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eval vs json parse only, no var declaration (long identical input)
(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","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4"]');
parse
JSON.parse('["1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","1","2","3","4","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. **Benchmark Definition** The provided JSON represents a benchmark test that compares the performance of `eval` and `JSON.parse` functions without declaring any variables. The benchmark is designed to measure the execution speed of these two functions when given a long, identical input string. **Options Compared** Two options are compared in this benchmark: 1. **`eval`**: Evaluates the input string using the `eval()` function. 2. **`JSON.parse`**: Parses the input string as JSON data using the `JSON.parse()` method. **Pros and Cons of Each Approach** * **`eval`**: + Pros: Can execute complex JavaScript expressions, flexible, and easy to use. + Cons: Can pose security risks if used with untrusted input, performance overhead due to parsing and executing the expression, and can lead to performance degradation due to the creation of new scopes. * **`JSON.parse`**: + Pros: More secure than `eval`, as it only parses JSON data without executing any code, faster execution time due to reduced overhead, and can handle large input strings more efficiently. + Cons: Limited flexibility compared to `eval`, may not work with non-JSON data. **Library Used** None is explicitly mentioned in the benchmark definition. However, `JSON.parse()` relies on the built-in JavaScript `JSON` object, which is a standard library provided by most modern browsers and Node.js implementations. **Special JS Features or Syntax** The benchmark uses a feature that is specific to the `eval` function: **string interpolation**. The input string contains quotes and values separated by commas, which allows for complex expressions to be evaluated using the `eval()` function. In summary, this benchmark aims to compare the performance of `eval` and `JSON.parse` functions when executing identical long input strings without declaring variables. The results will help determine which approach is faster and more efficient in terms of execution time. **Other Alternatives** If you're interested in exploring other alternatives, consider the following: * **Function expressions**: Instead of using `eval`, you could use function expressions to achieve similar results. * **Native JSON parsing libraries**: If you need to parse large amounts of JSON data, you may want to explore native JSON parsing libraries like UglifyJS or json5-parser. Keep in mind that the performance differences between these alternatives may be negligible or dependent on specific use cases and input sizes.
Related benchmarks:
JSON.parse() vs. eval()
eval vs json parse (working)
eval vs json parse only
eval vs json parse only, no var declaration
eval vs json parse only, no var declaration (identical input)
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