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for in
(version: 1)
Comparing performance of:
for in vs Object.keys vs Object.values vs Object.entries
Created:
7 months ago
by:
Registered User
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HTML Preparation code:
<!--your preparation HTML code goes here-->
Script Preparation code:
var obj =[...new Array(100000)].map(x=>({id:x,name:x}));
Tests:
for in
for (var key in obj) { const value = obj[key]; console.log(key, value); }
Object.keys
for (var key of Object.keys(obj)) { const value = obj[key]; console.log(key, value); }
Object.values
for (var value of Object.values(obj)) { console.log(value); }
Object.entries
for (var [key, value] of Object.entries(obj)) { console.log(key, value); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
for in
Object.keys
Object.values
Object.entries
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
7 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 Edg/140.0.0.0
Browser/OS:
Chrome 140 on Windows
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Test name
Executions per second
for in
2.2 Ops/sec
Object.keys
2.0 Ops/sec
Object.values
2.1 Ops/sec
Object.entries
1.4 Ops/sec
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