Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
slice vs substr vs substring remove first character
(version: 0)
Remove First Character
Comparing performance of:
slice vs substr vs substring
Created:
5 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var example = 'The quick brown fox jumps over the lazy dog.';
Tests:
slice
var result = example.slice(0,1)
substr
var result = example.substr(0,1)
substring
var result = example.substring(1)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
Fork
Test case name
Result
slice
substr
substring
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down what is being tested in the provided JSON benchmark. **Benchmark Definition** The test aims to compare the performance of three different methods for removing the first character from a string: `slice()`, `substr()`, and `substring()`. **Options Compared** * **slice()**: Returns a shallow copy of a portion of an array or a string, specified by its start index. * **substr()**: Returns a substring of another string with the specified number of leading bytes. * **substring()**: Returns a new string that consists of a subset of characters in a string. **Pros and Cons** * **slice()**: * Pros: Efficient for strings, as it doesn't create a new object or string. It returns a reference to the original string, so it's a good choice when you want to avoid creating an intermediate result. * Cons: Some browsers (e.g., Chrome) may be slow due to its nature of returning a reference. * **substr()**: * Pros: Also efficient for strings and returns a new string. However, some older versions of Internet Explorer had issues with `substr`. * Cons: Can cause problems when used in certain edge cases or if the input string is modified before the returned substring is used. **Other Considerations** * The test measures the number of executions per second (ExecutionsPerSecond) for each method, which indicates how many times each method was called within a second. * The `DevicePlatform` and `OperatingSystem` fields provide information about the environment in which the benchmark was run, which can be useful for identifying potential issues or differences between platforms. **Library Usage** There is no explicit library usage mentioned in the benchmark. However, it's worth noting that all three methods (`slice()`, `substr()`, and `substring()`) are native JavaScript functions, so they don't rely on any external libraries. **Special JS Feature/Syntax** None of these methods use a special or advanced JavaScript feature that is not commonly used. They are standard string manipulation techniques. **Other Alternatives** If you needed to remove the first character from a string but didn't want to use the `slice()`, `substr()`, and `substring()` methods, alternative approaches could include: * Using a regular expression: `example.replace(/^./g, '')` * Creating a new string by concatenating characters after the first one: `'The quick brown fox jumps over the lazy dog.' + example.slice(1)` * Using `split()` to split the string into an array and then indexing into it: `example.split('')` However, these alternatives may be less efficient or less readable than using the native methods. Overall, this benchmark provides a simple and straightforward test of three commonly used JavaScript methods for removing the first character from a string.
Related benchmarks:
slice vs substr vs substring (remove first and last char)
slice vs substring remove last char
Last char remove V1.0
slice vs substring (removing rightmost char)
Comments
Confirm delete:
Do you really want to delete benchmark?