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Run results for:
RegExp constructor vs literal
Testing performance when using a new RegExp object vs a literal regex
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0
Browser:
Firefox 121
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
new RegExp()
12710581.0 Ops/sec
Literal
12639428.0 Ops/sec
Script Preparation code:
var reConstructor = new RegExp('^[0-9a-fA-F]{24}$') var reLiteral = /^[0-9a-fA-F]{24}$/
Tests:
new RegExp()
reConstructor.test('132abc67219f019afe12901a')
Literal
reLiteral.test('132abc67219f019afe12901a')