Benchmark: lookup table vs if statement

Tests:

Lookup
Object.prototype.add = function (){ const object = Object.assign(this); const keys = Object.keys(object); let index = 0; const loopup = { 'object': function(arr){ const array = Object.values(arr); for(let o = 0, l = array.length; o < l; o++){ if(typeof(array[o]) === 'number'){ object[keys[index]] += array[o]; index++; } if(index === keys.length) break; }; }, 'number': function(number){ object[keys[index]] += number; index++; } } for(let i = 0, length = arguments.length; i < length; i++) { loopup[typeof(arguments[i])](arguments[i]) if(index === keys.length) break; } return object; }; const AddToObject = {"x": 121, "y": 122, "z": 500, p: 500, l: 69, j: 420}.add(900000,{x:6900,z:9000}, [5000000,123,123]);
if else
Object.prototype.add = function (){ const object = Object.assign(this); const keys = Object.keys(object); let index = 0; for(let i = 0, length = arguments.length; i < length; i++) { const type = typeof(arguments[i]) if(type === 'object'){ const array = Object.values(arguments[i]); for(let o = 0, l = array.length; o < l; o++){ if(typeof(array[o]) === 'number'){ object[keys[index]] += array[o]; index++; } if(index === keys.length) break; }; } else if(type === 'number') { object[keys[index]] += arguments[i]; index++; } if(index === keys.length) break; } return object; }; const AddToObject = {"x": 121, "y": 122, "z": 500, p: 500, l: 69, j: 420}.add(900000,{x:6900,z:9000}, [5000000,123,123]);

Rendered benchmark preparation results:

Previous results

Test case name	Result
Lookup
if else

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0

Browser/OS: Firefox 138 on Windows

Test name	Executions per second
Lookup	4586976.5 Ops/sec
if else	5665081.0 Ops/sec

Related benchmarks:

lookup table vs if statement (version: 0)