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String vs object manipulation for editing DOM
(version: 1)
Comparing performance of:
String manipulation vs Object manipulation
Created:
3 years ago
by:
Registered User
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Tests:
String manipulation
const root = document.createElement("div"); for (let i=0; i<10; i++) { let spans = []; for (let j=0; j<100; j++) { spans.push(`<span>hello ${i}:${j}</span>`); } const d = `<div>${spans.join("\n")}</div>` root.innerHTML += d; }
Object manipulation
const root = document.createElement("div"); for (let i=0; i<10; i++) { const d = document.createElement("div"); root.append(d); for (let j=0; j<100; j++) { const s = document.createElement("span"); d.append(s); s.innerText = `hello ${i}:${j}`; } }
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Suite status:
<idle, ready to run>
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Test case name
Result
String manipulation
Object manipulation
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks! MeasuresThat.net is a website that allows users to create and run JavaScript microbenchmarks, providing insights into how different approaches affect performance. **Benchmark Definition** The provided JSON represents a benchmark definition for two test cases: 1. **String manipulation**: This test case creates a series of `<span>` elements with text content and appends them to a parent `div` element using the `innerHTML` property. 2. **Object manipulation**: This test case creates a similar structure, but instead of using `innerHTML`, it uses the `append()` method to add child elements to the parent `div`. **Options Compared** The benchmark compares two approaches: 1. **String manipulation (using `innerHTML`)** * Pros: + Easy to implement and understand. + Fast and efficient for simple text concatenation. * Cons: + Can be slow for large amounts of data, as it involves creating a new DOM element and manipulating its contents. 2. **Object manipulation (using `append()`)** The use of the `append()` method is a common pattern in modern JavaScript development, especially when working with HTML documents. **Pros and Cons** 1. Object manipulation using `append()` * Pros: + Can be faster than string manipulation for large datasets, as it avoids creating new DOM elements. + Easier to manage complex DOM structures. * Cons: + May require more JavaScript code to implement. + Can lead to memory leaks if not handled properly. **Library and Purpose** In both test cases, the `document` object is used to interact with the HTML document. The `document.createElement()` method creates a new DOM element, while `append()` adds a child element to an existing parent element. No specific libraries are mentioned in the provided benchmark definition. **Special JS Features or Syntax** None of the benchmark test cases use any special JavaScript features or syntax beyond standard ECMAScript functionality. **Other Alternatives** If you're interested in exploring other approaches, here are some alternatives: * **Template literals**: Instead of concatenating strings using `+`, you can use template literals (`\`${expression}\``) to create a new string. * **DOM manipulation libraries**: Libraries like jQuery or React can provide optimized DOM manipulation APIs that might be faster than the native `append()` method. * **String replacement patterns**: Regular expressions (regex) can be used to replace substrings in strings, which might be more efficient for certain use cases. Keep in mind that these alternatives might not be relevant to this specific benchmark and may introduce additional complexity or dependencies.
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