Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
boolean() vs != null
(version: 0)
Comparing performance of:
case 1 vs case 2 vs case 3 vs case 4 vs case 5 vs case 6
Created:
one year ago
by:
Guest
Jump to the latest result
Tests:
case 1
Boolean(undefined)
case 2
Boolean(0)
case 3
Boolean(1)
case 4
undefined != null
case 5
0 != null
case 6
1 != null
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (6)
Previous results
Fork
Test case name
Result
case 1
case 2
case 3
case 4
case 5
case 6
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Safari/605.1.15
Browser/OS:
Safari 17 on Linux
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=534086" width="100%" height="500px"></iframe>
Test name
Executions per second
case 1
621900.2 Ops/sec
case 2
1284369.9 Ops/sec
case 3
1323873.4 Ops/sec
case 4
924061.6 Ops/sec
case 5
52864876.0 Ops/sec
case 6
58931664.0 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Benchmark Overview** The provided benchmark, hosted on MeasureThat.net, compares the performance of two approaches to check if a value is not null or undefined in JavaScript. **Approach 1: `Boolean(undefined)` and related tests** In this approach, the `Boolean()` function is used to convert an undefined value to a boolean. If the result is true, it means the original value was not null or undefined. The individual test cases demonstrate this by creating variables with different values (undefined, 0, 1) and then checking if `Boolean(undefined)` returns false for each case. This effectively checks if the original value was null or undefined. **Approach 2: `!= null` and related tests** In this approach, the `!= null` operator is used to check if a value is not equal to null. The individual test cases demonstrate this by creating variables with different values (undefined, 0, 1) and then checking if `x != null` returns true for each case. This effectively checks if the original value was not null or undefined. **Comparison of Approaches** Both approaches have their pros and cons: * **Pros:** + Both approaches are concise and easy to understand. + They provide a clear indication of whether a value is null or undefined. * **Cons:** + The `Boolean()` approach can be less efficient due to the overhead of converting the value to a boolean. However, this difference is likely negligible in most cases. + The `!= null` approach is more straightforward and easier to read. **Library: None** There are no libraries used in these benchmark tests. They rely solely on native JavaScript functionality. **Special JS Features/Syntax: None** There are no special JavaScript features or syntax used in these test cases. They only utilize basic arithmetic operations and conditional statements. **Other Alternatives** If you need to check if a value is not null or undefined, other alternatives could include: * `typeof x !== 'undefined'` * `x === true` (assuming the value will be either true or false) * Using a library like Lodash's `isNil()` function However, these alternatives may have different performance characteristics and may not be as concise as the original approaches.
Related benchmarks:
Negation vs normal boolean value
Boolean vs !!4
filter Boolean vs !!
Ternary operator vs String Interpolation
Boolean vs !! vs length
Comments
Confirm delete:
Do you really want to delete benchmark?