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eval vs json parse only, no var declaration
(version: 0)
Evaluates eval vs json parse only, without any declaration of a variable.
Comparing performance of:
eval vs parse
Created:
2 years ago
by:
Guest
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Tests:
eval
eval('[1,2,3,4];');
parse
JSON.parse('[1,2,3,4]');
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
eval
parse
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 on MeasureThat.net. **What is tested?** The provided JSON represents a benchmark test between two approaches: using `eval()` and parsing a JSON string. The test case does not use any variable declarations, which simplifies the comparison. **Options compared:** Two options are compared: 1. **`eval()`**: Evaluates a string as JavaScript code. 2. **Parsing a JSON string**: Parses a JSON string into a JavaScript object without executing it as code. **Pros and Cons of each approach:** * `eval()`: + Pros: - Can execute complex expressions, including mathematical operations. - Can be used to dynamically load JavaScript code from strings. + Cons: - Can be slower due to the overhead of parsing and executing the string as code. - Can pose security risks if not properly validated, as it can execute arbitrary code. * Parsing a JSON string: + Pros: - Generally faster than `eval()`, especially for simple expressions. - Less prone to security risks, as it doesn't execute arbitrary code. + Cons: - Limited to mathematical operations and basic data types. - May require additional libraries or implementations for more complex JSON features. **Library usage:** There is no explicit library mentioned in the benchmark definition. However, the `JSON.parse()` method is a built-in JavaScript method that parses a JSON string into a JavaScript object. **Special JS feature or syntax:** None of the provided test cases use any special JavaScript features or syntax beyond basic arithmetic operations and parsing a JSON string. **Other alternatives:** If you wanted to compare other approaches, here are some alternative benchmarks: * Using `Function()` versus parsing a JSON string * Compiling a string into an expression tree using a library like E4X * Comparing the performance of different parsing libraries (e.g., JSON.parse() vs. jParse) * Measuring the performance of dynamic function calls versus static function calls Keep in mind that these alternative benchmarks would require additional modifications to the benchmark definition and test cases. For this specific benchmark, the comparison between `eval()` and parsing a JSON string is a good starting point for understanding the relative performance characteristics of these two approaches.
Related benchmarks:
JSON.parse() vs. eval()
eval vs json parse (working)
eval vs json parse only
eval vs json parse only, no var declaration (identical input)
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