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Run results for:
Float string optimization: parseFloat() vs regex, full version
To get a cleaned-up float number with a limited number of digits of precision, which is faster: parsefloat() or a regular expression?
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<iframe src="https://measurethat.net/Embed?id=554730" 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/128.0.0.0 Safari/537.36
Browser:
Chrome 128
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
regex
3.5M/s
parseFloat()
1.7M/s
View exact numbers
Test name
Executions per second
✓
regex
3,463,379 Ops/sec
parseFloat()
1,703,417 Ops/sec
Tests:
parseFloat()
var string = parseFloat((3/2).toFixed(4)).toString();
regex
var string = (3/2).toFixed(4).replace('^[+-]?([0-9]*[.])?[0-9]+$', '');