Benchmark: for-in to hasOwnProperty vs Object.keys, then loop

Script Preparation code:

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  var i;
  var key;
  var keys;
  var l;
  var value;

Tests:

for-in, then hasOwnProperty
for ( key in obj ) { if (obj.hasOwnProperty(key ) ) { value = obj[key]; } }
Object.keys, then loop
keys = Object.keys( obj ); i = keys.length; while( i--) { value = obj[ keys[ i ] ]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for-in, then hasOwnProperty
Object.keys, then loop

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0

Browser/OS: Firefox 63 on Windows 8.1

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Test name	Executions per second
for-in, then hasOwnProperty	11147.4 Ops/sec
Object.keys, then loop	7724.3 Ops/sec

for-in to hasOwnProperty vs Object.keys, then loop (version: 0)

Comparing performance of: for-in, then hasOwnProperty vs Object.keys, then loop

Created: 5 years ago by: Guest

Jump to the latest result

for-in, then hasOwnProperty

Object.keys, then loop

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A