Run results for: testing the performance of try catch vs check for undefined

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

Browser: Chrome 66

Operating system: Mac OS X 10.12.6

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
using try catch block	3922471.5 Ops/sec
using check	110325.4 Ops/sec

Tests:

using try catch block
const obj = { obj : { obj: { obj: { obj: 1 } } } } for (let i=0; i<99; i++) { try { const val = obj.obj.obj.obj.obj; } catch (e) { //do nothing } }
using check
const obj = { obj : { obj: { obj: { obj: 1 } } } } const getNested = obj => (path) => { const arr = path.split('.'); return arr.reduce( (root, key) => ((root && root[key] !== 'undefined') ? root[key] : undefined), obj, ); }; for (let i=0; i<99; i++) { getNested(obj)('obj.obj.obj.obj'); }