Run results for: cache variabled

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0

Browser: Firefox 81

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
for	2188618.0 Ops/sec
for..of	2365150.8 Ops/sec
for+cache	2219497.8 Ops/sec
for+cache+cache	2146668.8 Ops/sec
for+cache+cache+cache	2680178.0 Ops/sec
for..of+cache	2364110.0 Ops/sec

Script Preparation code:

var arr = [{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0},{name: 'test', age: 12234, sex: 1},{name: '34423', age: 1324232, sex: 0},{name: '4234', age: 134, sex: 0},{name: '3244', age: 12, sex: 1},{name: '34324', age: 4321, sex: 0}]

Tests:

for
let buf = ''; for(let i=0; i<arr.length; i++){ buf+=arr[i].name+'/'+arr[i].sex+'-'+arr[i].age; }
for..of
let buf = ''; for(const v of arr){ buf+=v.name+'/'+v.sex+'-'+v.age; }
for+cache
let buf = ''; for(let i=0, len=arr.length; i<arr.length; i++){ buf+=arr[i].name+'/'+arr[i].sex+'-'+arr[i].age; }
for+cache+cache
let buf = ''; for(let i=0, len=arr.length; i<arr.length; i++){ const item = arr[i]; buf+=item.name+'/'+item.sex+'-'+item.age; }
for+cache+cache+cache
let buf = '', arra = arr; for(let i=0, len=arra.length; i<arra.length; i++){ const item = arra[i]; buf+=arra[i].name+'/'+arra[i].sex+'-'+arra[i].age; }
for..of+cache
let buf = '', arra = arr; for(const v of arra){ buf+=v.name+'/'+v.sex+'-'+v.age; }
foreach + cache+ arrow
let arrs = arr; let buf=''; arrs.forEach((v)=> { buf+=v.name+'/'+v.sex+'-'+v.age;})
foreach + cache+ func
let arrs = arr; let buf=''; arrs.forEach(function(v){ buf+=v.name+'/'+v.sex+'-'+v.age;})
foreach
let buf=''; arr.forEach(function(v){ buf+=v.name+'/'+v.sex+'-'+v.age;})

Run results for: cache variabled

for

for..of

for+cache

for+cache+cache

for+cache+cache+cache

for..of+cache

foreach + cache+ arrow

foreach + cache+ func

foreach