Run results for: lookup table vs if statement

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.61 Safari/537.36

Browser: Chrome 102

Operating system: Windows 7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Lookup	552047.3 Ops/sec
if else	616419.3 Ops/sec

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]);