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Run results for:
Array isArray vs typeof with string
Is typeof or isArray faster for detecting if something is an array or strings or a single string
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<iframe src="https://measurethat.net/Embed?id=563107" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Browser:
Chrome 130
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
typeof
2.5M/s
isArray
1.4M/s
View exact numbers
Test name
Executions per second
✓
typeof
2,535,554 Ops/sec
isArray
1,446,964 Ops/sec
Script Preparation code:
var test = "hello"; var test2 = ['h','e','l','l','o'] var c;
Tests:
typeof
if (typeof test === 'string') { c++; } if (typeof test2 === 'string') { c++; }
isArray
if (Array.isArray(test)) { c++; } if (Array.isArray(test2)) { c++; }