Benchmark: for vs forEach - MeasureThat.net

Script Preparation code:

  var i,
      value,
      length,
      values = [],
      sum = 0,
      context = values;
  
  
  for (i = 0; i < 10000; i++) {
      values[i] = Math.random();
  }
  
  function add(val) {
      sum += val;
  }

Tests:

for cached length
length = values.length; for (i = 0; i < length; i++) { sum += values[i]; }
forEach
values.forEach( function(val) { sum += val; } );
forEach cached function
values.forEach( add );

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for cached length
forEach
forEach cached function

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 7 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:54.0) Gecko/20100101 Firefox/54.0

Browser/OS: Firefox 54 on Windows

View result in a separate tab

Test name	Executions per second
for cached length	322.6 Ops/sec
forEach	649.9 Ops/sec
forEach cached function	654.0 Ops/sec

for vs forEach (version: 0)

Comparing performance of: for cached length vs forEach vs forEach cached function

Created: 7 years ago by: Registered User

Jump to the latest result

for cached length

forEach

forEach cached function

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A