Run results for: Optional Chaining plus Nullish Coalescing versus _.get lodash

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148/JueJinAPP

Browser: Mobile Safari 18

Operating system: iOS 18.1

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

Optional Chaining

5.4M/s

Lodash

3.7M/s

View exact numbers

Test name	Executions per second
✓ Optional Chaining	5,417,948 Ops/sec
Lodash	3,748,979 Ops/sec

Script Preparation code:

var obj = {a: {b: {c: {d: 1}}}}
var badObj = {}

Tests:

Optional Chaining
var c = obj.a == null ? undefined : obj.a.b == null ? undefined : obj.a.b.c == null ? undefined : obj.a.b.c.d c == null ? 2 : c var d = badObj.a == null ? undefined : badObj.a.b == null ? undefined : badObj.a.b.c == null ? undefined : badObj.a.b.c.d d == null ? 2 : d
Lodash
_.get(obj, "a.b.c.d", 2) _.get(badObj, "a.b.c.d", 2)