement); for (const [k, v] of Object.entries(row)) { const cell = document.createElement("td"); rowElement.appendChild(cell); cell.appendChild(document.createTextNode(v)); } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String concatenation
createElement

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's dive into the details of this benchmark.

**What is being tested?**

The provided JSON represents two test cases:

1. **String concatenation**: This test case compares the performance of string concatenation using the `+` operator versus a loop to build a table HTML string in JavaScript.
2. **createElement**: This test case compares the performance of creating an HTML element using `document.createElement()` versus building a table HTML string using string concatenation.

**Options compared**

For both test cases, the options being compared are:

* String concatenation using the `+` operator (e.g., `"Hello " + "World"` becomes `"Hello World"` )
* Building a table HTML string using a loop to concatenate strings
* Creating an HTML element using `document.createElement()`

**Pros and Cons**

**String Concatenation:**

Pros:

* Easy to understand and implement for developers familiar with the syntax.
* Can be more readable, especially for small strings.

Cons:

* Performance can suffer due to repeated string allocations and concatenations, which can lead to memory overhead.

**createElement:**

Pros:

* More efficient than string concatenation, as it avoids unnecessary string allocations and copying.
* Can reduce memory pressure, making it suitable for large datasets or performance-critical applications.

Cons:

* May require more lines of code to build the HTML structure, which can make it harder to read and maintain.

**Other Considerations**

* **DOM manipulation**: Creating and manipulating DOM elements can be expensive operations, especially when dealing with a large dataset.
* **Browser-specific behavior**: Different browsers may have varying performance characteristics when building and rendering DOM elements.
* **JavaScript engine optimization**: The JavaScript engine itself can optimize certain constructs or algorithms, which may affect the benchmark results.

**Library usage**

There is no library explicitly mentioned in the provided code. However, some libraries might be used indirectly through the use of modern JavaScript features or techniques (e.g., `Object.entries()`).

**Special JS feature/syntax**

The test case uses modern JavaScript syntax, such as:

* Arrow functions (`const rowElement = document.createElement(\"tr\") => { ... }`)
* Destructuring assignment (`for (const [k, v] of Object.entries(row))`)
* Template literals (`temptableHolder += ""`)

These features are widely supported in modern browsers and provide a more concise and expressive way to write code.

**Alternatives**

If you want to explore alternatives or similar benchmarks, here are some suggestions:

1. ** benchmark.js**: A popular benchmarking library for JavaScript.
2. **jsperf.com**: A online benchmarking platform specifically designed for JavaScript.
3. **jsBench**: A benchmarking tool that allows you to create and run custom JavaScript benchmarks.

Keep in mind that each of these alternatives might have different features, options, or configurations compared to the MeasureThat.net benchmarking platform.

Related benchmarks:

String concatenation vs element creation 2 (version: 1)

Comparing performance of: String concatenation vs createElement

Created: 3 years ago by: Registered User

Jump to the latest result

String concatenation

createElement

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):