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.startsWith(x, index) vs indexOf(x, index) === index
(version: 2)
Comparing performance of:
indexOf with offset vs startsWith with offset
Created:
9 months ago
by:
Registered User
Go to the latest result
Script Preparation code:
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"},{"type":2,"pos":{"line":44,"column":32,"srcFile":"multiline-brackets.mcb"}},{"type":10,"pos":{"line":44,"column":32,"srcFile":"multiline-brackets.mcb"},"content":" score: "},{"type":2,"pos":{"line":44,"column":41,"srcFile":"multiline-brackets.mcb"}},{"type":10,"pos":{"line":44,"column":41,"srcFile":"multiline-brackets.mcb"},"content":" name: '@s', objective: astar.node.h "},{"type":3,"pos":{"line":44,"column":79,"srcFile":"multiline-brackets.mcb"}},{"type":3,"pos":{"line":44,"column":80,"srcFile":"multiline-brackets.mcb"}},{"type":10,"pos":{"line":44,"column":80,"srcFile":"multiline-brackets.mcb"},"content":","},{"type":8,"pos":{"line":44,"column":82,"srcFile":"multiline-brackets.mcb"}},{"type":2,"pos":{"line":45,"column":3,"srcFile":"multiline-brackets.mcb"}},{"type":10,"pos":{"line":45,"column":3,"srcFile":"multiline-brackets.mcb"},"content":" text: ' ParentID=', color: aqua "},{"type":3,"pos":{"line":45,"column":37,"srcFile":"multiline-brackets.mcb"}},{"type":10,"pos":{"line":45,"column":37,"srcFile":"multiline-brackets.mcb"},"content":", "},{"type":2,"pos":{"line":45,"column":40,"srcFile":"multiline-brackets.mcb"}},{"type":10,"pos":{"line":45,"column":40,"srcFile":"multiline-brackets.mcb"},"content":" score: "},{"type":2,"pos":{"line":45,"column":49,"srcFile":"multiline-brackets.mcb"}},{"type":10,"pos":{"line":45,"column":49,"srcFile":"multiline-brackets.mcb"},"content":" name: '@s', objective: astar.node.parent_id "},{"type":3,"pos":{"line":45,"column":95,"srcFile":"multiline-brackets.mcb"}},{"type":3,"pos":{"line":45,"column":96,"srcFile":"multiline-brackets.mcb"}},{"type":8,"pos":{"line":45,"column":97,"srcFile":"multiline-brackets.mcb"}},{"type":5,"pos":{"line":46,"column":2,"srcFile":"multiline-brackets.mcb"}},{"type":8,"pos":{"line":46,"column":3,"srcFile":"multiline-brackets.mcb"}},{"type":3,"pos":{"line":47,"column":1,"srcFile":"multiline-brackets.mcb"}},{"type":8,"pos":{"line":47,"column":2,"srcFile":"multiline-brackets.mcb"}}]`; const searchString = `{"type":8,"pos":{"line":47,"column":2,"srcFile":"multiline-brackets.mcb"}}`; const searchIndex = 28741;
Tests:
indexOf with offset
testString.indexOf(searchString, searchIndex) === searchIndex;
startsWith with offset
testString.startsWith(searchString, searchIndex);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
indexOf with offset
startsWith with offset
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
9 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36
Browser/OS:
Chrome 140 on Windows
View result in a separate tab
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=619807" width="100%" height="500px"></iframe>
indexOf with offset
126.1M/s
startsWith with offset
11.3M/s
View exact numbers
Test name
Executions per second
✓
indexOf with offset
126,062,008 Ops/sec
startsWith with offset
11,261,010 Ops/sec
Related benchmarks
index vs lastindexof
string.charCodeAt(index) vs string[index].charCodeAt() vs +string[index]
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