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Optional Chaining versus _.get lodash without badObj
(version: 0)
Comparing performance of:
Optional Chaining vs Lodash
Created:
4 years ago
by:
Guest
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Script Preparation code:
var obj = {a: {b: {c: {d: 1}}}}
Tests:
Optional Chaining
(obj.a == null ? undefined : obj.a.b == null ? undefined : obj.a.b.c == null ? undefined : obj.a.b.c.d) || 2
Lodash
_.get(obj, "a.b.c.d", 2)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Optional Chaining
Lodash
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**What is being tested:** MeasureThat.net is testing two different approaches to access nested properties in an object: 1. **Optional Chaining**: This approach uses the nullish coalescing operator (`??`) and chaining comparison operators (`==`, `===`) to safely navigate through the object's structure. 2. **Lodash's _.get() method**: This is a utility function from the Lodash library that provides a way to safely access nested properties in an object. **Options compared:** The benchmark compares two options: * Optional Chaining * Lodash's _.get() method **Pros and Cons of each approach:** 1. **Optional Chaining**: * Pros: + Concise and expressive syntax + Efficient, as it avoids unnecessary comparisons + Works with modern JavaScript engines (e.g., V8) * Cons: + May not be supported in older browsers or JavaScript versions + Requires understanding of the nullish coalescing operator (`??`) 2. **Lodash's _.get() method**: * Pros: + Wide browser support, including older versions + Provides a clear and concise way to access nested properties + Well-documented and widely used library * Cons: + Requires including the Lodash library in your project + May introduce additional dependencies **Library:** Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as string manipulation, array operations, and more. The `_.get()` method is specifically designed to safely access nested properties in an object. **Special JS feature or syntax:** The benchmark uses the nullish coalescing operator (`??`), which was introduced in ECMAScript 2020 (ES2020). This operator allows you to safely navigate through objects, avoiding null pointer exceptions. If you're not familiar with this operator, it's a new addition to modern JavaScript and is supported by most modern browsers and JavaScript engines. **Other alternatives:** If you prefer not to use Optional Chaining or Lodash's _.get() method, you can consider the following alternatives: * **Brackets notation**: This approach uses brackets (`[]`) to access nested properties. For example, `obj['a']['b']['c']`. * **Dot notation with null checks**: This approach uses dot notation (`.`) and null checks (`&&`) to access nested properties. For example, `(obj.a && obj.a.b && obj.a.b.c)`. However, these alternatives may not be as concise or efficient as Optional Chaining or Lodash's _.get() method.
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