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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:125.0) Gecko/20100101 Firefox/125.0

Browser: Firefox 125

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

using try catch block

10.1M/s

using check

60K/s

View exact numbers

Test name	Executions per second
✓ using try catch block	10,146,887 Ops/sec
using check	59,777 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'); }